Salicylic Acid (2-Hydroxybenzoic Acid) is a white acicular crystal or crystalline powder, odorless or with a slight phenolic odor. It is weakly acidic and liposoluble. Stable in air, but liable to discolor gradually upon exposure to light. As a key intermediate in organic synthesis, pharmaceutical and chemical industries, it is widely used in pharmaceuticals, cosmetics, preservatives and fine chemical fields.
Physical & Chemical Properties
Molecular FormulaC7H6O3
Density:1.4g/cm³g/cm³
Boiling Point:256°C
Solubility:
Slightly soluble in water; freely soluble in organic solvents such as ethanol, acetone, diethyl ether and benzene.
Molecular Weight:138.1g/mol
Flash Point:157℃
Melting Point:159℃
Uses
1. Pharmaceutical Industry:Synthesis of antipyretic, analgesic, anti-inflammatory and anti-rheumatic drugs such as aspirin (acetylsalicylic acid), sodium salicylate, bismuth salicylate, etc.
2. Cosmetics & Skin Care Products:Used as a liposoluble exfoliant, antibacterial and anti-inflammatory agent for acne treatment, oil control, blackhead dissolution and pore congestion improvement.
3. Industry & Chemical Engineering:Used as dye intermediate, food preservative, rubber antioxidant, and chemical analytical reagent (for metal ion detection).
4. Agriculture:Plant growth regulator with effects of inducing disease resistance and promoting flowering.
Safety, Security & Risk
Physical hazards
Powder or granular form may form dust explosive mixtures when mixed with air.
Chemical hazards
Aqueous solution is a weak acid. Reacts with strong oxidizing agents, fluorine, iodine, lead and iron.When heated, it decomposes, producing carbon dioxide and other gaseous products.