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.ib-chembox td+td{width:60%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .ib-chembox figure:not(.skin-invert-image):not(.skin-invert):not(.bg-transparent){background:var(--background-color-inverted,#f8f9fa)}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .ib-chembox figure:not(.skin-invert-image):not(.skin-invert):not(.bg-transparent){background:var(--background-color-inverted,#f8f9fa)}}</style> <table class="infobox ib-chembox"> <caption>Dihydrogen phosphate </caption> <tbody><tr> <td colspan="2" style="text-align:center; padding:2px;"><figure class="mw-halign-center" typeof="mw:File"><a href="/wiki/File:Dihydrogen_phosphate.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f2/Dihydrogen_phosphate.svg/220px-Dihydrogen_phosphate.svg.png" decoding="async" width="220" height="233" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f2/Dihydrogen_phosphate.svg/330px-Dihydrogen_phosphate.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f2/Dihydrogen_phosphate.svg/440px-Dihydrogen_phosphate.svg.png 2x" data-file-width="134" data-file-height="142" /></a><figcaption></figcaption></figure> </td></tr> <tr> <th colspan="2" style="background: #f8eaba;color:inherit; text-align: center;">Names </th></tr> <tr> <td colspan="2" style="text-align:left;"><a href="/wiki/Chemical_nomenclature" title="Chemical nomenclature">IUPAC name</a> <div style="max-width:22em; word-wrap:break-word; padding-left:1.7em;">Dihydrogenphosphate</div> </td></tr> <tr> <td colspan="2" style="text-align:left;"><a href="/wiki/Chemical_nomenclature#Systematic_name" title="Chemical nomenclature">Systematic IUPAC name</a> <div style="max-width:22em; word-wrap:break-word; padding-left:1.7em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0; max-width:22em;">Phosphoric acid, ion(1-)</div></div> </td></tr> <tr> <td colspan="2" style="text-align:left;">Other names <div style="max-width:22em; word-wrap:break-word; padding-left:1.7em;">Phosphoric acid, ion(1-) Dehydrophosphoric acid (1-)</div> </td></tr> <tr> <th colspan="2" style="background: #f8eaba;color:inherit; text-align: center;">Identifiers </th></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/CAS_Registry_Number" title="CAS Registry Number">CAS Number</a></div> </td> <td><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style><div class="plainlist"><ul><li><span title="commonchemistry.cas.org"><a rel="nofollow" class="external text" href="https://commonchemistry.cas.org/detail?cas_rn=14066-20-7">14066-20-7</a></span><sup> <span typeof="mw:File"><span><img alt="check" src="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/7px-Yes_check.svg.png" decoding="async" width="7" height="7" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/11px-Yes_check.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/14px-Yes_check.svg.png 2x" data-file-width="600" data-file-height="600" /></span></span><span style="display:none">Y</span></sup></li></ul></div> </td></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">3D model (<a href="/wiki/JSmol" class="mw-redirect" title="JSmol">JSmol</a>)</div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><span title="chemapps.stolaf.edu (3D interactive model)"><a rel="nofollow" class="external text" href="https://chemapps.stolaf.edu/jmol/jmol.php?model=OP%28%3DO%29%28O%29%5BO-%5D">Interactive image</a></span></li></ul></div> </td></tr> <tr> <td><a href="/wiki/ChEBI" title="ChEBI">ChEBI</a> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><span title="www.ebi.ac.uk"><a rel="nofollow" class="external text" href="https://www.ebi.ac.uk/chebi/searchId.do?chebiId=39745">CHEBI:39745</a></span></li></ul></div> </td></tr> <tr> <td><a href="/wiki/ChemSpider" title="ChemSpider">ChemSpider</a> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><span title="www.chemspider.com"><a rel="nofollow" class="external text" href="https://www.chemspider.com/Chemical-Structure.978.html">978</a></span></li></ul></div> </td></tr> <tr> <td><a href="/wiki/DrugBank" title="DrugBank">DrugBank</a> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><span title="www.drugbank.ca"><a rel="nofollow" class="external