White powder

Item Index
GB6226-86 USP27 BP CP2000
C 6 H 10 CaO 6 % ≥ 98.0 98.0-101.0 98.0-102.0 98.0-103.0
Water solution test Pass the test -- -- -- --
Loss on drying % Meet the requirements 22.0-27.0 22.0-27.0 Pass the test
Free acid ≤ 0.45 % -- Meet the requirements --
Free alkali Meet the requirements -- Meet the requirements --
Volatile fatty acid Meet the requirements Meet the requirements Meet the requirements --
Arsenic ≤ 0.0003% -- -- 0.0002%
Heavy metals ≤ 0.002% 0.002% 20ppm 10ppm
Magnesium and alkali salts ≤ % 1.0 1.0 1.0 --
Clarity and color of solution -- -- Meet the requirements --
Barium -- -- Meet the requirements --
Iron ≤ -- -- 50ppm 0.005%
Chloride ≤ -- -- 200ppm 0.05%
Sulfate ≤ -- -- 400ppm 0.075%
Organic volatile impurities -- Meet the requirements -- --
L(+)Stereochemical purity ≥ 97.0% -- -- --