Property:
Colorless columnar or granular particles. A bitter salty. The relative density 1.67. In dry air weathering. Melting point 1124 ℃ (no water content), soluble in water, soluble in ethanol, glycerin, insoluble in acetone.
Application:
Used as an analytical reagent, such as for sulfate precipitation agent. Also used in medicine, printing and dyeing, papermaking, ceramics and leather industry.
Test standard:
Test items |
Specification |
||
BP2015 |
USP35 |
CP2015 |
|
Appearance |
White powder |
White powder |
White powder |
Assay |
62.0~70.0% |
62.0~70.0% |
62.0~70.0% |
Acidity |
Conform |
Conform |
Conform |
Insoluble matters |
Conform |
Conform |
Conform |
Chloride |
≤0.04% |
≤0.04% |
≤0.04% |
Iron |
≤0.003% |
≤0.003% |
≤0.003% |
Heavy metals |
≤0.0015% |
≤0.0015% |
≤0.0015% |
Arsenic |
≤0.0003% |
≤0.0003% |
≤0.0003% |
Storage:
Store in a cool, dry and well ventilated place. Keep away from incompatible substances. Keep container closed.