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Disodium phosphate (DSP), or disodium hydrogen phosphate, or sodium phosphate dibasic, is an inorganic compound with the chemical formula Na 2 H P O 4. It is one of several sodium phosphates. The salt is known in anhydrous form as well as hydrates Na 2 HPO 4 ·nH 2 O, where n is 2, 7, 8, and 12. All are water-soluble white powders.
monosodium phosphate monohydrate: NaH 2 PO 4 ·H 2 O: 10049-21-5 monosodium phosphate dihydrate: NaH 2 PO 4 ·2H 2 O: 13472-35-0 disodium phosphate (anhydrous) Na 2 HPO 4: 7558–79–4 disodium phosphate dihydrate: Na 2 HPO 4 ·2H 2 O: 10028-24-7 disodium phosphate heptahydrate: Na 2 HPO 4 ·7H 2 O: 7782–85–6 disodium phosphate octahydrate ...
Dihydrogen phosphate is an inorganic ion with the formula [H 2 PO 4] −.Phosphates occur widely in natural systems. [1]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.
McIlvaine buffer is a buffer solution composed of citric acid and disodium hydrogen phosphate, also known as citrate-phosphate buffer. It was introduced in 1921 by the United States agronomist Theodore Clinton McIlvaine (1875–1959) from West Virginia University , and it can be prepared in pH 2.2 to 8 by mixing two stock solutions.
Trisodium phosphate is produced by neutralization of phosphoric acid using sodium carbonate, which produces disodium hydrogen phosphate. The disodium hydrogen phosphate is reacted with sodium hydroxide to form trisodium phosphate and water. Na 2 CO 3 + H 3 PO 4 → Na 2 HPO 4 + CO 2 + H 2 O Na 2 HPO 4 + NaOH → Na 3 PO 4 + H 2 O
The phosphate ion has a molar mass of 94.97 g/mol, and consists of a central phosphorus atom surrounded by four oxygen atoms in a tetrahedral arrangement. It is the conjugate base of the hydrogen phosphate ion H(PO 4) 2−, which in turn is the conjugate base of the dihydrogen phosphate ion H 2 (PO 4) −
Disodium hydrogen phosphite is the name for inorganic compounds with the formula Na 2 HPO 3 •(H 2 O) x. The commonly encountered salt is the pentahydrate. [1] A derivative of phosphorous acid (HP(O)(OH) 2), it contains the anion HPO 3 2−. Its common name suggests that it contains an acidic hydrogen atom, as in sodium hydrogen carbonate ...
Monosodium phosphate (MSP), also known as monobasic sodium phosphate and sodium dihydrogen phosphate, is an inorganic compound with the chemical formula Na H 2 P O 4. It is a sodium salt of phosphoric acid. It consists of sodium cations (Na +) and dihydrogen phosphate anions (H 2 PO − 4). One of many sodium phosphates, it is a common ...