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Arsenic (As) | AMERICAN ELEMENTS ®

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src="images_graphics/element-bohr-models/arsenic-bohr-model.jpg" alt="Arsenic Bohr" width="200" height="200" class="image-left"> <p>The discovery of arsenic is generally attributed to Saint Albertus Magnus, sometimes known as Albert the Great, as there are records of the bishop, scholar, and alchemist producing elemental arsenic in 1250 AD. However, arsenic <a href="https://www-americanelements-com.translate.goog/chemicals.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">compounds</a> have been known since antiquity, and earlier alchemists may have accomplished this feat as well. Whereas many more recently discovered elements have names with Greek roots, arsenic’s roots are older, as the Greek <em>arsenikon</em> was derived from Syriac and Persian words for “yellow orpiment”, which is a naturally occurring <a href="https://www-americanelements-com.translate.goog/arsenic-iii-sulfide-1303-33-9?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">arsenic(III) sulfide</a> mineral. The name came into Latin as arsenicum, and to old French as arsenic, which was adopted as the English word for the element.</p> <p>Arsenic’s cultural history is curiously paradoxical, as it has been used as both medicine and poison for centuries. Hippocrates prescribed orpiment for ulcers, and ancient Chinese medicine used arsenic compounds to treat a variety of ailments. In the 18th century, Thomas Fowler made popular the patent medicine “Fowler’s solution”, a liquid formulation of <a href="https://www-americanelements-com.translate.goog/kk.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">potassium</a> arsenite that was sold as a remedy for complaints as diverse as asthma, eczema, and malaria. At the same time, arsenic compounds were well known as poisons that they were used to kill pests and people in medieval Europe. The French knew <a href="https://www-americanelements-com.translate.goog/arsenic-oxide-1327-53-3?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">arsenic trioxide</a>, an odorless compound that easily mixed into food or drink, as “poudre de succession”--”Inheritance powder”, because it was used so commonly used in homicides.</p> <p>Intentional arsenic poisonings became less common after a reliable method for detecting arsenic in a diseased person, the Marsh test, was introduced in 1836, but many modern uses of the element continued to take advantage of its toxicity. A variety of arsenic compounds have been used as pesticides and herbicides and in wood preservatives, though the toxicity of such products to the humans working with them has led to their replacement by safer alternatives for some applications. The deadly properties of arsenic have even been weaponized--a number of chemical agents used in the First World War were arsenic compounds, and Agent Blue, one of the “rainbow herbicides” used in the Vietnam war, was a potent arsenic herbicide.</p> <p>Arsenic-based <a href="https://www-americanelements-com.translate.goog/Bio-Medical.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">medical treatments</a> also have modern counterparts. An arsenic containing drug called Salvarsan was developed as a syphilis treatment in the early 20th century, and remained in use until penicillin became available in the 1940s. The arsenic containing drug Melarsoprol is still sometimes used as a treatment for late stages of African trypanosomiasis--known colloquially as African sleeping sickness--despite significant side effects related to arsenic toxicity. Arsenic is also used in the treatment of several cancers, particularly in recurrences of acute promyelocytic leukemia following first line treatments.</p> <p>A third historical use for arsenic was in metal <a href="https://www-americanelements-com.translate.goog/alloys.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">alloys</a>. Early bronze was made from arsenic and <a href="https://www-americanelements-com.translate.goog/cu.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">copper</a>; it was only later that <a href="https://www-americanelements-com.translate.goog/sn.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">tin</a> replaced arsenic. <a href="https://www-americanelements-com.translate.goog/copper-zinc-alloy?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Brass</a> even today sometimes contain arsenic, which lessens corrosive loss of <a href="https://www-americanelements-com.translate.goog/zn.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">zinc</a> from the <a href="https://www-americanelements-com.translate.goog/copper-zinc-alloy?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">copper-zinc alloy</a>. The primary modern use of arsenic in alloys, however, is in lead alloys. The addition of arsenic makes <a href="https://www-americanelements-com.translate.goog/pb.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">lead</a>, a soft metal, significantly harder, and such alloys are used in standard lead-acid car <a href="https://www-americanelements-com.translate.goog/Battery-Technology.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">batteries</a>.</p> <p>Other modern uses of arsenic have no historical precedent; a prime example is arsenic’s use in semiconductors. Arsenic is a component of many <a href="https://www-americanelements-com.translate.goog/semiconductors.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">III-V type semiconductors</a> as well as semiconducting compounds with more complex formulations. The most common III-V semiconductor is <a href="https://www-americanelements-com.translate.goog/gallium-arsenide-1303-00-0?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">gallium arsenide</a>. Gallium arsenide was developed in the 1960s as a semiconductor with somewhat different electrical properties than the more common <a href="https://www-americanelements-com.translate.goog/si.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">silicon</a>, and that is more suited than silicon to some applications. Notably, gallium arsenide is a direct band gap semiconductor, which means that it can both absorb and emit light with high efficiency. This lends it to use in <a href="https://www-americanelements-com.translate.goog/lighting.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">LEDs</a> and lasers. Additionally, extremely thin layers of gallium arsenide can be used to effectively absorb all the photons from incident sunlight, as opposed to the thick layers of silicon required for the same task. This allows for the creation of one type of <a href="https://www-americanelements-com.translate.goog/solar-energy-materials.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">thin-film photovoltaic cell</a>. GaAs-based semiconductor devices also exhibit less noise than those produced from silicon, and are thus favored in many telecommunications applications. The other III-V arsenic semiconductors have similar uses to gallium arsenide, and semiconductors with more complex formulations are generally used in settings where the ability to tune the material’s band gap through adjustments to the precise molecular composition are desirable.</p> <p>In nature, arsenic is most commonly found in minerals in combination with <a href="https://www-americanelements-com.translate.goog/sulfur.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">sulfur</a> and sometimes <a href="https://www-americanelements-com.translate.goog/fe.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">iron</a>, <a href="https://www-americanelements-com.translate.goog/ni.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">nickel</a>, or <a href="https://www-americanelements-com.translate.goog/cu.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">copper</a>. The two forms of <a href="https://www-americanelements-com.translate.goog/arsenic-iii-sulfide-1303-33-9?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">arsenic(III) sulfide</a>, realgar and orpiment, were often used as sources of arsenic in antiquity. The most common form of arsenic used in industry is <a href="https://www-americanelements-com.translate.goog/arsenic-oxide-1327-53-3?