Items

Standard

Result

Identification

A: The infrared absorption and melting range;

Meets A, B and D examine

B: The tests of Sodium

Description

White crystalline powder

Meets

Apperance of solution

clear, not more than pale yellow

Meets

Alkalinity

pH=9.6~10.5

pH 10.2

Loss on drying

≤0.5%

0.10%

Selenium

≤0.003%

<0.003%

Heavy Metals

≤0.002%

<0.002%

Assay

99.0%~100.5% (Dried basis)

99.7% (Dried basis)