Dibasic Calcium Phosphate Anhydrous B.p.

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Sr.No Test Specifications
1 Appearance White, crystalline powder or colourless crystals.
2 Solubility Practically insoluble in water. It dissolves in dilute hydrochloric acid and in dilute nitric acid.
3 Identification A) It complies with the limits of the assay.
B) The solution gives reaction (b) of phosphates .
C) The solution gives reaction (b) of calcium.
4 Carbonates No effervescence is produced.
5 Chlorides Maximum 330 ppm.
6 Fluorides Maximum 100 ppm.
7 Sulphates Maximum 0.5% w/w.
8 Arsenic Maximum 10 ppm.
9 Barium To comply the test
10 Iron Maximum 400 ppm.
11 Heavy metals Maximum 40 ppm.
12 Loss on drying Maximum 2.0% w/wt, 1.0 g at 150 A C for 2 h.
13 ASSAY (By Titrimetry) 98.0% w/w to 101.0% w/w (dried substance).