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">arsenic trioxide</a>, which may be produced by roasting any of these minerals in air. Roasting the same minerals without oxygen present will produce <a href="https://www-americanelements-com.translate.goog/arsenic-metal-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">metallic arsenic</a>. Arsenic is rarely harvested directly, but rather produced as a side product of the mining and purification of other metal ores.</p> </div> <div class="tab-pane active" id="products"> <h2>Products</h2> <div class="panel-group expanding" id="accordion"> <div class="panel panel-products"> <div class="panel-heading activate-panel active-panel" data-toggle="collapse" data-target="#featured-products"> <span class="panel-title">Featured High Purity Products</span><span class="Arrowhead-Down-24 dropdown-icon"></span> </div> <div id="featured-products" class="panel-body collapse in row"> <ul class="grid grid3 no-dot"> <li class="product"><a href="https://www-americanelements-com.translate.goog/7n5-99999995-ulta-high-purity-arsenic-ingot-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">(7N5) 99.999995% Arsenic Ingot</a></li> </ul> </div> </div> <div class="panel panel-products"> <div class="panel-heading activate-panel" data-toggle="collapse" data-target="#compound-products"> <span 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href="https://www-americanelements-com.translate.goog/zinc-arsenate-13464-44-3?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Zinc Arsenate</a></li> </ul> </div> </div> <div class="panel panel-products"> <div class="panel-heading activate-panel" data-toggle="collapse" data-target="#metallic-products"> <span class="panel-title">Metallic Forms</span><span class="Arrowhead-Down-24 dropdown-icon"></span> </div> <div id="metallic-products" class="panel-body collapse row"> <ul class="grid grid3 no-dot"> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-balls-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Balls</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-band-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Bands</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-bars-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Bar</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-chunk-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Chunk</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-coil-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Coil</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-concentrate-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Concentrate</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-cylinder-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Cylinder</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-disc-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Disc</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-flake-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Flake</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-flange-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Flanges</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-foil-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Foil</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-granules-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Granules</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-ingots-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Ingot</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-lump-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Lump</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-mesh-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Mesh</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-metal-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Metal</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-microfoil-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Microfoil</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-microleaf-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Microleaf</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-parts-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Parts</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-pellets-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Pellets </a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-pieces-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Pieces </a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-plate-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Plate</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-powder-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Powder </a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-puck-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Pucks </a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-ring-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Rings</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-rod-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Rod</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-samples-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Samples</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-shavings-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Shaving</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-sheet-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Sheets</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-shot-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Shot</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-single-crystal-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Single Crystal</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-sleeves-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Sleeves</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-slugs-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Slugs</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-specimen-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Specimens</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-sphere-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Spheres</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-sponges-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Sponges</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-spring-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Spring</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-strip-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Strip</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-tape-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Tape</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-tube-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Tube </a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-wafer-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Wafer</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-wire-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Wire </a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/black-arsenic-crystal-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Black Arsenic Crystal</a></li> </ul> </div> </div> <div class="panel panel-products"> <div class="panel-heading activate-panel" data-toggle="collapse" data-target="#alloy-products"> <span class="panel-title">Alloys</span><span class="Arrowhead-Down-24 dropdown-icon"></span> </div> <div id="alloy-products" class="panel-body collapse row"> <ul class="grid grid3 no-dot"> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-tellurium-silicon-germanium-alloy?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Tellurium Silicon Germanium Alloy</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/phosphorus-arsenic-alloy-12255-33-3?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Black Phosphorus-Arsenic Alloy</a></li> </ul> </div> </div> <div class="panel panel-products"> <div class="panel-heading activate-panel" data-toggle="collapse" data-target="#oxide-products"> <span class="panel-title">Oxide Forms</span><span class="Arrowhead-Down-24 dropdown-icon"></span> </div> <div id="oxide-products" class="panel-body collapse row"> <ul class="grid grid3 no-dot"> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-oxide-nanoparticles-nanopowder-1327-53-3?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Oxide Nanoparticles</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-oxide-pellets-1327-53-3?