tolfenamic acid cas 13710-19-5

Description

Tolfenamic acidQuick Details
Chemical Name:Tolfenamic acid
CAS: 13710-19-5
Molecular Fomula:C14H12ClNO2
Molecular Weight:261.7
Chemical Structure:
Appearance: White or slightly yellow, crystalline powder
Purity: 99.0~101.0%
Tolfenamic acidTypical Properties

Inspect Item
Specification
Results

Appearance
White or slightly yellow, crystalline powder
Conforms

Solubility
Practically insoluble in water, soluble in dimethylformamide, sparingly soluble in ethanol and in methylene chloride
Conforms

Identification
A. Light absorption: the ratio of the absorbance measured at the maximum at 286nm to that maximum at 345nm should be 1.2 to 1.4
Conforms

B. IR absorption spectrophotometry should be conformed
1.2

C. TLC chromatography (245nm) should be conformed
Conforms

Melting point
210~214℃
212.1~212.6℃

Related substances
Impurity A<0.1%;Impurity B<0.05% Conforms Any other impurity<0.1% Conforms Total impurity<0.5% Conforms Copper Not more than 10ppm Conforms Loss on drying Not more than 0.5% 0.20% Sulphated ash Not more than 0.1% <0.1% Assay (basis on dry) 99.0~101.0% 99.70% Conclusion The results conforms with EP6.0 standards Tolfenamic acid Usage This product is used in the synthesis of non-steroidal anti-inflammatory analgesics. Tolfenamic acid Packaging 25 kg/drum.