stearyl alcohol C18 alcohol 112-92-5

C18 alcohol stearyl alcohol

Stearyl alcohol, also known as 1-octadecanol and n-octadecanol, belongs to long-chain high-carbon fatty alcohols. The appearance is white flake or needle like crystal, or block solid, fragrant smell, low volatility, insoluble in water, soluble in chloroform, alcohol, ether, acetone, benzene and other organic solvents. It is slightly toxic, slightly irritating to eyes and skin, and combustible. Its dust can form explosive mixture with air. It is mainly used as organic synthetic raw materials.

The molecular formula is c18h38o and the chemical structure formula is CH3 (CH2) 17oh.

Chinese Name: stearic alcohol

Chinese alias: 1-octadecanol, octadecanol; C18 alcohol; n-octadecanol; [1]

English Name: stearyl alcohol

English alias: octadecan-1-ol; stearyl alcohol; 1-octadecanol; octadecyl alcohol, 1-hydroxyctadecane; [2]

CAS No.: 112-92-5

Molecular formula: c18h38o

Molecular weight: 270.49400



Physical property data

1. Character: white waxy lobular crystal at room temperature, with fragrance.

2. Secret

3. Relative vapor density (g / ml, air = 1): 9.3

4. Melting point (OC): 57.5

5. Boiling point (OC): 210.5

6. Refractive index (20 ° C): 1.45

7. Flash point (OC): 185

8. Ignition point or ignition temperature (OC): 247.8

9. Vapor pressure (mmHg, 38 ° C): < 0.01

Solubility: insoluble in water, soluble in ethanol and ether, slightly soluble in benzene, chloroform and acetone.

11. Room temperature refractive index (N25): 1.438860

12. Relative density (25 ℃, 4 ℃): 0.812360

13 boiling point (OC): 20310



purpose

1. Octadecanol can be used instead of hexadecanol, such as dispersant in medicine, cream and emulsifier in cosmetics, heat preservation agent for paddy field, covering agent for reservoir, defoamer, polishing agent, lubricant, etc. Octadecanol can be used in the production of Pingjia, resin and synthetic rubber, couplers of color film, etc. Antioxidant 1076 (2082-79-3) was prepared by the reaction of octadecanol with methyl β - (3,5-di-tert-butyl-4-hydroxyphenyl) propionate at 130 ℃ for 2-3 h with sodium methoxide as catalyst and dimethyl sulfoxide as solvent. It is an excellent non polluting non-toxic antioxidant, which is widely used in polyolefin, polyamide, polyester, polyvinyl chloride, polystyrene, ABS resin to expand all kinds of rubber petroleum products.

2. It can be used as additive of oil-based fracturing fluid instead of hexadecanol. Octadecanol can be used in the production of Pingjia, resin and synthetic rubber, color film couplers and so on.

3. Used as chromatographic reagent. It is also used as surfactant and lubricant. For organic synthesis.

4. In addition, it can also be used as raw materials of defoamer, flotation agent, softener, heat preservation agent for paddy field, water surface covering agent, medicinal ointment and color coupler of color film.