Salicylic acid Medical Grade

PRODUCT   NAME

Salicylic  Acid

SYNONYMS

Dihydroxy-benzoic acid

CAS NO.

69-72-7

CHEMICAL   STRUCTURE

APPLICATION

API

OUTSIDE   PACKING

25KG/DRUM

INSIDE   PACKING

25KG/BAG

ITEM

STANDARD

Appearance

White or almost white, crystalline   powder or colourless crystals

Identification   A. IR-Spectrum

Should   be complied with Reference Spectrum

Identification   B. Liquid chromatography

The   retention time of the major peak of the Sample solution corresponds to that   of the Standard solution

Loss   on drying

≤0.5%

Residue   on ignition

≤0.05%

Chloride

≤0.014%

Sulfate  

≤0.02%

Heavy   metals

≤20   µg/g

Related   substances 4-hydroxybenzoic acid （%）

≤0.1

4-hydroxyisophthalic   acid（%）

≤0.05

phenol   （%）

≤0.02

Other   impurities（%）

≤0.05

Total   impurities（%）

≤0.2

Assay（HPLC）

98.0%—102.0%