What is the difference between octadecanol and cetyl alcohol?

People often ask whether there is a difference between stearyl alcohol and cetyl alcohol, which are both alcohols.

The following is the supply of octadecanol and octadecyl alcohol Hexa-alcohol makes a specific comparison of the properties, production and uses of octadecanol and cetyl alcohol:

1. Physical and chemical properties:

18 Alcohol: White flakes or granules. Melting point 59.4-59.8℃ (freezing point 57.95℃), boiling point 210℃ (2kPa) 170-171℃ (0.266kPa), relative density 0.8124 (59/4℃), refractive index 1.4346 (45℃). Soluble in alcohol, benzene and chloroform, insoluble in water.

16 alcohol: White with rose aroma crystallization. The melting point is 49.6℃, the boiling point is 344℃, 190℃ (2.0kPa), the relative density is 0.8176 (20/4℃), and the refractive index is 1.4392 (20℃). Soluble in ethanol, ether, benzene, chloroform, acetone, insoluble in water.

2. Production method:

18-alcohol: Can be produced by hydrolysis of pilot whale oil. It can also be obtained by hydrogenation of stearic acid under the catalysis of copper chromate, or reduction of ethyl stearate with saturated ethanol. The heptadecene fraction can also be obtained by controlling the polymerization reaction of ethylene under the action of alkyl aluminum, and then octadecyl alcohol can be obtained through oxo synthesis.

16 alcohol: This product was first produced by whales Obtained by hydrolysis of wax. Industrially, it can be obtained by reduction of oil or fat, or reduction of palmitoyl chloride with sodium borohydride.

3, purpose:

Both stearyl alcohol and cetyl alcohol can be used in cosmetics (especially suitable for cream cosmetics ), medical ointment, Pingpingjia, defoaming agent, soil and water insulation agent, coupler, etc. However, the performance of stearyl alcohol thickening emulsion is stronger than that of cetyl alcohol.

18 alcohol: Used to make surfactants Agent (pingpingjia), resin, synthetic rubber, etc., is the basic raw material for cosmetic creams and lotions. Its thickening emulsion performance is stronger than cetyl alcohol and it is an emulsion stabilizer. Cosmetic-grade stearyl alcohol can be used in high-end cosmetics. It has a pure aroma and can reduce the amount of fragrance. Stearyl alcohol and β-(3,5-di-tert-butyl-4-hydroxyphenyl) methyl propionate are reacted at 130°C for 2-3 hours using sodium methoxide as the catalyst and dimethyl sulfoxide as the solvent. Oxygen 1076 (2082-79-3). This is an excellent non-polluting non-toxic antioxidant. In addition, it can also be used to make defoaming agents, flotation agents, softeners, rice field insulation agents, water surface covering agents, raw materials for medical ointments and color formers for color films.

16 alcohol: Used in the manufacture of spices, Cosmetics, detergents, plasticizers, etc., suitable for use in various cosmetics. As a base, it is especially suitable for creams and lotions. In medicine, it can be directly used in W/O emulsifier pastes, ointment bases, etc. The raw material can also be used as defoaming agent, water and soil insulation agent, coupler, and gas chromatography fixative. </span