text" href="https://www.drugbank.ca/drugs/DB02831">DB02831</a></span></li></ul></div> </td></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Gmelin_database" title="Gmelin database">Gmelin Reference</a></div> </td> <td>1999 </td></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/PubChem" title="PubChem">PubChem</a> <abbr title="Compound ID">CID</abbr></div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><span title="pubchem.ncbi.nlm.nih.gov"><a rel="nofollow" class="external text" href="https://pubchem.ncbi.nlm.nih.gov/compound/1003">1003</a></span></li></ul></div> </td></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/CompTox_Chemicals_Dashboard" title="CompTox Chemicals Dashboard">CompTox Dashboard</a> <span style="font-weight:normal">(<abbr title="U.S. Environmental Protection Agency">EPA</abbr>)</span></div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><span title="comptox.epa.gov"><a rel="nofollow" class="external text" href="https://comptox.epa.gov/dashboard/chemical/details/DTXSID40930897">DTXSID40930897</a> <span class="mw-valign-text-top noprint" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q27093789#P3117" title="Edit this at Wikidata"><img alt="Edit this at Wikidata" src="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></li></ul></div> </td></tr> <tr> <td colspan="2"><div class="collapsible-list mw-collapsible mw-collapsed" style="text-align: left;"> <div style="line-height: 1.6em; font-weight: bold; text-align:left; font-weight:normal;"><div><a href="/wiki/International_Chemical_Identifier" title="International Chemical Identifier">InChI</a></div></div> <ul class="mw-collapsible-content" style="margin-top: 0; margin-bottom: 0; line-height: inherit; list-style: none; margin-left: 0; word-break:break-all;"><li style="line-height: inherit; margin: 0"><div style="border-top:1px solid #ccc; padding:0.2em 0 0.2em 1.5em; text-align:left;"><div style="word-wrap:break-word; text-indent:-1.5em; font-size:97%; line-height:120%;">InChI=1S/H3O4P/c1-5(2,3)4/h(H3,1,2,3,4)/p-1</div><div style="word-wrap:break-word; text-indent:-1.5em; font-size:97%; line-height:120%;">Key: NBIIXXVUZAFLBC-UHFFFAOYSA-M</div></div></li></ul> </div> </td></tr> <tr> <td colspan="2"><div class="collapsible-list mw-collapsible mw-collapsed" style="text-align: left;"> <div style="line-height: 1.6em; font-weight: bold; text-align:left; font-weight:normal;"><div><a href="/wiki/Simplified_molecular-input_line-entry_system" class="mw-redirect" title="Simplified molecular-input line-entry system">SMILES</a></div></div> <ul class="mw-collapsible-content" style="margin-top: 0; margin-bottom: 0; line-height: inherit; list-style: none; margin-left: 0; word-break:break-all;"><li style="line-height: inherit; margin: 0"><div style="border-top:1px solid #ccc; padding:0.2em 0 0.2em 1.6em; word-wrap:break-word; text-indent:-1.5em; text-align:left; font-size:97%; line-height:120%;">OP(=O)(O)[O-]</div></li></ul> </div> </td></tr> <tr> <th colspan="2" style="background: #f8eaba;color:inherit; text-align: center;">Properties </th></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Chemical_formula" title="Chemical formula">Chemical formula</a></div> </td> <td><span title="Hydrogen">H</span><sub>2</sub><span title="Oxygen">O</span><sub>4</sub><span title="Phosphorus">P</span><sup>−1</sup> </td></tr> <tr> <td><a href="/wiki/Molar_mass" title="Molar mass">Molar mass</a> </td> <td><span class="nowrap"><span data-sort-value="7001969860000000000♠"></span>96.986</span> g·mol<sup>−1</sup>   </td></tr> <tr> <td><a href="/wiki/Conjugate_acid" class="mw-redirect" title="Conjugate acid">Conjugate acid</a> </td> <td><a href="/wiki/Phosphoric_Acid" class="mw-redirect" title="Phosphoric Acid">Phosphoric Acid</a> </td></tr> <tr> <th colspan="2" style="background: #f8eaba;color:inherit; text-align: center;">Related compounds </th></tr> <tr> <td><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">Related compounds</div> </td> <td><a href="/wiki/Phosphate" title="Phosphate">Phosphate</a>, <a href="/wiki/Monohydrogen_phosphate" title="Monohydrogen phosphate">Monohydrogen phosphate</a> </td></tr> <tr> <td colspan="2" style="text-align:left; background:#f8eaba; color:inherit; border:1px solid #a2a9b1;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">Except where otherwise noted, data are given for materials in their <a href="/wiki/Standard_state" title="Standard state">standard state</a> (at 25 °C [77 °F], 100 kPa).