Chemical name: o-Hydroxybenzoic acid
Popular name: Salicylic Acid, Liu acid
Molecular Formula: C7H6O3
II. Physical and chemical properties:
White block or powder without the smell, could also be yellowish or slight pink, sweet first and the pungent. No chemical change in the air. Below 760C under atmospheric pressure, it can sublimate. After being heated under atmospheric pressure, it's easy to decarboxylate to be phenol and carbon dioxide. Its aqueous solution appears acid reaction. It turns to purple with FeCI3. It is slightly soluble in water and dissloves in boiling water; it is very soluble in ethanol and ether and slightly dissolved in chloroform.
III. Specifications: (HG2-303-80)
Appearance: White block or powder, could also be yellowish or slight pink
Salicylic acid content:% ≥ 99.00
Initial melting point 0C ≥ 156.0
Moisture content% ≤ 0.20
Easy carbonization is no deeper than the 6th
No. Of black spots ≤ 12
No. Of foreign bodies ≤ 5
Medicine of disinfection and antiseptie for dissolving skin cutin hyperplasia and skin mould infection. To use it to confect elixir for external use, that can treat keratinocytes, ringworm and so on.
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