Test Item

Standard Specifications

Characteristics

White, hard particles, hygroscopic.

Freely soluble in water, soluble in alcohol.

Identification

Positive

Acidity/alkalinity

Conform

Appearance of solution

Conform

Magnesium and alkali metals

Not more than 0.5%

Iron

Not more than 0.001%

Barium

Conform

Aluminium

Not more than 0.0001%

Sulphate

Not more than 0.03%

Heavy metals

Not more than 0.002%

Bacterial endotoxins

Not more than 0.25EU/g

Microbial limit

Not more than 100 cfu/g

Assay

97.0%-103.0%