How much do you know about the sublimation of salicylic acid and its color changes?
Release Date:
2024-10-21
How much do you know about the sublimation of salicylic acid and its color changes?
Sublimation of salicylic acid yields white blocks and powder, which may exhibit a slight yellowish or pale pink tinge; it is odorless, with a mildly sweet taste that turns pungent. It remains unchanged upon exposure to air. Above 76°C, it sublimes under atmospheric pressure; when heated at atmospheric pressure, it readily undergoes decarboxylation to form phenol and carbon dioxide. Its aqueous solution is acidic, and it gives a purple color with FeCl3. The substance is slightly soluble in water, soluble in boiling water, readily soluble in ethanol, and sparingly soluble in chloroform.
Product Name: Sublimation Salicylic Acid
English name: Salicylic acid
Alternative name: Salicylic acid, willow acid
Specification: Sublimation Grade
Chemical name: o-Hydroxybenzoic acid
Chemical formula: C7H6O3
Physicochemical properties:
Specification: (Q/32012115HF001-2004)
Appearance: White lumps and powder, with a slight pale pink tinge permitted.
CAS Number: 69-72-7
Content: ≥99.2%
Melting point: ≥158°C
Phenol content: ≤0.20%
Applications: In the pharmaceutical industry, it is used to manufacture antipyretic, analgesic, anti-inflammatory, and diuretic drugs; in the dye industry, it serves as a raw material for azo direct dyes and acid mordant dyes; it is also employed in the production of fragrances, among other uses.
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