Specificity: White, monoclinic crystalline powder; odourless; tasteless. Soluble in diluteHydrochloric, Nitric and acetic acid slightly soluble in water, insoluble in ethanol relative 2.32,steady in air, when heated to 75 ℃。
It may lose crystal water, convert to Anhydrous.
Quality index：
Quality index：
Name of index | GB1889-92 |
Appearance | 白色粉末 |
Content(as CaHPO4· 2H2O),% | 98.0-103.0 |
Fluoride(F), ≤% | 0.005 |
Loss on ignition , ≤% | 24.5-26.5 |
Heavy metals(as Pb),≤ % | 0.001 |
Arsenic, ≤% | 0.0002 |
Hydrochloric acid insoluble, ≤% | 10.0 |