DiCalcium Phosphate Dihydrate BP

TESTS

SPECIFICATION

Description

White or almost white, crystalline granules

Solubility

Practically insoluble in water & ethanol it dissolves in dilute hydrochloric acid and dilute nitric acid

Identification A, B

Pass the test

Clarity of solution

Clear & colorless

Loss on ignition (800-825 C)

24.5-26.5%

Carbonate

No effervescence should be produced with HCl

Sulfates

Max 0.5%

Acid insoluble matter

Max. 0.1%

Assay

98.0% to 105.0%

Chloride

Max 0.25%

Fluoride

Max 50 ppm

Barium

No turbidity produced within 10 min.

Arsenic

Max. 3 ppm

Heavy metals

Max. 40 ppm

Iron

Max. 400 ppm

Mono Calcium & Tri calcium phosphate

11.0-15.5 ml

Proteinous impurities

To pass the test

Reducing Substance

To pass the test

Nitrate

To pass the test