Salicylic Acid;CAS 69-72-7

Item

Specification

Appearance

A white, or almost white, crystalline powder

or white or colourless, acicular crystals

Solution

Clear and colourless

Characters

Slightly soluble in water, freely soluble in ethanol(96%), sparingly soluble in methylene chloride

Identification

Melting point 158℃-161℃

The IR spectrum of sample complies with Salicylic acid CRS

Loss on drying

≤0.5%

Residue on ignition

≤0.05%

Heavy metals

≤20ppm

Sulfates

≤200ppm

Chlorides

≤100ppm

Related substances

4-Hydroxybenzoic acid ≤0.1%

4-Hydroxyisophthalic acid ≤0.05%

Phenol ≤0.02%

Any other impurities ≤0.05%

Total impurities ≤0.2%

Assay(on dried basis)

Contains C₇H₆O₃ 99.0%-100.5%