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Oxide Pellets</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-oxide-pieces-1327-53-3?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Oxide Pieces</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-oxide-powder-1327-53-3?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Oxide Powder</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-oxide-rotatable-sputtering-target-1327-53-3?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Oxide Rotatable Sputtering Target</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-oxide-shot-1327-53-3?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Oxide Shot</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-oxide-sputtering-target-1327-53-3?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Oxide Sputtering Target</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-oxide-tablets-1327-53-3?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Oxide Tablets</a></li> </ul> </div> </div> <div class="panel panel-products"> <div class="panel-heading activate-panel" data-toggle="collapse" data-target="#organometallic-products"> <span class="panel-title">Organometallics</span><span class="Arrowhead-Down-24 dropdown-icon"></span> </div> <div id="organometallic-products" class="panel-body collapse row"> <ul class="grid grid3 no-dot"> <li class="product"><a href="https://www-americanelements-com.translate.goog/1-2-bis-diphenylarsino-ethane-4431-24-7?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">1,2-Bis(diphenylarsino)ethane</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/acetarsone-97-44-9?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Acetarsone</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenazo-i-disodium-salt-3547-38-4?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenazo I Disodium Salt</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenazo-i-trisodium-salt-66019-20-3?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenazo I Trisodium Salt</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenazo-iii-1668-00-4?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenazo III</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-ethoxide-3141-12-6?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Ethoxide</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenobetaine-64436-13-1?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenobetaine</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/dimethylarsinic-acid-75-60-5?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Dimethylarsinic Acid</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/cacodylic-acid-sodium-salt-124-65-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Cacodylic Acid Sodium Salt</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/cacodylic-acid-sodium-salt-trihydrate-6131-99-3?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Cacodylic Acid Sodium Salt Trihydrate</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/methyltriphenylarsonium-iodide-1499-33-8?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Methyltriphenylarsonium Iodide</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/phenylarsonic-acid-98-05-5?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Phenylarsonic Acid</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/phenylarsine-oxide-637-03-6?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Phenylarsine Oxide</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/tetraphenylarsonium-v-chloride-hydrate-507-28-8?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Tetraphenylarsonium(V) Chloride Hydrate</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/tetraphenylarsonium-v-chloride-hydrochloride-hydrate-123334-18-9?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Tetraphenylarsonium(V) Chloride Hydrochloride Hydrate</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/tetraphenylarsonium-v-chloride-monohydrate-104170-16-3?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Tetraphenylarsonium(V) Chloride Monohydrate</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/tertiarybutylarsine-4262-43-5?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Tertiarybutylarsine</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/triethyl-arsenate-15606-95-8?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Triethyl Arsenate</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/trimethylarsine-593-88-4?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Trimethylarsine</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/triphenylarsine-603-32-7?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Triphenylarsine</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/triphenylarsine-oxide-1153-05-5?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Triphenylarsine Oxide</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/tris-dimethylamino-arsine-6596-96-9?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Tris(dimethylamino)arsine</a></li> </ul> </div> </div> <div class="panel panel-products"> <div class="panel-heading activate-panel" data-toggle="collapse" data-target="#nanomaterial-products"> <span class="panel-title">Nanomaterials</span><span class="Arrowhead-Down-24 dropdown-icon"></span> </div> <div id="nanomaterial-products" class="panel-body collapse row"> <ul class="grid grid3 no-dot"> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-oxide-nanoparticle-dispersion-1327-53-3?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Oxide Nanoparticle Dispersion</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/arsenic-oxide-nanoparticles-nanopowder-1327-53-3?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic Oxide Nanoparticles</a></li> <li class="product"><a 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Arsenide Sputtering Target</a></li> <li class="product"><a href="https://www-americanelements-com.translate.goog/zinc-arsenide-sputtering-target-12006-40-5?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Zinc Arsenide Sputtering Target</a></li> </ul> </div> </div> <div class="openclose"> <div class="openall"> + Open All </div> <div class="closeall"> - Close All </div> </div> </div> <div class="tab-pane-intro"><span><img src="elemental-arsenic.png" width="80" height="80" alt="Elemental Arsenic Picture" class="image-left"></span> <p><strong>Arsenic</strong> has numerous applications as a semiconductor and other electronic applications as <a href="https://www-americanelements-com.translate.goog/indium-arsenide-1303-11-3?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Indium arsenide</a>, <a href="https://www-americanelements-com.translate.goog/silicon-arsenide?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en"> silicon arsenide</a> and <a href="https://www-americanelements-com.translate.goog/tin-arsenide?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en"> tin arsenide</a>. Arsenic is finding increasing uses as a doping agent in solid-state devices such as transistors. <a href="https://www-americanelements-com.translate.goog/gallium-arsenide-1303-00-0?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Gallium arsenide</a><img src="arsenic-sputtering-target.png" alt="High Purity (99.99999%) Arsenic (As) Sputtering Target" width="115" height="122" class="image-right"> is a semiconductor material frequently used in optoelectronic applications. Arsenic is used in bronzing and for hardening and improving the sphericity of shot. Due to their toxicity, arsenic compounds are used in insecticides and wood preservation. <a href="https://www-americanelements-com.translate.goog/arsenic-oxide-powder-1327-53-3?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en"><img src="arsenic-oxide-powder.png" alt="High Purity (99.9999%) Arsenic Oxide (As2O3) Powder" width="130" height="109" class="image-left"></a><a href="https://www-americanelements-com.translate.goog/arsenic-sputtering-target-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en"></a>Arsenic is available as <a href="https://www-americanelements-com.translate.goog/arsenic-metal-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">metal</a> and compounds with purities from 99% to 99.999% (ACS grade to <a href="https://www-americanelements-com.translate.goog/Ultra_high_purity_metals_powders.htm?