tolfenamic acid cas 13710-19-5

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.

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