Salicylic acid, an organic acid with chemical formula of C7H6O3, is a white crystalline powder, slightly soluble in cold water, easily soluble in hot water, ethanol, ether and acetone, and soluble in hot benzene. It is mainly used as an important raw material for fine chemicals such as pharmaceuticals, spices, dyes, pesticides, rubber additives, etc.
1. It is used as a standard, fluorescent indicator and complexing indicator for alkalimetric and iodometric titration.
2. It is used as anti-coking agent and ultraviolet absorber and foaming agent in rubber industry.
3. It is used as coordination indicator, coordination masking agent, color developer and preservative for titanium, zirconium and tungsten plasma.
4. As an additive in some weak acidic electrolytes, it can also be used as a complexing agent for electroplating or electroless plating.
5. As a preservative for cosmetics, it is mainly used for water cosmetics such as toilet water, prickly heat water, quinine shampoo, etc. In addition to antisepsis and sterilization, it also has the functions of eliminating sweat and odor, relieving itching and swelling, and relieving pain and inflammation.
6. It is used as a raw material for the pharmaceutical industry, and is used for the preparation of aspirin, sodium salicylate, salicylamide, acetanilide, phenyl salicylate, Schistosoma-67 and other drugs. The dye industry is used to prepare mordant pure yellow, direct brown 3GN, acid chrome yellow, etc. It can also be used as rubber curing retarder and antiseptic.
7. It can be used as an accelerator for curing epoxy resin, as a preservative, as well as to prepare synthetic spices such as methyl salicylate and ethyl salicylate, as well as raw materials for preparing direct dyes and acid dyes in the dye industry, as well as rubber anti-coking agent and disinfectant.
8. A small amount is used to prepare animal essence and other daily essence, and a small amount is used in food as a preservative.
Chemical formula: C7H6O3
Molecular weight: 138.122
CAS No.: 69-72-7
EINECS No.: 200-712-3
Density: 1.375g/cm3
Melting point: 45.5 ºC
Boiling point: 336.3 ºC
Flash point: 144.5 ºC
Refractive index: 1.565
Appearance: white crystalline powder
Solubility: slightly soluble in cold water, easily soluble in hot water, ethanol, ether and acetone, soluble in hot benzene