</div> <div style="margin-top: 0.3em;"></div> <div style="margin-top: 0.3em; text-align: center;"><a href="/wiki/Wikipedia:Chemical_infobox#References" title="Wikipedia:Chemical infobox">Infobox references</a></div> </td></tr> </tbody></table><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Chemical compound</div> <p><b>Dihydrogen phosphate</b> is an <a href="/wiki/Inorganic_ions" title="Inorganic ions">inorganic ion</a> with the formula [H<sub>2</sub>PO<sub>4</sub>]<sup>−</sup>. Phosphates occur widely in <a href="/wiki/Natural" class="mw-redirect" title="Natural">natural</a> systems.<sup id="cite_ref-:1_1-0" class="reference"><a href="#cite_note-:1-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p><p>These sodium phosphates are artificially used in food processing and packaging as emulsifying agents, neutralizing agents, surface-activating agents, and leavening agents providing humans with benefits. Emulsifying agents prevent separation of two ingredients in processed foods that would separate under natural conditions while neutralizing agents make processed foods taste fresher longer and lead to an increased shelf-life of these foods.<sup id="cite_ref-:1_1-1" class="reference"><a href="#cite_note-:1-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> Surface-activating agents prevent surface-tension formation on liquid-containing processed foods and finally, leavening agents are used in processed foods to aid in the expansion of yeast in baked goods.<sup id="cite_ref-:1_1-2" class="reference"><a href="#cite_note-:1-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p><p>Dihydrogen phosphate is employed in the production of pharmaceuticals furthering their importance to medical practitioners of <a href="/wiki/Gastroenterology" title="Gastroenterology">gastroenterology</a> and humans in general. In this medical discipline, sodium phosphates are used as natural laxatives.<sup id="cite_ref-:1_1-3" class="reference"><a href="#cite_note-:1-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> Other medical applications include using sodium and potassium phosphates along with other medications to increase their therapeutic effects. Inflammation, certain cancers, and ulcers can benefit from the use of combination therapy with sodium and potassium phosphates.<sup id="cite_ref-:1_1-4" class="reference"><a href="#cite_note-:1-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p><p>Potassium dihydrogen phosphate, the potassium salt, is useful to human in the form of pesticides. Potassium dihydrogen phosphate is a fungicide that is used to prevent powdery mildew on many fruits.<sup id="cite_ref-:2_2-0" class="reference"><a href="#cite_note-:2-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> Fruits that can benefit from the addition of potassium dihydrogen phosphate includes common fruits, peppers, and roses.<sup id="cite_ref-:2_2-1" class="reference"><a href="#cite_note-:2-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Structure">Structure</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Dihydrogen_phosphate&action=edit&section=1" title="Edit section: Structure"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The dihydrogen phosphate anion consists of a central <a href="/wiki/Phosphorus" title="Phosphorus">phosphorus</a> <a href="/wiki/Atom" title="Atom">atom</a> surrounded by 2 equivalent <a href="/wiki/Oxygen" title="Oxygen">oxygen</a> atoms and 2 <a href="/wiki/Hydroxy_group" title="Hydroxy group">hydroxy groups</a> in a <a href="/wiki/Tetrahedron" title="Tetrahedron">tetrahedral</a> arrangement.<sup id="cite_ref-:0_3-0" class="reference"><a href="#cite_note-:0-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> Dihydrogen phosphate can be identified as an anion, an ion with an overall negative charge, with dihydrogen phosphates being a negative 1 charge.<sup id="cite_ref-:0_3-1" class="reference"><a href="#cite_note-:0-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> Dihydrogen phosphate contains 4 H bond acceptors and 2 H bond donors,<sup id="cite_ref-:0_3-2" class="reference"><a href="#cite_note-:0-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> and has 0 rotatable bonds.