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">ultra-high purity</a>). Elemental or metallic forms include <a href="https://www-americanelements-com.translate.goog/arsenic-pellets-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">pellets</a>, <a href="https://www-americanelements-com.translate.goog/arsenic-rod-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">rod</a>, <a href="https://www-americanelements-com.translate.goog/arsenic-wire-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">wire</a> and <a href="https://www-americanelements-com.translate.goog/arsenic-granules-7440-38-2?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">granules</a> for evaporation source material purposes. <a href="https://www-americanelements-com.translate.goog/arsenic-oxide-1327-53-3?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Arsenic oxides</a> are insoluble arsenic compounds available in <a href="https://www-americanelements-com.translate.goog/arsenic-oxide-powder-1327-53-3?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">powder</a> and dense <a href="https://www-americanelements-com.translate.goog/arsenic-oxide-pellets-1327-53-3?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">pellet</a> form for such uses as optical coating and thin film applications. Arsenic is also available in soluble forms including <a href="https://www-americanelements-com.translate.goog/arsenic-chloride-solution-7784-34-1?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">chlorides</a>, and <a href="https://www-americanelements-com.translate.goog/arsenic-acetate?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">acetates</a>. These compounds can be manufactured as <a href="https://www-americanelements-com.translate.goog/solutions?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">solutions</a> at specified stoichiometries.</p> </div> </div> <div class="tab-pane" id="properties" role="tabpanel" aria-labelledby="tab3"> <h2>Arsenic Properties</h2> <p><img src="arsenic-block.png" alt="Arsenic (As) atomic and molecular weight, atomic number and elemental symbol" hspace="10" class="image-left"><strong>Arsenic</strong> is a Block P, Group 15, Period 4 element.<img src="elemental-arsenic.png" alt="Elemental Arsenic" width="80" height="80" class="image-left"> <img src="arsenic-bohr.jpg" alt="Arsenic Bohr Model" width="200" height="200" class="image-right">The number of electrons in each of Arsenic's shells is 2, 8, 18, 5 and its electron configuration is [Ar] 3d<sup>10</sup> 4s<sup>2</sup> 4p<sup>3</sup>.The arsenic atom has a radius of 119.pm and its Van der Waals radius is 185.pm. In its elemental form, CAS 1327-53-3, arsenic has a metallic grey appearance. Arsenic is found in numerous minerals including arsenolite (As<sub>2</sub>O<sub>3</sub>), arsenopyrite (FeAsS), loellingite (FeAs<sub>2</sub>), orpiment (As<sub>2</sub>S<sub>3</sub>), and realgar (As<sub>4</sub>S<sub>4</sub>). Arsenic was discovered in the early Bronze Age, circa 2500 BC. It was first isolated by Albertus Magnus in 1250.</p> <div id="table-wrapper"> <div class="panel-group expanding" id="accordion2"> <div class="panel panel-default properties-panel"> <div class="panel-heading active-collapsible"><a data-toggle="collapse" class="activate-panel" href="https://www-americanelements-com.translate.goog/as.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en#general-properties">General Properties<span class="Arrowhead-Down-24 dropdown-icon"></span></a> </div> <div class="panel-collapse collapse" id="general-properties"> <table class="table properties-table"> <tbody> <tr> <th id="symbol">Symbol:</th> <td>As</td> </tr> <tr> <th id="atomic-number">Atomic Number:</th> <td>33</td> </tr> <tr> <th id="atomic-weight">Atomic Weight:</th> <td>74.92</td> </tr> <tr> <th id="element-category">Element Category:</th> <td>metalloid</td> </tr> <tr> <th id="group-period-block">Group, Period, Block:</th> <td>15 (pnictogens), 4, p</td> </tr> <tr> <th id="color">Color:</th> <td>metallic gray/ gray</td> </tr> <tr> <th id="other-names">Other Names:</th> <td>Arsen, Arsenico, Arsenik</td> </tr> </tbody> </table> </div> </div> <div class="panel panel-default properties-panel"> <div class="panel-heading active-collapsible"><a data-toggle="collapse" class="activate-panel" href="https://www-americanelements-com.translate.goog/as.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en#physical-properties">Physical Properties<span class="Arrowhead-Down-24 dropdown-icon"></span></a> </div> <div id="physical-properties" class="panel-collapse collapse"> <table class="properties-table table"> <tbody> <tr> <th id="melting-point">Melting Point:</th> <td>616 °C, 1140.8 °F, 889.15 K</td> </tr> <tr> <th id="boiling-point">Boiling Point:</th> <td>Sublimes</td> </tr> <tr> <th id="density">Density:</th> <td>5.778 kg·m<sup>3</sup></td> </tr> <tr> <th id="liquid-density">Liquid Density @ Melting Point:</th> <td>5.22 g/cm<sup>3</sup></td> </tr> <tr> <th id="density-20-degrees-C">Density @ 20°C:</th> <td>5.776 g/cm<sup>3</sup></td> </tr> <tr> <th id="solid-density">Density of Solid:</th> <td>5727 kg·m<sup>3</sup></td> </tr> <tr> <th id="specific-heat">Specific Heat:</th> <td>0.328 kJ/kg/K</td> </tr> <tr> <th id="superconductivity-temperature">Superconductivity Temperature:</th> <td>N/A</td> </tr> <tr> <th id="triple-point">Triple Point:</th> <td>1090&nbsp;K, 3628 kPa</td> </tr> <tr> <th id="critical-point">Critical Point:</th> <td>1673 K,&nbsp; MPa</td> </tr> <tr> <th id="fusion-heat">Heat of Fusion (kJ·mol<sup>-1</sup>):</th> <td>27.7</td> </tr> <tr> <th id="vaporization-heat">Heat of Vaporization (kJ·mol<sup>-1</sup>):</th> <td>31.9</td> </tr> <tr> <th id="atomization-heat">Heat of Atomization (kJ·mol<sup>-1</sup>):</th> <td>301.42</td> </tr> <tr> <th id="thermal-conductivity">Thermal Conductivity:</th> <td>W/cm/ K @ 298.2 K</td> </tr> <tr> <th id="thermal-expansion">Thermal Expansion:</th> <td>N/A</td> </tr> <tr> <th id="electrical-resistivity">Electrical Resistivity:</th> <td>260 nΩ·m at 0°C</td> </tr> <tr> <th id="tensile-strength">Tensile Strength:</th> <td>N/A</td> </tr> <tr> <th id="molar-heat-capacity">Molar Heat Capacity:</th> <td>24.64 J·mol<sup>-1</sup>·K<sup>-1</sup></td> </tr> <tr> <th id="youngs-modulus">Young's Modulus:</th> <td>8 GPa</td> </tr> <tr> <th id="shear-modulus">Shear Modulus:</th> <td>N/A</td> </tr> <tr> <th id="bulk-modulus">Bulk Modulus:</th> <td>22 GPa</td> </tr> <tr> <th id="poisson-ratio">Poisson Ratio:</th> <td>N/A</td> </tr> <tr> <th id="mohs-hardness">Mohs Hardness:</th> <td>3.5</td> </tr> <tr> <th id="vickers-hardness">Vickers Hardness:</th> <td>N/A</td> </tr> <tr> <th id="brinell-hardness">Brinell Hardness:</th> <td>1440 MPa</td> </tr> <tr> <th id="speed-of-sound">Speed of Sound:</th> <td>N/A</td> </tr> <tr> <th id="pauling-electronegativity">Pauling Electronegativity:</th> <td>2.18</td> </tr> <tr> <th id="sanderson-electronegativity">Sanderson Electronegativity:</th> <td>2.82</td> </tr> <tr> <th id="allerd-rochow-electronegativity">Allred Rochow Electronegativity:</th> <td>2.2</td> </tr> <tr> <th id="mulliken-jaffe-electronegativity">Mulliken-Jaffe Electronegativity:</th> <td>2.26 (20% s orbital)</td> </tr> <tr> <th id="allen-electronegativity">Allen Electronegativity:</th> <td>2.211</td> </tr> <tr> <th id="pauling-electropositivity">Pauling Electropositivity:</th> <td>1.82</td> </tr> <tr> <th id="reflectivity">Reflectivity (%):</th> <td>N/A</td> </tr> <tr> <th id="refractive-index">Refractive Index:</th> <td>1.001552&nbsp;</td> </tr> </tbody> </table> </div> </div> <div class="panel panel-default properties-panel"> <div class="panel-heading active-collapsible"><a data-toggle="collapse" class="activate-panel" href="https://www-americanelements-com.translate.goog/as.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en#chemical-properties">Chemical Properties<span class="Arrowhead-Down-24 dropdown-icon"></span></a> </div> <div id="chemical-properties" class="panel-collapse collapse"><!