I. Chemical name: o-hydroxybenzoic acid
Common name: salicylic acid
Chemical formula: C7H6O3
II. Physical and chemical properties
This product is light pink to light brown crystalline powder, odorless, slightly sweet and then turned to pungent, no change in the air, can be sublimated under 76°C under normal pressure, atmospheric pressure heating easy decarboxylation into phenol and carbon dioxide, in which the solution is acidic reaction, and FeCl3 is purple, this product is slightly soluble in water, soluble in boiling water, soluble in ethanol or ether, slightly soluble in chloroform.
III, the physical properties of salicylic acid: 1, the flash point of 157 degrees Celsius
2, salicylic acid has a good refractive index, generally 1600
3, Salicylic acid has a life point of 70oC.
4, salicylic acid shape is divided into powder and crystal, the color is generally white
5. Salicylic acid can be dissolved in water or ethanol ether
IV, Chemical properties of salicylic acid
1, relatively stable at room temperature. It decomposes into phenol and carbon dioxide when heated
2. Sodium salicylate has acidity
V, Use of salicylic acid
Salicylic acid can be used as a fluorescent indicator
2, salicylic acid is widely used in the rubber industry, can be used as a UV absorber and foaming agent
3. Salicylic acid is also widely used in tungsten ion preservatives
4, salicylic acid can be used as an additive in the electrolyte
Application of salicylic acid in cosmetics: Because salicylic acid has certain irritation, it can be used as an additive of toilet water and prickly heat powder in the cosmetics industry. In addition, salicylic acid has the function of sterilization and disinfection, and can be used for swelling and itching
Use of salicylic acid in the pharmaceutical sector: sodium salicylate, apicillin, analgesic granules, etc.
Industrial Use of Salicylic Acid: Disinfectants and Antiseptics, Rubber Retardants
Storage method of salicylic acid: keep in a cool place, keep the surrounding environment dry and ventilated, and avoid sunlight
Common packaging methods: salicylic acid is generally packed by woven bags and plastic belts, and the weight is generally about 50 kg.