Monosodium phosphate

Monosodium phosphate
Monosodium phosphate
Identifiers
CAS number 7558-80-7 YesY
PubChem 24204
ChemSpider 22626 YesY
ChEBI CHEBI:37585 YesY
Jmol-3D images Image 1
Properties
Molecular formula NaH2PO4
Molar mass 119.98 g/mol
Appearance White powder or crystals
Solubility in water 59.9 g/100 mL (0°C)
Hazards
EU Index Not listed
NFPA 704
NFPA 704.svg
0
1
0
Flash point Non-flammable
Related compounds
Other cations Monopotassium phosphate
Monoammonium phosphate
Related compounds Disodium phosphate
Trisodium phosphate
 YesY phosphate (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Monosodium phosphate (NaH2PO4), also known as anhydrous monobasic sodium phosphate is a chemical compound of sodium with a phosphate counterion. It is used as a laxative and, in combination with other sodium phosphates, as a pH buffer.

The pKa is 6.8-7.20 (depending on the physicochemical characteristics during pKa determination)[1]. The sodium chloride equivalent value, or E-Value, is 0.49. It is soluble in 4.5 parts water. It is most commonly available as colorless crystals or a white powder. It is insoluble in alcohol. It is also formed when a sodium halide compound reacts with phosphoric acid.


Notes


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Look at other dictionaries:

  • monosodium phosphate — noun : sodium phosphate 1a …   Useful english dictionary

  • Phosphate — A form of phosphoric acid. Calcium phosphate makes bones and teeth hard. * * * 1. A salt or ester of phosphoric acid. For individual phosphates not listed here, see under the name of the base. 2. The trivalent ion, PO43−. bone p. SYN: tribasic… …   Medical dictionary

  • phosphate buffer — a buffer system composed of acid phosphate and sodium or potassium salts, e.g., monosodium and disodium acid phosphate; in the body, it is important in regulating the pH of the renal tubular fluids …   Medical dictionary

  • Trisodium phosphate — Not to be confused with Sodium triphosphate. Trisodium phosphate[1] …   Wikipedia

  • Disodium phosphate — IUPAC name Sodium hydrogen phosphate …   Wikipedia

  • Monopotassium phosphate — IUPAC name Potassium dihydrogen phosphate …   Wikipedia

  • Ammonium dihydrogen phosphate — Ammonium dihydrogen phosphate[1] …   Wikipedia

  • monobasic sodium phosphate — n SODIUM PHOSPHATE (1) * * * [USP] the monohydrate, dihydrate, or anhydrous monosodium salt of phosphoric acid; used in buffer solutions. Used alone or in combination with other phosphate compounds, it is given intravenously as an electrolyte… …   Medical dictionary

  • Список пищевых добавок E300-E399 — E300 E399 Пищевые добавки. Группа антиоксидантов, регуляторов кислотности. Индекс Название вещества Английское название E300 Аскорбиновая кислота (Витамин C) Ascorbic acid (Vitamin C) E301 …   Википедия

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