-- Table --> <table class="properties-table table"> <tbody> <tr> <th id="electrons">Electrons:</th> <td>33</td> </tr> <tr> <th id="protons">Protons:</th> <td>33</td> </tr> <tr> <th id="neutrons">Neutrons:</th> <td>42</td> </tr> <tr> <th id="electron-configuration">Electron Configuration:</th> <td>[Ar] 3d<sup>10</sup> 4s<sup>2</sup> 4p<sup>3</sup></td> </tr> <tr> <th id="atomic-radius">Atomic Radius:</th> <td>119 pm</td> </tr> <tr> <th id="atomic-radius-non-bonded">Atomic Radius,<br> non-bonded (Å):</th> <td>1.85</td> </tr> <tr> <th id="covalent-radius">Covalent Radius:</th> <td>119±4 pm</td> </tr> <tr> <th id="covalent-radius-non-bonded">Covalent Radius (Å):</th> <td>1.2</td> </tr> <tr> <th id="van-der-waals-radius">Van der Waals Radius:</th> <td>185 pm</td> </tr> <tr> <th id="oxidation-states">Oxidation States:</th> <td>5, 3, -3</td> </tr> <tr> <th id="phase">Phase:</th> <td>Solid</td> </tr> <tr> <th id="crystal-structure">Crystal Structure:</th> <td>simple trigonal</td> </tr> <tr> <th id="magnetic-ordering">Magnetic Ordering:</th> <td>diamagnetic</td> </tr> <tr> <th id="electron-affinity">Electron Affinity (kJ·mol<sup>-1</sup>)</th> <td>77.574</td> </tr> <tr> <th id="1-ionization">1<sup>st</sup> Ionization Energy:</th> <td>944.46 kJ·mol<sup>-1</sup></td> </tr> <tr> <th id="2-ionization">2<sup>nd</sup> Ionization Energy:</th> <td>1797.82 kJ·mol<sup>-1</sup></td> </tr> <tr> <th id="3-ionization">3<sup>rd</sup> Ionization Energy:</th> <td>2735.48 kJ·mol<sup>-1</sup></td> </tr> </tbody> </table> </div> </div> </div> <div class="panel-group expanding" id="accordion3"> <div class="panel panel-default properties-panel"> <div class="panel-heading active-collapsible"><a data-toggle="collapse" class="activate-panel" href="https://www-americanelements-com.translate.goog/as.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en#identifiers">Identifiers<span class="Arrowhead-Down-24 dropdown-icon"></span></a> </div> <div class="panel-collapse collapse" id="identifiers"> <table class="table properties-table"> <tbody> <tr> <th id="cas-number">CAS Number:</th> <td>7440-38-2</td> </tr> <tr> <th id="ec-number">EC Number:</th> <td>231-148-6</td> </tr> <tr> <th id="mdl-number">MDL Number:</th> <td>MFCD00085309</td> </tr> <tr> <th id="beilstein-number">Beilstein Number:</th> <td>N/A</td> </tr> <tr> <th id="smile-id">SMILES Identifier:</th> <td>[AsH3]</td> </tr> <tr> <th id="inchi-id">InChI Identifier:</th> <td>InChI=1S/As</td> </tr> <tr> <th id="inchi-key">InChI Key:</th> <td>RQNWIZPPADIBDY-UHFFFAOYSA-N</td> </tr> <tr> <th id="pubchem-cid">PubChem CID:</th> <td>5359596</td> </tr> <tr> <th id="chemspider-id">ChemSpider ID:</th> <td>4514330</td> </tr> </tbody> </table> </div> </div> <div class="panel panel-default properties-panel"> <div class="panel-heading active-collapsible"><a data-toggle="collapse" class="activate-panel" href="https://www-americanelements-com.translate.goog/as.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en#abundance">Abundance<span class="Arrowhead-Down-24 dropdown-icon"></span></a> </div> <div class="panel-collapse collapse" id="abundance"> <table class="table properties-table"> <tbody> <tr> <th class="abundance" id="earth-total">Earth - Total:</th> <td>&nbsp;3.2 ppm&nbsp;</td> </tr> <tr> <th class="abundance" id="mercury-total">Mercury - Total:</th> <td>6.4 ppm</td> </tr> <tr> <th class="abundance" id="venus-total">Venus - Total:</th> <td>3.1 ppm</td> </tr> <tr> <th class="abundance" id="abundance-earth-seawater-weight">Earth&nbsp;-&nbsp;Seawater (Oceans), ppb by weight:</th> <td>2.3</td> </tr> <tr> <th class="abundance" id="abundance-earth-seawater-atoms">Earth&nbsp;-&nbsp;Seawater (Oceans), ppb by atoms:</th> <td>0.19</td> </tr> <tr> <th class="abundance" id="abundance-earth-crust-weight">Earth&nbsp;-&nbsp; Crust (Crustal Rocks), ppb by weight:</th> <td>2100</td> </tr> <tr> <th class="abundance" id="abundance-earth-crust-atoms">Earth&nbsp;-&nbsp; Crust (Crustal Rocks), ppb by atoms:</th> <td>580</td> </tr> <tr> <th class="abundance" id="abundance-sun-weight">Sun - Total, ppb by weight:</th> <td>N/A</td> </tr> <tr> <th class="abundance" id="abundance-sun-atoms">Sun - Total, ppb by atoms:</th> <td>N/A</td> </tr> <tr> <th class="abundance" id="abundance-stream-weight">Stream, ppb by weight:</th> <td>1</td> </tr> <tr> <th class="abundance" id="abundance-stream-atoms">Stream, ppb by atoms:</th> <td>0.01</td> </tr> <tr> <th class="abundance" id="abundance-meterorite-carbonaceous-weight">Meterorite (Carbonaceous), ppb by weight:</th> <td>1800</td> </tr> <tr> <th class="abundance" id="abundance-meterorite-carbonaceous-atoms">Meterorite (Carbonaceous), ppb by atoms:</th> <td>460</td> </tr> <tr> <th class="abundance" id="abundance-human-body-weight">Typical Human Body, ppb by weight:</th> <td>50</td> </tr> <tr> <th class="abundance" id="abundance-human-body-atoms">Typical Human Body, ppb by atom:</th> <td>4</td> </tr> <tr> <th class="abundance" id="abundance-universe-weight">Universe, ppb by weight:</th> <td>8</td> </tr> <tr> <th class="abundance" id="abundance-universe-atoms">Universe, ppb by atom:</th> <td>0.1</td> </tr> </tbody> </table> </div> </div> <div class="panel panel-default properties-panel"> <div class="panel-heading active-collapsible"><a data-toggle="collapse" class="activate-panel" href="https://www-americanelements-com.translate.goog/as.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en#history">History<span class="Arrowhead-Down-24 dropdown-icon"></span></a> </div> <div class="panel-collapse collapse" id="history"> <table class="table properties-table"> <tbody> <tr> <th id="discovered">Discovered By:</th> <td>Ancients</td> </tr> <tr> <th id="discovery-date">Discovery Date:</th> <td>Bronze Age circa 2500 BC</td> </tr> <tr> <th id="first-isolation">First Isolation:</th> <td>Albertus Magnus (1250)</td> </tr> </tbody> </table> </div> </div> </div> </div> </div> <div class="tab-pane" id="safety" role="tabpanel" aria-labelledby="tab4"> <h2>Health, Safety &amp; Transportation Information for Arsenic</h2> <p>Though inorganic Arsenic is extremely toxic, even in very small amounts, other forms of arsenic have proven safe and even potentially beneficial to humans. Safety data for Arsenic and its compounds can vary widely depending on the form. For potential hazard information, toxicity, and road, sea and air transportation limitations, such as DOT Hazard Class, DOT Number, EU Number, NFPA Health rating and RTECS Class, please see the specific material or compound referenced in the Products tab. The below information applies to elemental (metallic) Arsenic.<br></p> <table class="safety-table"> <thead> <tr> <th colspan="2" id="safety-data">Safety Data</th> </tr> </thead> <tbody> <tr> <th><a href="https://www-americanelements-com.translate.goog/safety-information.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en#signalword">Signal Word </a></th> <td>Danger</td> </tr> <tr> <th><a href="https://www-americanelements-com.translate.goog/safety-information.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en#hazardstatements">Hazard Statements </a></th> <td>H301-H331-H410</td> </tr> <tr> <th><a href="https://www-americanelements-com.translate.goog/hazard-codes.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en#hazardcodes">Hazard Codes</a></th> <td>T, N</td> </tr> <tr> <th><a href="https://www-americanelements-com.translate.goog/safety-information.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en#riskcodes">Risk Codes </a></th> <td>23/25-50/53</td> </tr> <tr> <th><a href="https://www-americanelements-com.translate.goog/safety-information.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en#safetyprecautions">Safety Precautions </a></th> <td>20/21-28-45-60-61</td> </tr> <tr> <th><a href="https://www-americanelements-com.translate.goog/safety-information.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en#rtecs">RTECS Number </a></th> <td>CG0525000</td> </tr> <tr> <th><a href="https://www-americanelements-com.translate.goog/safety-information.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en#transportation">Transport Information</a></th> <td>UN 1558 6.1/PG 2</td> </tr> <tr> <th><a href="https://www-americanelements-com.translate.goog/safety-information.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en#wgk">WGK Germany </a></th> <td>3</td> </tr> <tr> <th><a href="https://www-americanelements-com.translate.goog/hazard-codes.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en">Globally Harmonized System of <br> Classification and Labelling (GHS) </a></th> <td><a href="https://www-americanelements-com.translate.goog/hazard-codes.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en#skullcrossbones"><img src="skull.png" alt="Skull and Crossbones-Acute Toxicity " width="44" height="43"></a> <a href="https://www-americanelements-com.translate.goog/hazard-codes.html?