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Acid-base_equilibria">Acid-base equilibria</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Dihydrogen_phosphate&action=edit&section=2" title="Edit section: Acid-base equilibria"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Dihydrogen phosphate is an intermediate in the multi-step conversion of the polyprotic <a href="/wiki/Phosphoric_acid" title="Phosphoric acid">phosphoric acid</a> to <a href="/wiki/Phosphate" title="Phosphate">phosphate</a>:<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p><p>This multistep conversion exemplifies that the dihydrogen phosphate ion is the conjugate base to phosphoric acid, while also acting as the conjugate acid to the phosphate ion.<sup id="cite_ref-:0_3-3" class="reference"><a href="#cite_note-:0-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> This means that dihydrogen phosphate can be both a hydrogen donor and acceptor. </p> <table class="wikitable"> <tbody><tr> <th>Equilibrium </th> <th>Disassociation constant, p<i>K</i><sub>a</sub><sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </th></tr> <tr> <td>H<sub>3</sub>PO<sub>4</sub> ⇌ <span class="chemf nowrap">H<span class="nowrap"><span style="display:inline-block;margin-bottom:-0.3em;vertical-align:-0.4em;line-height:1em;font-size:80%;text-align:left"><sup style="font-size:inherit;line-height:inherit;vertical-align:baseline"></sup><br /><sub style="font-size:inherit;line-height:inherit;vertical-align:baseline">2</sub></span></span>PO<span class="nowrap"><span style="display:inline-block;margin-bottom:-0.3em;vertical-align:-0.4em;line-height:1em;font-size:80%;text-align:left"><sup style="font-size:inherit;line-height:inherit;vertical-align:baseline">−</sup><br /><sub style="font-size:inherit;line-height:inherit;vertical-align:baseline">4</sub></span></span></span> + H<sup>+</sup> </td> <td>p<i>K</i><sub>a1</sub> = 2.14<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>a<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <td><span class="chemf nowrap">H<span class="nowrap"><span style="display:inline-block;margin-bottom:-0.3em;vertical-align:-0.4em;line-height:1em;font-size:80%;text-align:left"><sup style="font-size:inherit;line-height:inherit;vertical-align:baseline"></sup><br /><sub style="font-size:inherit;line-height:inherit;vertical-align:baseline">2</sub></span></span>PO<span class="nowrap"><span style="display:inline-block;margin-bottom:-0.3em;vertical-align:-0.4em;line-height:1em;font-size:80%;text-align:left"><sup style="font-size:inherit;line-height:inherit;vertical-align:baseline">−</sup><br /><sub style="font-size:inherit;line-height:inherit;vertical-align:baseline">4</sub></span></span></span> ⇌ <span class="chemf nowrap">HPO<span class="nowrap"><span style="display:inline-block;margin-bottom:-0.3em;vertical-align:-0.4em;line-height:1em;font-size:80%;text-align:left"><sup style="font-size:inherit;line-height:inherit;vertical-align:baseline">2−</sup><br /><sub style="font-size:inherit;line-height:inherit;vertical-align:baseline">4</sub></span></span></span> + H<sup>+</sup> </td> <td>p<i>K</i><sub>a2</sub> = 7.20 </td></tr> <tr> <td><span class="chemf nowrap">HPO<span class="nowrap"><span style="display:inline-block;margin-bottom:-0.3em;vertical-align:-0.4em;line-height:1em;font-size:80%;text-align:left"><sup style="font-size:inherit;line-height:inherit;vertical-align:baseline">2−</sup><br /><sub style="font-size:inherit;line-height:inherit;vertical-align:baseline">4</sub></span></span></span> ⇌ <span class="chemf nowrap">PO<span class="nowrap"><span style="display:inline-block;margin-bottom:-0.3em;vertical-align:-0.4em;line-height:1em;font-size:80%;text-align:left"><sup style="font-size:inherit;line-height:inherit;vertical-align:baseline">3−</sup><br /><sub style="font-size:inherit;line-height:inherit;vertical-align:baseline">4</sub></span></span></span> + H<sup>+</sup> </td> <td>p<i>K</i><sub>a3</sub> = 12.37 </td></tr></tbody></table> <div class="mw-heading mw-heading2"><h2 id="Examples">Examples</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Dihydrogen_phosphate&action=edit&section=3" title="Edit