Chemical Name:Salicylic acid
CAS No.: 69-72-7
Molecular formula: C7H6O3
Molecular weight: 138.12
Nature
Melting point | 158-161 °C(lit.) |
Boiling point | 211 °C(lit.) |
Density | 1.44 |
Vapor density | 4.8 (vs air) |
Vapor Pressure | 1 mm Hg ( 114 °C) |
Refractive index | 1,565 |
FEMA | 3985 | 2-HYDROXYBENZOIC ACID |
Flash point | 157 °C |
Storage conditions | Store at RT. |
Solubility | ethanol: 1 M at 20 °C, clear, colorless |
form | Solid |
Acidity coefficient (pKa) | 2.98(at 25℃) |
colour | White to off-white |
Acid-base indicator color change ph value range | Non0 uorescence (2.5) to dark blue 0 uorescence (4.0) |
PH value | 2.4 (H2O)(saturated solution) |
Water solubility | 1.8 g/L (20 oC) |
Sensitivity | Light Sensitive |
Maximum wavelength (λmax) | 210nm, 234nm, 303nm |
Merck | 14,8332 |
Sublimation point | 70 oC |
BRN | 774890 |
stability | Stable. Substances to be avoided include oxidizing agents, strong bases, iodine, fluorine. Combustible. Sensitive to light. |
main application | Semiconductors, nanoparticles, photoresists, lubricating oils, UV absorbers, adhesive, leather, cleaner, hair dye, soaps, cosmetics, pain medication, analgesics, antibacterial agent, treatment of dandruff, hyperpigmented skin, tinea pedis, onychomycosis, osteoporosis, beriberi, fungicidal skin disease, autoimmune disease |
InChIKey | YGSDEFSMJLZEOE-UHFFFAOYSA-N |
CAS database | 69-72-7(CAS DataBase Reference) |
Chemical properties
White needle crystal or monoclinic crystal, with a spicy taste. Slightly soluble in water, soluble in acetone, turpentine, ethanol, ether, benzene and chloroform.
Use
1. Salicylic acid, also known as o-hydroxybenzoic acid, is an important organic synthetic raw material. In the production of pesticides, the intermediate used in the synthesis of organophosphorus insecticides, sulphate, methyl isoflavin, isopropyl salicylate, and the intermediate of the rodenticide, warfarin and coumatetralyl. Soybean; in the pharmaceutical industry, salicylic acid is used as an intermediate for various drugs such as acetylsalicylic acid (aspirin) in addition to itself as a disinfectant and antiseptic; it is also an important raw material for dyes, perfumes, rubber and other industries.
2. It is mainly used as a raw material for aspirin drugs and a raw material for pesticides such as sulphate, and can also be used in dye industry, refined chemical reagents, etc.
3. The pharmaceutical industry is used to prepare heat, analgesic, anti-inflammatory, diuretic and other drugs. The dye industry is used to make azo direct dyes and acid mordant dyes, and also used in spices, etc.