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en#environment"><img src="environment.png" alt="Environment-Hazardous to the aquatic environment " width="42" height="42"></a></td> </tr> </tbody> </table> <div class="panel-group expanding" id="accordion4"> <div class="panel panel-products"> <div class="panel-heading panel-heading-sds activate-panel active-panel" data-toggle="collapse" data-target="#sds"> <span class="panel-title">Review and Print SDS Arsenic Metal</span><span class="Arrowhead-Down-24 dropdown-icon"></span> </div> <div id="sds" class="panel-body collapse in row"> <div class="view view-sds-pane view-id-sds_pane view-display-id-block sds-content view-dom-id-1dce6ce0c5ecaa84583a60afbb8eed94"> <div class="view-header"> <div class="link-container"><span class="print_pdf"><a href="https://www-americanelements-com.translate.goog/printpdf/arsenic-metal-7440-38-2/sds?_x_tr_sl=en&amp;_x_tr_tl=ko&amp;_x_tr_hl=en" title="Display a PDF version of this page." class="print-pdf" rel="nofollow">Create Printable PDF</a></span> </div> <h2 class="centered">SAFETY DATA SHEET</h2> <div id="sds-date"> <div> <strong>Date Created:</strong> 05/15/2015 </div> <div> <strong>Date Revised:</strong> 05/15/2015 </div> </div> </div> <div class="view-content"> <div> <hr> <h3>SECTION 1. IDENTIFICATION</h3> <p><strong>Product Name:</strong> Arsenic Metal</p> <p><strong>Product Number:</strong> All applicable American Elements product codes, e.g. AS-E-03, AS-E-04, AS-E-05, AS-E-06, AS-E-07</p> <p><strong>CAS #:</strong> 7440-38-2</p> <p><strong>Relevant identified uses of the substance: </strong> Scientific research and development</p> <p>Supplier details:<br> American Elements<br> 1093 Broxton Ave. Suite 2000<br> Los Angeles, CA 90024<br> Tel: +1 310-208-0551<br> Fax: +1 310-208-0351<br><br> Emergency telephone number:<br> Domestic, North America +1 800-424-9300<br> International +1 703-527-3887</p> <hr> <h3>SECTION 2. HAZARDS IDENTIFICATION</h3> <p>Classification of the substance or mixture<br> Classification according to Regulation (EC) No 1272/2008<br> GHS06 Skull and crossbones<br> Acute Tox. 3 H301 Toxic if swallowed.<br> Acute Tox. 3 H331 Toxic if inhaled.<br> Hazards not otherwise classified<br> No information known.<br> Label elements<br> Labelling according to Regulation (EC) No 1272/2008<br> The substance is classified and labeled according to the CLP regulation.<br> Hazard pictograms</p> <div class="ghs-images"> <img src="https://www.americanelements.com/skull.png" alt="Skull and Crossbones - GHS06" width="44" height="43"> </div> <p>Signal word<br> Danger<br> Hazard statements<br> H301+H331 Toxic if swallowed or if inhaled.<br> Precautionary statements<br> P261 Avoid breathing dust/fume/gas/mist/vapours/spray.<br> P304+P340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.<br> P321 Specific treatment (see on this label).<br> P405 Store locked up.<br> P403+P233 Store in a well-ventilated place. Keep container tightly closed.<br> P501 Dispose of contents/container in accordance with local/regional/<br> national/international regulations.<br> WHMIS classification<br> D1A - Very toxic material causing immediate and serious toxic effects<br> D2A - Very toxic material causing other toxic effects<br> Classification system<br> HMIS ratings (scale 0-4)<br> (Hazardous Materials Identification System)<br> HEALTH<br> FIRE<br> REACTIVITY<br> 3<br> 1<br> 1<br> Health (acute effects) = 3<br> Flammability = 1<br> Physical Hazard = 1<br> Other hazards<br> Results of PBT and vPvB assessment<br> PBT:<br> Not applicable.<br> vPvB:<br> Not applicable.</p> <hr> <h3>SECTION 3. COMPOSITION/INFORMATION ON INGREDIENTS</h3> <p>Chemical characterization: Substances<br> CAS# Description:<br> 7440-38-2 Arsenic<br> Identification number(s):<br> EC number:<br> 231-148-6<br> Index number:<br> 033-001-00-X</p> <hr> <h3>SECTION 4. FIRST AID MEASURES</h3> <p>Description of first aid measures<br> General information<br> Immediately remove any clothing soiled by the product.<br> Remove breathing apparatus only after contaminated clothing has been completely removed.<br> In case of irregular breathing or respiratory arrest provide artificial respiration.<br> After inhalation<br> Supply fresh air. If required, provide artificial respiration. Keep patient warm.<br> Seek immediate medical advice.<br> After skin contact<br> Immediately wash with water and soap and rinse thoroughly.<br> Seek immediate medical advice.<br> After eye contact<br> Rinse opened eye for several minutes under running water. Then consult a doctor.<br> After swallowing<br> Do not induce vomiting; immediately call for medical help.<br> Information for doctor<br> Most important symptoms and effects, both acute and delayed<br> No further relevant information available.<br> Indication of any immediate medical attention and special treatment needed<br> No further relevant information available.</p> <hr> <h3>SECTION 5. FIREFIGHTING MEASURES</h3> <p>Extinguishing media<br> Suitable extinguishing agents<br> Product is not flammable. Use fire-fighting measures that suit the surrounding fire.<br> Special hazards arising from the substance or mixture<br> If this product is involved in a fire, the following can be released:<br> Arsenic oxides (AS2Ox)<br> Advice for firefighters<br> Protective equipment:<br> Wear self-contained respirator.<br> Wear fully protective impervious suit.</p> <hr> <h3>SECTION 6. ACCIDENTAL RELEASE MEASURES</h3> <p>Personal precautions, protective equipment and emergency procedures<br> Wear protective equipment. Keep unprotected persons away.<br> Ensure adequate ventilation<br> Environmental precautions:<br> Do not allow product to reach sewage system or any water course.<br> Methods and material for containment and cleaning up:<br> Dispose of contaminated material as waste according to section 13.<br> Ensure adequate ventilation.<br> Prevention of secondary hazards:<br> No special measures required.<br> Reference to other sections<br> See Section 7 for information on safe handling<br> See Section 8 for information on personal protection equipment.<br> See Section 13 for disposal information.</p> <hr> <h3>SECTION 7. HANDLING AND STORAGE</h3> <p>Handling<br> Precautions for safe handling<br> Keep container tightly sealed.<br> Store in cool, dry place in tightly closed containers.<br> Ensure good ventilation at the workplace.<br> Open and handle container with care.<br> Information about protection against explosions and fires:<br> The product is not flammable<br> Conditions for safe storage, including any incompatibilities<br> Storage<br> Requirements to be met by storerooms and receptacles:<br> No special requirements.<br> Information about storage in one common storage facility:<br> Do not store together with acids.<br> Store away from oxidizing agents.<br> Further information about storage conditions:<br> Keep container tightly sealed.<br> Store in cool, dry conditions in well sealed containers.<br> Specific end use(s)<br> No further relevant information available.</p> <hr> <h3>SECTION 8. EXPOSURE CONTROLS/PERSONAL PROTECTION</h3> <p>Additional information about design of technical systems:<br> Properly operating chemical fume hood designed for hazardous chemicals and<br> having an average face velocity of at least 100 feet per minute.<br> Control parameters<br> Components with limit values that require monitoring at the workplace:<br> 7440-38-2 Arsenic (100.0%)<br> PEL (USA) Long-term value: 0.5* 0.01** mg/m³<br> as As; *organic**inorg. compds.; 29 CFR 1910.1018<br> REL (USA) Ceiling limit value: 0.002 mg/m³<br> as As; 15min; See Pocket Guide App. A<br> TLV (USA) Long-term value: 0.01 mg/m³<br> as As; BEI<br> EL (Canada) Long-term value: 0.01 mg/m³<br> as As; ACIGH A1, IARC1<br> EV (Canada) Short-term value: 0.05 mg/m³<br> Long-term value: 0.01 mg/m³<br> as As<br> Ingredients with biological limit values:<br> 7440-38-2 Arsenic (100.0%)<br> BEI (USA) 35 μg As/L<br> Medium: urine<br> Time: end of workweek<br> Parameter: Inorganic arsenic plus methylated metabolites (background)<br> Additional information:<br> No data<br> Exposure controls<br> Personal protective equipment<br> General protective and hygienic measures<br> The usual precautionary measures for handling chemicals should be followed.<br> Keep away from foodstuffs, beverages and feed.<br> Remove all soiled and contaminated clothing immediately.<br> Wash hands before breaks and at the end of work.<br> Store protective clothing separately.<br> Maintain an ergonomically appropriate working environment.