Aspirin

Appearance

White crystal or crystalline powder

Identification A. Ferric Acid reaction test

Complies

Identification B.IR-Spectrum

Complies

Loss on drying

≤0.5%

Readily carboaizable substances

≤Fluid Q

Residue on ignition

≤0.05%

Substances Insoluble in Sodium Carbonate TS

Clear

Chloride

≤0.014%

Sulfate

≤0.04%

Heavy metals

≤10ug/g

Limit of free salicylic acid

≤0.1%

Assay

99.5%~100.5%