section: Examples"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Ammonium_dihydrogen_phosphate" title="Ammonium dihydrogen phosphate">Ammonium dihydrogen phosphate</a> ((NH<sub>4</sub>)(H<sub>2</sub>PO<sub>4</sub>))</li> <li><a href="/wiki/Monocalcium_phosphate" title="Monocalcium phosphate">Monocalcium phosphate</a> (Ca(H<sub>2</sub>PO<sub>4</sub>)<sub>2</sub>)</li></ul> <div class="mw-heading mw-heading2"><h2 id="Safety">Safety</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Dihydrogen_phosphate&action=edit&section=4" title="Edit section: Safety"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Many foods including milk, eggs, poultry, and nuts contain these sodium phosphates.<sup id="cite_ref-:1_1-5" class="reference"><a href="#cite_note-:1-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Notes">Notes</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Dihydrogen_phosphate&action=edit&section=5" title="Edit section: Notes"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output 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a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFTech" class="citation web cs1">Tech, Noah. <a rel="nofollow" class="external text" href="https://noahchemicals.com/sodium-phosphates/">"Sodium Phosphates: From Food to Pharmacology | Noah Technologies"</a><span class="reference-accessdate">. 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Retrieved <span class="nowrap">2021-03-23</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=aqion.de&rft.atitle=Phosphoric+Acid+H3PO4&rft_id=https%3A%2F%2Fwww.aqion.de%2Fsite%2F127&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADihydrogen+phosphate" class="Z3988"></span></span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPowellBrownByrneGajda2005" class="citation journal cs1">Powell, Kipton J.; Brown, Paul L.; Byrne, Robert H.; Gajda, Tamás; Hefter, Glenn; Sjöberg, Staffan; Wanner, Hans (2005). <a rel="nofollow" class="external text" href="https://doi.org/10.1351%2Fpac200577040739">"Chemical speciation of environmentally significant heavy metals with inorganic ligands. Part 1: The Hg<sup>2+</sup>, Cl<sup>−</sup>, OH<sup>−</sup>, <span class="chemf nowrap">CO<span class="nowrap"><span style="display:inline-block;margin-bottom:-0.3em;vertical-align:-0.4em;line-height:1em;font-size:80%;text-align:left"><sup style="font-size:inherit;line-height:inherit;vertical-align:baseline">2−</sup><br /><sub style="font-size:inherit;line-height:inherit;vertical-align:baseline">3</sub></span></span></span>, <span class="chemf nowrap">SO<span class="nowrap"><span style="display:inline-block;margin-bottom:-0.3em;vertical-align:-0.4em;line-height:1em;font-size:80%;text-align:left"><sup style="font-size:inherit;line-height:inherit;vertical-align:baseline">2−</sup><br /><sub style="font-size:inherit;line-height:inherit;vertical-align:baseline">4</sub></span></span></span>, and <span class="chemf nowrap">PO<span class="nowrap"><span style="display:inline-block;margin-bottom:-0.3em;vertical-align:-0.4em;line-height:1em;font-size:80%;text-align:left"><sup style="font-size:inherit;line-height:inherit;vertical-align:baseline">3−</sup><br /><sub style="font-size:inherit;line-height:inherit;vertical-align:baseline">4</sub></span></span></span> aqueous systems"</a>. <i>Pure Appl. Chem</i>. <b>77</b> (4): <span class="nowrap">739–</span>800. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.1351%2Fpac200577040739">10.1351/pac200577040739</a></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Pure+Appl.+Chem.&rft.atitle=Chemical+speciation+of+environmentally+significant+heavy+metals+with+inorganic+ligands.