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Sodium dihydrogen phosphate dihydrate

pharmaceutical raw materials
Sodium dihydrogen phosphate dihydrate structure

Sodium dihydrogen phosphate dihydrate 

structure
  • CAS No:

    13472-35-0

  • Formula:

    H3O4P.2H2O.Na

  • Chemical Name:

    Sodium dihydrogen phosphate dihydrate

  • Synonyms:

    Phosphoric acid,sodium salt,hydrate (1:1:2);Phosphoric acid,monosodium salt,dihydrate;Sodium dihydrogen phosphate dihydrate;Monosodium phosphate dihydrate;Sodium phosphate (NaH2PO4) dihydrate;Monosodium dihydrogen phosphate dihydrate;53807-02-6

  • Categories:

    Cosmetic Ingredient  >  Anti-seborrheic

Description

White crystalline solid. The USP 32 states that monobasic sodium phosphate contains one or two molecules of water of hydration or is anhydrous. The hydrated forms of monobasic sodium phosphate occur as odorless, colorless or white, slightly deliquescent crystals. The anhydrous form occurs as a white crystalline powder or granules. Sodium Dihydrogen Phosphate occurs as two forms: the crystal form (dihydrate) called Sodium Dihydrogen Phosphate (crystal) and anhydrous form called Sodium Dih.

Sodium dihydrogen phosphate dihydrate Basic Attributes

156.01

155.98000

231-449-2

2835 22 00

Characteristics

82.6

-0.61900

White Solid

1,915 g/cm 3

60 °C

158ºC at 760 mmHg

1.4629

H2O: soluble

Store at +5°C to +30°C.

LD50 orally in Rabbit: 8290 mg/kg LD50 dermal Rabbit > 7940 mg/kg

Safety Information

NONH for all modes of transport

1

36-36/37/38

39-26-24/25-36

WA1900500

Xi

Aqueous solutions are stable and may be sterilized by autoclaving.
Monobasic sodium phosphate should be stored in an airtight container in a cool, dry place.

Stable.

Sodium dihydrogen phosphate dihydrate Use and Manufacturing

Methods of Manufacturing

Use the neutralization method. It is obtained by neutralizing phosphoric acid with soda ash or sodium hydroxide: adding sodium hydroxide or soda ash to concentrated phosphoric acid to control the pH to 4.4-4.6. The neutralized solution is filtered, concentrated, and then cooled to crystallize below 41°C. Centrifuged and dried products

Uses

Monobasic sodium phosphate is used in a wide variety of pharmaceutical formulations as a buffering agent and as a sequestering agent. Therapeutically, monobasic sodium phosphate is used as a mild saline laxative and in the treatment of hypophosphatemia.
Monobasic sodium phosphate is also used in food products, for example, in baking powders, and as a dry acidulant and sequestrant.

Material

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