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Dihydrogen phosphate
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<p>Dihydrogen phosphate is an <a href="/facts/Inorganic_ions/WCgKh7lb">inorganic ion</a> with the formula [H2PO4]−. Phosphates occur widely in <a href="/facts/Natural/YVJharv5">natural</a> systems. Perhaps the most common salt of dihydrogen phosphate is <a href="/facts/Sodium_dihydrogen_phosphate/v1o4fvpj">sodium dihydrogen phosphate</a>. It is used in <a href="/facts/Animal_feed/3pYmdSFB">animal feed</a>, <a href="/facts/Fertilizer/ysh3r6NJ">fertilizer</a>, <a href="/facts/Buffer_solution/zrLz9eaa">buffer</a> (in food), and treating metal surfaces. </p>