+Part+1%3A+The+Hg%3Csup%3E2%2B%3C%2Fsup%3E%2C+Cl%3Csup%3E%E2%88%92%3C%2Fsup%3E%2C+OH%3Csup%3E%E2%88%92%3C%2Fsup%3E%2C+%3Cspan+class%3D%22chemf+nowrap%22%3ECO%3Cspan+class%3D%22nowrap%22%3E%3Cspan+style%3D%22display%3Ainline-block%3Bmargin-bottom%3A-0.3em%3Bvertical-align%3A-0.4em%3Bline-height%3A1em%3Bfont-size%3A80%25%3Btext-align%3Aleft%22%3E%3Csup+style%3D%22font-size%3Ainherit%3Bline-height%3Ainherit%3Bvertical-align%3Abaseline%22%3E2%E2%88%92%3C%2Fsup%3E%3Cbr+%2F%3E%3Csub+style%3D%22font-size%3Ainherit%3Bline-height%3Ainherit%3Bvertical-align%3Abaseline%22%3E3%3C%2Fsub%3E%3C%2Fspan%3E%3C%2Fspan%3E%3C%2Fspan%3E%2C+%3Cspan+class%3D%22chemf+nowrap%22%3ESO%3Cspan+class%3D%22nowrap%22%3E%3Cspan+style%3D%22display%3Ainline-block%3Bmargin-bottom%3A-0.3em%3Bvertical-align%3A-0.4em%3Bline-height%3A1em%3Bfont-size%3A80%25%3Btext-align%3Aleft%22%3E%3Csup+style%3D%22font-size%3Ainherit%3Bline-height%3Ainherit%3Bvertical-align%3Abaseline%22%3E2%E2%88%92%3C%2Fsup%3E%3Cbr+%2F%3E%3Csub+style%3D%22font-size%3Ainherit%3Bline-height%3Ainherit%3Bvertical-align%3Abaseline%22%3E4%3C%2Fsub%3E%3C%2Fspan%3E%3C%2Fspan%3E%3C%2Fspan%3E%2C+and+%3Cspan+class%3D%22chemf+nowrap%22%3EPO%3Cspan+class%3D%22nowrap%22%3E%3Cspan+style%3D%22display%3Ainline-block%3Bmargin-bottom%3A-0.3em%3Bvertical-align%3A-0.4em%3Bline-height%3A1em%3Bfont-size%3A80%25%3Btext-align%3Aleft%22%3E%3Csup+style%3D%22font-size%3Ainherit%3Bline-height%3Ainherit%3Bvertical-align%3Abaseline%22%3E3%E2%88%92%3C%2Fsup%3E%3Cbr+%2F%3E%3Csub+style%3D%22font-size%3Ainherit%3Bline-height%3Ainherit%3Bvertical-align%3Abaseline%22%3E4%3C%2Fsub%3E%3C%2Fspan%3E%3C%2Fspan%3E%3C%2Fspan%3E+aqueous+systems&rft.volume=77&rft.issue=4&rft.pages=%3Cspan+class%3D%22nowrap%22%3E739-%3C%2Fspan%3E800&rft.date=2005&rft_id=info%3Adoi%2F10.1351%2Fpac200577040739&rft.aulast=Powell&rft.aufirst=Kipton+J.&rft.au=Brown%2C+Paul+L.&rft.au=Byrne%2C+Robert+H.&rft.au=Gajda%2C+Tam%C3%A1s&rft.au=Hefter%2C+Glenn&rft.au=Sj%C3%B6berg%2C+Staffan&rft.au=Wanner%2C+Hans&rft_id=https%3A%2F%2Fdoi.org%2F10.1351%252Fpac200577040739&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADihydrogen+phosphate" 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style="padding:0"><div class="mw-collapsible-content" style="overflow-x:auto"> <table class="center"> <tbody><tr style="background-color:mistyrose"> <td><a href="/wiki/Phosphoric_acid" title="Phosphoric acid">H<sub>3</sub>PO<sub>4</sub></a><br /><a href="/wiki/Monohydrogen_phosphate" title="Monohydrogen phosphate">[HPO<sub>4</sub>]<sup>2−</sup></a><br /><a class="mw-selflink selflink">[H<sub>2</sub>PO<sub>4</sub>]<sup>−</sup></a> </td> <td style="background-color:white;color:inherit;border:none"> </td> <td style="background-color:white;color:inherit;border:none" colspan="11" rowspan="3"> </td> <td style="background-color:white;color:inherit;border:none" colspan="5"> </td> <td>He </td></tr> <tr style="background-color:mistyrose;color:black;"> <td><a href="/w/index.php?title=Lithium_phosphate&action=edit&redlink=1" class="new" title="Lithium phosphate (page does not exist)">Li<sub>3</sub>PO<sub>4</sub></a> </td> <td>Be </td> <td><a href="/wiki/Boron_phosphate" title="Boron phosphate">BPO<sub>4</sub></a><br /><a href="/wiki/Borate_phosphate" title="Borate phosphate">+BO<sub>3</sub></a> </td> <td>C </td> <td><a href="/wiki/Ammonium_phosphate" title="Ammonium phosphate">(NH<sub>4</sub>)<sub>3</sub>PO<sub>4</sub></a><br /><a href="/wiki/Diammonium_phosphate" title="Diammonium phosphate">(NH<sub>4</sub>)<sub>2</sub>HPO<sub>4</sub></a><br /><a href="/wiki/Monoammonium_phosphate" class="mw-redirect" title="Monoammonium phosphate">NH<sub>4</sub>H<sub>2</sub>PO<sub>4</sub></a><br /><a href="/wiki/Nitridophosphate" title="Nitridophosphate">-N</a> </td> <td>O </td> <td><a href="/wiki/Fluoride_phosphate" title="Fluoride phosphate">+F</a> </td> <td>Ne </td></tr> <tr style="background-color:mistyrose;color:black;"> <td><a href="/wiki/Trisodium_phosphate" title="Trisodium phosphate">Na<sub>3</sub>PO<sub>4</sub></a><br /><a href="/wiki/Disodium_phosphate" title="Disodium phosphate">Na<sub>2</sub>HPO<sub>4</sub></a><br /><a href="/wiki/Monosodium_phosphate" title="Monosodium phosphate">NaH<sub>2</sub>PO<sub>4</sub></a> </td> <td><a href="/wiki/Trimagnesium_phosphate" title="Trimagnesium phosphate">Mg<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub></a> </td> <td><a href="/wiki/Aluminium_phosphate" title="Aluminium phosphate">AlPO<sub>4</sub></a> </td> <td>Si </td> <td>P </td> <td><a href="/wiki/Phosphate_sulfate" title="Phosphate sulfate">+SO<sub>4</sub></a><br /><a href="/wiki/Thiophosphate" title="Thiophosphate">-S</a> </td> <td>Cl </td> <td>Ar </td></tr> <tr style="background-color:mistyrose;color:black;"> <td><a href="/wiki/Tripotassium_phosphate" title="Tripotassium