SODIUM PHOSPHATE MONOBASIC AR (DIHYDRATE)

SODIUM PHOSPHATE MONOBASIC AR (DIHYDRATE)

Article No.	Grade	Purity	Cas no.	Molecular Formula	Molecular Weight	H.S. Code	Shelf Life
S0191305000	AR	99%	13472-35-0	NaH₂PO_4.2H₂O	156.01	2835.2200	60 Months

Physical Properties

Physical state at 20 °C

Solid

Colour

White crystalline

Odour

Odorless

pH value

4.2 - 4.5

Melting Point/ Freezing point [°C]

60°C

Density [g/cm3]

1.92

Solubility in water [% weight]

Soluble in water

Specifications

Appearance:	Colorless crystals or white crystalline powder
Chloride (Cl):	Max 0.001%
Sulphate (SO4):	Max 0.005%
Heavy metal (as Pb):	Max 0.0005%
pH (1% solution in water):	4.1-4.7
Arsenic (As):	Max 0.0002%
Iron (Fe):	Max 0.001%
Insoluble matter in water:	Max 0.01%
Assay:	99.0 - 100.5%
Substance reducing KMnO4 (as O):	Passes test
Calcium (Ca):	Max 0.002%
Magnesium (Mg):	Max 0.001%
Appearance of solution:	Passes test
Potassium (K):	Max 0.005%
Aluminium, calcium and related elements:	Passes test
Identity (acc. to pharmacopoeias):	Passes test
Loss on drying (at 130°C):	21.5 - 24.0%
pH (5% solution in water; 20°C):	4.2-4.5
pH (5.7% solution in water):	4.1-4.5