<br> Breathing equipment:<br> Use self-contained respiratory protective device in emergency situations.<br> Recommended filter device for short term use:<br> Use a respirator with type P100 (USA) or P3 (EN 143) cartridges as a backup to engineering controls. Risk assessment should be performed to determine if air-purifying respirators are appropriate. Only use equipment tested and approved under appropriate government standards.<br> Protection of hands:<br> Impervious gloves<br> Check protective gloves prior to each use for their proper condition.<br> The selection of suitable gloves not only depends on the material, but also on quality. Quality will vary from manufacturer to manufacturer.<br> Material of gloves<br> Nitrile rubber, NBR<br> Penetration time of glove material (in minutes)<br> 480<br> Glove thickness<br> 0.11 mm<br> Eye protection:<br> Safety glasses<br> Body protection:<br> Protective work clothing</p> <hr> <h3>SECTION 9. PHYSICAL AND CHEMICAL PROPERTIES</h3> <p>Information on basic physical and chemical properties<br> General Information<br> Appearance:<br> Form: Various forms (powder/flake/crystalline/beads, etc.)<br> Color: Grey<br> Odor: Odorless<br> Odor threshold: Not determined.<br> pH-value: Not applicable.<br> Change in condition<br> Melting point/Melting range: 817 °C (1503 °F)<br> Boiling point/Boiling range: 614 °C (1137 °F)<br> Sublimation temperature / start: Not determined<br> Flammability (solid, gaseous)<br> Not determined.<br> Ignition temperature: Not determined<br> Decomposition temperature: Not determined<br> Auto igniting: Not determined.<br> Danger of explosion: Not determined.<br> Explosion limits:<br> Lower: Not determined<br> Upper: Not determined<br> Vapor pressure at 267 °C (513 °F): 0.01 hPa<br> Density at 20 °C (68 °F): 5.778 g/cm³ (48.217 lbs/gal)<br> Relative density<br> Not determined.<br> Vapor density<br> Not applicable.<br> Evaporation rate<br> Not applicable.<br> Solubility in / Miscibility with Water: Insoluble<br> Partition coefficient (n-octanol/water): Not determined.<br> Viscosity:<br> dynamic: Not applicable.<br> kinematic: Not applicable.<br> Other information<br> No further relevant information available.</p> <hr> <h3>SECTION 10. STABILITY AND REACTIVITY</h3> <p>Reactivity<br> No information known.<br> Chemical stability<br> Stable under recommended storage conditions.<br> Thermal decomposition / conditions to be avoided:<br> Decomposition will not occur if used and stored according to specifications.<br> Possibility of hazardous reactions<br> Reacts with strong oxidizing agents<br> Conditions to avoid<br> No further relevant information available.<br> Incompatible materials:<br> Acids<br> Oxidizing agents<br> Hazardous decomposition products:<br> Arsenic oxides (As2Ox)</p> <hr> <h3>SECTION 11. TOXICOLOGICAL INFORMATION</h3> <p>Information on toxicological effects<br> Acute toxicity:<br> Toxic if inhaled.<br> Toxic if swallowed.<br> The Registry of Toxic Effects of Chemical Substances (RTECS) contains acute toxicity data for this substance.<br> LD/LC50 values that are relevant for classification:<br> No data<br> Skin irritation or corrosion:<br> May cause irritation<br> Eye irritation or corrosion:<br> May cause irritation<br> Sensitization:<br> No sensitizing effects known.<br> Germ cell mutagenicity:<br> The Registry of Toxic Effects of Chemical Substances (RTECS) contains mutation data for this substance.<br> Carcinogenicity:<br> EPA-A: human carcinogen: sufficient evidence from epidemiologic studies to support a causal association between exposure and cancer.<br> IARC-1: Carcinogenic to humans: sufficient evidence of carcinogenicity.<br> ACGIH A1: Confirmed human carcinogen: Agent is carcinogenic to<br> humans based on epidemiologic studies of, or convincing clinical evidence in, exposed humans.<br> Carcinogen as defined by OSHA.<br> NTP-K: Known to be carcinogenic: sufficient evidence from human studies.<br> The Registry of Toxic Effects of Chemical Substances (RTECS) contains tumorigenic and/or carcinogenic and/or neoplastic data for this substance.<br> Reproductive toxicity:<br> The Registry of Toxic Effects of Chemical Substances (RTECS) contains reproductive data for this substance.<br> Specific target organ system toxicity - repeated exposure:<br> No effects known.<br> Specific target organ system toxicity - single exposure:<br> No effects known.<br> Aspiration hazard:<br> No effects known.<br> Subacute to chronic toxicity:<br> The Registry of Toxic Effects of Chemical Substances (RTECS) contains multiple dose toxicity data for this substance.<br> Additional toxicological information:<br> To the best of our knowledge the acute and chronic toxicity of this substance is not fully known.<br> Carcinogenic categories<br> OSHA-Ca (Occupational Safety &amp; Health Administration)<br> Substance is listed</p> <hr> <h3>SECTION 12. ECOLOGICAL INFORMATION</h3> <p>Toxicity<br> Aquatic toxicity:<br> No further relevant information available.<br> Persistence and degradability<br> No further relevant information available.<br> Bioaccumulative potential<br> No further relevant information available.<br> Mobility in soil<br> No further relevant information available.<br> Ecotoxical effects:<br> Remark:<br> Very toxic for aquatic organisms<br> Additional ecological information:<br> General notes:<br> Do not allow product to reach ground water, water course or sewage system, even in small quantities.<br> Danger to drinking water if even extremely small quantities leak into the ground.<br> Also poisonous for fish and plankton in water bodies.<br> May cause long lasting harmful effects to aquatic life.<br> Avoid transfer into the environment.<br> Very toxic for aquatic organisms<br> Results of PBT and vPvB assessment<br> PBT:<br> Not applicable.<br> vPvB:<br> Not applicable.<br> Other adverse effects<br> No further relevant information available.</p> <hr> <h3>SECTION 13. DISPOSAL CONSIDERATIONS</h3> <p>Waste treatment methods<br> Recommendation<br> Consult state, local or national regulations to ensure proper disposal.<br> Uncleaned packagings:<br> Recommendation:<br> Disposal must be made according to official regulations.</p> <hr> <h3>SECTION 14. TRANSPORT INFORMATION</h3> <p>UN-Number<br> DOT, IMDG, IATA<br> UN1558<br> UN proper shipping name<br> DOT<br> Arsenic<br> IMDG, IATA<br> ARSENIC<br> Transport hazard class(es)<br> DOT<br> Class<br> 6.1 Toxic substances.<br> Label<br> 6.1<br> Class<br> 6.1 (T5) Toxic substances<br> Label<br> 6.1<br> IMDG, IATA<br> Class<br> 6.1 Toxic substances.<br> Label<br> 6.1<br> Packing group<br> DOT, IMDG, IATA<br> II<br> Environmental hazards:<br> Environmentally hazardous substance, solid; Marine Pollutant<br> Special precautions for user<br> Warning: Toxic substances<br> EMS Number: F-A,S-A<br> Transport in bulk according to Annex II of MARPOL73/78 and the IBC Code<br> Not applicable.<br> Transport/Additional information:<br> DOT<br> Marine Pollutant (DOT):<br> No<br> UN "Model Regulation":<br> UN1558, Arsenic, 6.1, II</p> <hr> <h3>SECTION 15. REGULATORY INFORMATION</h3> <p>Safety, health and environmental regulations/legislation specific for the substance or mixture<br> National regulations<br> All components of this product are listed in the U.S. Environmental Protection Agency Toxic Substances Control Act Chemical substance Inventory.<br> All components of this product are listed on the Canadian Domestic Substances List (DSL).<br> SARA Section 313 (specific toxic chemical listings)<br> 7440-38-2 Arsenic<br> California Proposition 65<br> Prop 65 - Chemicals known to cause cancer<br> Substance is not listed.<br> Prop 65 - Developmental toxicity<br> Substance is not listed.<br> Prop 65 - Developmental toxicity, female<br> Substance is not listed.<br> Prop 65 - Developmental toxicity, male<br> Substance is not listed.<br> Information about limitation of use:<br> For use only by technically qualified individuals.<br> Other regulations, limitations and prohibitive regulations<br> Substance of Very High Concern (SVHC) according to the REACH Regulations (EC) No. 1907/2006.<br> Substance is not listed.<br> The conditions of restrictions according to Article 67 and Annex XVII of the Regulation (EC) No 1907/2006 (REACH) for the manufacturing, placing on the market and use must be observed.<br> Substance is not listed.<br> Annex XIV of the REACH Regulations (requiring Authorisation for use)<br> Substance is not listed.