phosphate">K<sub>3</sub>PO<sub>4</sub></a><br /><a href="/wiki/Dipotassium_phosphate" title="Dipotassium phosphate">K<sub>2</sub>HPO<sub>4</sub></a><br /><a href="/wiki/Monopotassium_phosphate" title="Monopotassium phosphate">KH<sub>2</sub>PO<sub>4</sub></a> </td> <td><a href="/wiki/Tricalcium_phosphate" title="Tricalcium phosphate">Ca<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub></a> </td> <td style="background-color:white;color:inherit;border:none"> </td> <td><a href="/w/index.php?title=Scandium_phosphate&action=edit&redlink=1" class="new" title="Scandium phosphate (page does not exist)">ScPO<sub>4</sub></a> </td> <td>Ti </td> <td><a href="/w/index.php?title=Vanadium(III)_phosphate&action=edit&redlink=1" class="new" title="Vanadium(III) phosphate (page does not exist)">VPO<sub>4</sub></a> </td> <td><a href="/wiki/Chromium(III)_phosphate" title="Chromium(III) phosphate">CrPO<sub>4</sub></a> </td> <td><a href="/wiki/Manganese(II)_phosphate" title="Manganese(II) phosphate">Mn<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub></a><br /><a href="/wiki/Manganese(III)_phosphate" title="Manganese(III) phosphate">MnPO<sub>4</sub></a> </td> <td><a href="/wiki/Iron(II)_phosphate" title="Iron(II) phosphate">Fe<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub></a><br /><a href="/wiki/Iron(III)_phosphate" title="Iron(III) phosphate">FePO<sub>4</sub></a> </td> <td><a href="/wiki/Cobalt(II)_phosphate" title="Cobalt(II) phosphate">Co<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub></a> </td> <td><a href="/wiki/Nickel(II)_phosphate" title="Nickel(II) phosphate">Ni<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub></a> </td> <td><a href="/wiki/Copper(II)_phosphate" title="Copper(II) phosphate">Cu<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub></a> </td> <td><a href="/wiki/Zinc_phosphate" title="Zinc phosphate">Zn<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub></a> </td> <td><a href="/wiki/Gallium_phosphate" title="Gallium phosphate">GaPO<sub>4</sub></a> </td> <td>Ge </td> <td>As </td> <td><a href="/wiki/Selenophosphate" title="Selenophosphate">-Se</a> </td> <td>Br </td> <td>Kr </td></tr> <tr style="background-color:mistyrose;color:black;"> <td><a href="/w/index.php?title=Rubidium_phosphate&action=edit&redlink=1" class="new" title="Rubidium phosphate (page does not exist)">Rb<sub>3</sub>PO<sub>4</sub></a> </td> <td><a href="/w/index.php?title=Strontium_phosphate&action=edit&redlink=1" class="new" title="Strontium phosphate (page does not exist)">Sr<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub></a> </td> <td style="background-color:white;color:inherit;border:none"> </td> <td><a href="/wiki/Yttrium(III)_phosphate" title="Yttrium(III) phosphate">YPO<sub>4</sub></a> </td> <td><a href="/wiki/Zirconium_phosphate" title="Zirconium phosphate">Zr<sub>3</sub>(PO<sub>4</sub>)<sub>4</sub></a> </td> <td>Nb </td> <td>Mo </td> <td>Tc </td> <td>Ru </td> <td>Rh </td> <td>Pd </td> <td><a href="/wiki/Silver_phosphate" title="Silver phosphate">Ag<sub>3</sub>PO<sub>4</sub></a> </td> <td><a href="/w/index.php?title=Cadmium_phosphate&action=edit&redlink=1" class="new" title="Cadmium phosphate (page does not exist)">Cd<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub></a> </td> <td><a href="/w/index.php?title=Indium(III)_phosphate&action=edit&redlink=1" class="new" title="Indium(III) phosphate (page does not exist)">InPO<sub>4</sub></a> </td> <td>Sn </td> <td><a href="/wiki/Antimony_orthophosphate" title="Antimony orthophosphate">SbPO<sub>4</sub></a><br /><a href="/wiki/Phosphatoantimonate" title="Phosphatoantimonate">-SbO<sub>4</sub></a> </td> <td>Te </td> <td>I </td> <td>Xe </td></tr> <tr style="background-color:mistyrose;color:black;"> <td><a href="/w/index.php?title=Caesium_phosphate&action=edit&redlink=1" class="new" title="Caesium phosphate (page does not exist)">Cs<sub>3</sub>PO<sub>4</sub></a> </td> <td><a href="/w/index.php?title=Barium_phosphate&action=edit&redlink=1" class="new" title="Barium phosphate (page does not exist)">Ba<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub></a> </td> <td style="background-color:white;color:inherit;border:none">* </td> <td><a