analgesic-antipyretic intermediate Salicylic acid 69-72-7

Details:

MEDICINAL SALICYLIC ACID   CAS No. 69-72-7
Synonyms: 
 2-hydroxybenzoic acid；orthohydroxybenzoic acid
Structural Formula:
             
Molecular Formula: C7H6O3              Molecular Weight : 138.12
Physical and chemical Properties
A white crystalline powder or white or colorless aclcular crystals. Sweet first and then hot, no
chemical change in the air. Atmospherically sublimation temperature over 76°C. Easily to
decarboxylate and change into phenol and dioxide when heated atmospherically. Freely
soluble in alcohol and in ether, sparingly soluble in methylene chloride slightly soluble in
water. It’s aqueous solution appears acid reaction, becomes purple with FeCl3.
Quality Standard BP98/USP24

Usage
Medicine of disinfection and antiseptic for dissolving skin cutin hyperplasia and skin mould
infection. It is widely used in pharmaceuticals, food, fragrances,agrochemicals and dyestuffs.
It is also used in cosmetics, rubber and plastic additives.
Packing
Packing in polypropylene knitted bag attache with paper polyethylene plastic bag inside. Net weight 25kg.
Storage
Sealed container in dry and ventilated place, kept away from moisture, exploder and sunlight.

1. Chemical Name: Ortho hydroxy benzoic acid
Common Name: Salicylic acid
Chemical Formula: C7H6O3

2. Physicochemical Properties
This product is light pink to light brown crystalline powder, odorless, slightly sweet first and then spicy. It changes little in the air and shall sublimate under constant atmospheric pressure when the temperature is below 76 ° C. Being heated under constant atmospheric pressure, the product is easy to decarboxylate and turns into phenol and carbon dioxide. Its solution is acid and turns purple meeting FeCl3. It is slightly soluble in water, soluble in boiling water, easily soluble in ethanol or ether and slightly soluble in chloroform.

3. Industrial Grade Specifications: (HG/T3398-3003)
Appearance: Light pink to light brown crystalline powder
Salicylic acid content,% ≥ 99.00
Initial melting point of the dry products,% ≥ 156.0
Phenol content,% ≤ 0.20
Ash content,% ≤ 0.30