ANALYSIS

SPECIFCATION

Appearance

White crystals or
crystalline powder

Specific optical rotation[a]_D²⁰

+20.7^o ~ +21.5^o

Transmittance

≥98.0%

pH(1.0g/20ml)

5.0~6.0

Heavy Metal

≤10ppm

Loss on Drying

≤0.40%

Residue on Ignition

≤0.10%

Chloride (as Cl)

19.0 ~ 19.6%

Sulfate (as SO₄)

≤0.02%

Ammonium (as NH4)

≤0.02%

Iron(as Fe)

≤10ppm

Arsenic (as As)

≤1ppm

Organic Volatile Impurities

Should meet the requirement

Assay

98.5~100.5%