Shelf life

3 years

Test items

Specifications 

Results 

Characters 

White crystal or crystalline powder slightly

Complies 

Soluble in water and Freely soluble in alcohol(96%)

Complies 

At about 143℃

142.8℃

Identification A

Sample Infrared absorption spectropho-tometry Complies with Aspirin CRS

Complies 

Identification B

A crystalline precipitate is formed, Melting point is 156-161℃

Postive 

156.4-160.1℃

Appearance of solution

Solution is clear and colourless

Solution is clear and colourless

Related substances

Any impurities not more than 0.1%

0.03%

The sum of impurities not more than 0.25%

0.06%

Heavy metals 

≤20ppm

＜20ppm

NMT20ppm

Loss on drying

≤0.5%

0.03%

NMT0.5%

Sulphated ash

≤0.1%

0.03%

NMT0.1%

Assay (dried substance)

Contains C₉H₈O₄ 99.5% TO 101.0%

99.70%

Conclusion: The product comply with the requirements of BP2010