href="/w/index.php?title=Lutetium(III)_phosphate&action=edit&redlink=1" class="new" title="Lutetium(III) phosphate (page does not exist)">LuPO<sub>4</sub></a> </td> <td>Hf </td> <td>Ta </td> <td>W </td> <td>Re </td> <td>Os </td> <td>Ir </td> <td>Pt </td> <td><a href="/wiki/Gold(III)_phosphate" title="Gold(III) phosphate">AuPO<sub>4</sub></a> </td> <td>Hg </td> <td><a href="/w/index.php?title=Thallium(I)_phosphate&action=edit&redlink=1" class="new" title="Thallium(I) phosphate (page does not exist)">Tl<sub>3</sub>PO<sub>4</sub></a> </td> <td><a href="/wiki/Lead(II)_phosphate" title="Lead(II) phosphate">Pb<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub></a> </td> <td><a href="/wiki/Bismuth_phosphate" class="mw-redirect" title="Bismuth phosphate">BiPO<sub>4</sub></a> </td> <td>Po </td> <td>At </td> <td>Rn </td></tr> <tr style="background-color:mistyrose;color:black;"> <td>Fr </td> <td>Ra </td> <td style="background-color:white;color:inherit;border:none">** </td> <td>Lr </td> <td>Rf </td> <td>Db </td> <td>Sg </td> <td>Bh </td> <td>Hs </td> <td>Mt </td> <td>Ds </td> <td>Rg </td> <td>Cn </td> <td>Nh </td> <td>Fl </td> <td>Mc </td> <td>Lv </td> <td>Ts </td> <td>Og </td></tr> <tr> <td style="background-color:white;color:inherit;border:none" colspan="2" rowspan="3"> </td> <td style="background-color:white;color:inherit;border:none" colspan="20">  </td></tr> <tr style="background-color:mistyrose;color:black;"> <td style="background-color:white;color:inherit;border:none">* </td> <td><a href="/w/index.php?title=Lanthanum(III)_phosphate&action=edit&redlink=1" class="new" title="Lanthanum(III) phosphate (page does not exist)">LaPO<sub>4</sub></a> </td> <td><a href="/w/index.php?title=Cerium(III)_phosphate&action=edit&redlink=1" class="new" title="Cerium(III) phosphate (page does not exist)">CePO<sub>4</sub></a> </td> <td><a href="/wiki/Praseodymium(III)_phosphate" title="Praseodymium(III) phosphate">PrPO<sub>4</sub></a> </td> <td><a href="/wiki/Neodymium(III)_phosphate" title="Neodymium(III) phosphate">NdPO<sub>4</sub></a> </td> <td><a href="/wiki/Promethium(III)_phosphate" title="Promethium(III) phosphate">PmPO<sub>4</sub></a> </td> <td><a href="/wiki/Samarium(III)_phosphate" title="Samarium(III) phosphate">SmPO<sub>4</sub></a> </td> <td><a href="/wiki/Europium(III)_phosphate" title="Europium(III) phosphate">EuPO<sub>4</sub></a> </td> <td><a href="/w/index.php?title=Gadolinium(III)_phosphate&action=edit&redlink=1" class="new" title="Gadolinium(III) phosphate (page does not exist)">GdPO<sub>4</sub></a> </td> <td><a href="/w/index.php?title=Terbium(III)_phosphate&action=edit&redlink=1" class="new" title="Terbium(III) phosphate (page does not exist)">TbPO<sub>4</sub></a> </td> <td><a href="/wiki/Dysprosium(III)_phosphate" title="Dysprosium(III) phosphate">DyPO<sub>4</sub></a> </td> <td><a href="/w/index.php?title=Holmium(III)_phosphate&action=edit&redlink=1" class="new" title="Holmium(III) phosphate (page does not exist)">HoPO<sub>4</sub></a> </td> <td><a href="/w/index.php?title=Erbium(III)_phosphate&action=edit&redlink=1" class="new" title="Erbium(III) phosphate (page does not exist)">ErPO<sub>4</sub></a> </td> <td><a href="/w/index.php?title=Thulium(III)_phosphate&action=edit&redlink=1" class="new" title="Thulium(III) phosphate (page does not exist)">TmPO<sub>4</sub></a> </td> <td><a href="/w/index.php?title=Ytterbium(III)_phosphate&action=edit&redlink=1" class="new" title="Ytterbium(III) phosphate (page does not exist)">YbPO<sub>4</sub></a> </td></tr> <tr style="background-color:mistyrose;color:black;"> <td style="background-color:white;color:inherit;border:none">** </td> <td><a href="/wiki/Actinium(III)_phosphate" title="Actinium(III) phosphate">AcPO<sub>4</sub></a> </td> <td><a href="/w/index.php?title=Thorium_phosphate&action=edit&redlink=1" class="new" title="Thorium phosphate (page does not exist)">Th<sub>3</sub>(PO<sub>4</sub>)<sub>4</sub></a> </td> <td>Pa </td> <td><a href="/wiki/Uranyl_metaphosphate" title="Uranyl metaphosphate">U(PO<sub>4</sub>)<sub>2</sub></a> </td> <td>Np </td> <td><a href="/w/index.php?title=Plutonium(III)_phosphate&action=edit&redlink=1" class="new" title="Plutonium(III) phosphate (page does not exist)">PuPO<sub>4</sub></a> </td> <td><a 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