<br> Chemical safety assessment:<br> A Chemical Safety Assessment has not been carried out.</p> <hr> <h3>16. OTHER INFORMATION</h3> <p>Safety Data Sheet according to Regulation (EC) No. 1907/2006 (REACH). The above information is believed to be correct but does not purport to be all inclusive and shall be used only as a guide. The information in this document is based on the present state of our knowledge and is applicable to the product with regard to appropriate safety precautions. It does not represent any guarantee of the properties of the product. American Elements shall not be held liable for any damage resulting from handling or from contact with the above product. See reverse side of invoice or packing slip for additional terms and conditions of sale. COPYRIGHT 1997-2016 AMERICAN ELEMENTS. LICENSED GRANTED TO MAKE UNLIMITED PAPER COPIES FOR INTERNAL USE ONLY.</p> </div> </div> </div> </div> </div> </div> </div> <div class="tab-pane" id="isotopes" role="tabpanel" aria-labelledby="tab5"> <h2>Arsenic Isotopes</h2> <p>Arsenic has one stable isotope: <sup>75</sup>As.</p> <table class="isotopes-table"> <tbody> <tr> <th scope="col" id="nuclide">Nuclide</th> <th scope="col" id="mass">Isotopic Mass</th> <th scope="col" id="half-life">Half-Life</th> <th scope="col" id="decay">Mode of Decay</th> <th scope="col" id="nuclear-spin">Nuclear Spin</th> <th scope="col" id="magnetic-moment">Magnetic Moment</th> <th scope="col" id="binding-energy">Binding Energy (MeV)</th> <th scope="col" id="natural-abundance">Natural Abundance<br> (% by atom)</th> </tr> <tr> <th scope="row"><sup>60</sup>As</th> <td>59.99313(64)#</td> <td>UnKnown</td> <td>p to <sup>59</sup>Ge</td> <td>5+#</td> <td>N/A</td> <td>454.22</td> <td>-</td> </tr> <tr> <th scope="row"><sup>61</sup>As</th> <td>60.98062(64)#</td> <td>UnKnown</td> <td>p to <sup>60</sup>Ge</td> <td>3/2-#</td> <td>N/A</td> <td>474.41</td> <td>-</td> </tr> <tr> <th scope="row"><sup>62</sup>As</th> <td>61.97320(32)#</td> <td>UnKnown</td> <td>p to <sup>61</sup>Ge</td> <td>1+#</td> <td>N/A</td> <td>489.01</td> <td>-</td> </tr> <tr> <th scope="row"><sup>63</sup>As</th> <td>62.96369(54)#</td> <td>UnKnown</td> <td>p to <sup>62</sup>Ge</td> <td>(3/2-)#</td> <td>N/A</td> <td>506.4</td> <td>-</td> </tr> <tr> <th scope="row"><sup>64</sup>As</th> <td>63.95757(38)#</td> <td>40(30) ms [18(+43-7) ms]</td> <td>p to <sup>63</sup>Ge</td> <td>0+#</td> <td>N/A</td> <td>520.07</td> <td>-</td> </tr> <tr> <th scope="row"><sup>65</sup>As</th> <td>64.94956(32)#</td> <td>170(30) ms</td> <td>ß<sup>+</sup> to <sup>64</sup>Ge</td> <td>3/2-#</td> <td>N/A</td> <td>535.6</td> <td>-</td> </tr> <tr> <th scope="row"><sup>66</sup>As</th> <td>65.94471(73)</td> <td>95.77(23) ms</td> <td>ß<sup>+</sup> to <sup>65</sup>Ge</td> <td>(0+)</td> <td>N/A</td> <td>548.34</td> <td>-</td> </tr> <tr> <th scope="row"><sup>67</sup>As</th> <td>66.93919(11)</td> <td>42.5(12) s</td> <td>ß<sup>+</sup> to <sup>66</sup>Ge</td> <td>(5/2-)</td> <td>N/A</td> <td>561.07</td> <td>-</td> </tr> <tr> <th scope="row"><sup>68</sup>As</th> <td>67.93677(5)</td> <td>151.6(8) s</td> <td>EC to <sup>68</sup>Ge</td> <td>3+</td> <td>N/A</td> <td>571.95</td> <td>-</td> </tr> <tr> <th scope="row"><sup>69</sup>As</th> <td>68.93227(3)</td> <td>15.2(2) min</td> <td>EC to <sup>69</sup>Ge</td> <td>5/2-</td> <td>1.2</td> <td>583.75</td> <td>-</td> </tr> <tr> <th scope="row"><sup>70</sup>As</th> <td>69.93092(5)</td> <td>52.6(3) min</td> <td>EC to <sup>70</sup>Ge</td> <td>4(+#)</td> <td>2.1061</td> <td>593.7</td> <td>-</td> </tr> <tr> <th scope="row"><sup>71</sup>As</th> <td>70.927112(5)</td> <td>65.28(15) h</td> <td>EC to <sup>71</sup>Ge</td> <td>5/2-</td> <td>1.6735</td> <td>604.57</td> <td>-</td> </tr> <tr> <th scope="row"><sup>72</sup>As</th> <td>71.926752(5)</td> <td>26.0(1) h</td> <td>EC to <sup>72</sup>Ge</td> <td>2-</td> <td>-2.1566</td> <td>613.58</td> <td>-</td> </tr> <tr> <th scope="row"><sup>73</sup>As</th> <td>72.923825(4)</td> <td>80.30(6) d</td> <td>EC to <sup>73</sup>Ge</td> <td>3/2-</td> <td>N/A</td> <td>624.45</td> <td>-</td> </tr> <tr> <th scope="row"><sup>74</sup>As</th> <td>73.9239287(25)</td> <td>17.77(2) d</td> <td>ß<sup>-</sup>&nbsp;to <sup>74</sup>Se; EC to <sup>74</sup>Ge</td> <td>2-</td> <td>-1.597</td> <td>632.53</td> <td>-</td> </tr> <tr> <th scope="row"><sup>75</sup>As</th> <td>74.9215965(20)</td> <td>STABLE</td> <td>ß<sup>-</sup>&nbsp;to <sup>76</sup>Se</td> <td>3/2-</td> <td>-0.906</td> <td>642.47</td> <td>-</td> </tr> <tr> <th scope="row"><sup>76</sup>As</th> <td>75.922394(2)</td> <td>1.0942(7) d</td> <td>-</td> <td>2-</td> <td>1.43947</td> <td>649.62</td> <td>100</td> </tr> <tr> <th scope="row"><sup>77</sup>As</th> <td>76.9206473(25)</td> <td>38.83(5) h</td> <td>ß<sup>-</sup>&nbsp;to <sup>77</sup>Se</td> <td>3/2-</td> <td>N/A</td> <td>659.56</td> <td>-</td> </tr> <tr> <th scope="row"><sup>78</sup>As</th> <td>77.921827(11)</td> <td>90.7(2) min</td> <td>ß<sup>-</sup>&nbsp;to <sup>78</sup>Se</td> <td>2-</td> <td>N/A</td> <td>666.71</td> <td>-</td> </tr> <tr> <th scope="row"><sup>79</sup>As</th> <td>78.920948(6)</td> <td>9.01(15) min</td> <td>ß<sup>-</sup>&nbsp;to <sup>79</sup>Se</td> <td>3/2-</td> <td>N/A</td> <td>675.72</td> <td>-</td> </tr> <tr> <th scope="row"><sup>80</sup>As</th> <td>79.922534(25)</td> <td>15.2(2) s</td> <td>ß<sup>-</sup>&nbsp;to <sup>80</sup>Se</td> <td>1+</td> <td>N/A</td> <td>681.94</td> <td>-</td> </tr> <tr> <th scope="row"><sup>81</sup>As</th> <td>80.922132(6)</td> <td>33.3(8) s</td> <td>ß<sup>-</sup>&nbsp;to <sup>81</sup>Se</td> <td>3/2-</td> <td>N/A</td> <td>690.01</td> <td>-</td> </tr> <tr> <th scope="row"><sup>82</sup>As</th> <td>81.92450(21)</td> <td>19.1(5) s</td> <td>ß<sup>-</sup>&nbsp;to <sup>82</sup>Se</td> <td>(1+)</td> <td>N/A</td> <td>696.23</td> <td>-</td> </tr> <tr> <th scope="row"><sup>83</sup>As</th> <td>82.92498(24)</td> <td>13.4(3) s</td> <td>ß<sup>-</sup>&nbsp;to <sup>83</sup>Se</td> <td>3/2-#</td> <td>N/A</td> <td>704.31</td> <td>-</td> </tr> <tr> <th scope="row"><sup>84</sup>As</th> <td>83.92906(32)#</td> <td>4.02(3) s</td> <td>ß<sup>-</sup>&nbsp;to <sup>84</sup>Se; ß<sup>-</sup>&nbsp;+ n to <sup>83</sup>Se</td> <td>(3)(+#)</td> <td>N/A</td> <td>707.73</td> <td>-</td> </tr> <tr> <th scope="row"><sup>85</sup>As</th> <td>84.93202(21)#</td> <td>2.021(10) s</td> <td>ß<sup>-</sup>&nbsp;+ n to <sup>84</sup>Se; ß<sup>-</sup>&nbsp;to <sup>85</sup>Se</td> <td>(3/2-)#</td> <td>N/A</td> <td>713.01</td> <td>-</td> </tr> <tr> <th scope="row"><sup>86</sup>As</th> <td>85.93650(32)#</td> <td>0.945(8) s</td> <td>ß<sup>-</sup>&nbsp;to <sup>86</sup>Se; ß<sup>-</sup>&nbsp;+ n to <sup>85</sup>Se</td> <td>N/A</td> <td>N/A</td> <td>717.37</td> <td>-</td> </tr> <tr> <th scope="row"><sup>87</sup>As</th> <td>86.93990(32)#</td> <td>0.56(8) s</td> <td>ß<sup>-</sup>&nbsp;to <sup>87</sup>Se; ß<sup>-</sup>&nbsp;+ n to <sup>86</sup>Se</td> <td>3/2-#</td> <td>N/A</td> <td>722.65</td> <td>-</td> </tr> <tr> <th scope="row"><sup>88</sup>As</th> <td>87.94494(54)#</td> <td>300# ms [&gt;300 ns]</td> <td>ß<sup>-</sup>&nbsp;to <sup>88</sup>Se; ß<sup>-</sup>&nbsp;+ n to <sup>87</sup>Se</td> <td>N/A</td> <td>N/A</td> <td>726.07</td> <td>-</td> </tr> <tr> <th scope="row"><sup>89</sup>As</th> <td>88.94939(54)#</td> <td>200# ms [&gt;300 ns]</td> <td>ß<sup>-</sup>&nbsp;to <sup>89</sup>Se</td> <td>3/2-#</td> <td>N/A</td> <td>729.49</td> <td>-</td> </tr> <tr> <th scope="row"><sup>90</sup>As</th> <td>89.95550(86)#</td> <td>80# ms [&gt;300 ns]</td> <td>Unkown</td> <td>N/A</td> <td>N/A</td> <td>731.98</td> <td>-</td> </tr> <tr> <th scope="row"><sup>91</sup>As</th> <td>90.96043(97)#</td> <td>50# ms [&gt;300 ns]</td> <td>Unkown</td> <td>3/2-#</td> <td>N/A</td> <td>735.4</td> <td>-</td> </tr> <tr> <th scope="row"><sup>92</sup>As</th> <td>91.96680(97)#</td> <td>30# ms [&gt;300 ns]</td> <td>Unkown</td> <td>N/A</td> <td>N/A</td> <td>737.89</td> <td>-</td> </tr> </tbody> </table> </div> </div><!-- InstanceEndEditable --> </div> </div> </div> <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script> <script src="https://www.americanelements.com/css/bootstrap/js/bootstrap.js"></script> <script src="https://www.americanelements.com/css/slippry.min.js"></script> <div class="scrollup"> ^ </div> <script> $(document).ready(function(){ $(window).scroll(function () { if ($(this).scrollTop() > 350) { $('.scrollup').fadeIn(500); 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