Product Description
Lauryl Alcohol (Dodecanol)
Lauryl alcohol, also known as dodecanol, is a yellow oily liquid or solid with a pungent odor. There are two hydrogenation methods for its production. It has a wide range of applications including in light industry, chemical industry, metallurgy, medicine, fragrances, surfactants, etc.
Aliases: Lauryl Alcohol, Coconut Alcohol, 1-Dodecanol
English Name: Dodecyl Alcohol
CAS Registry Number: [112-53-8]
HS-No.: 29051700.00
Molecular Formula: C12H26O
Molecular Weight: 186.34
Storage Method: Keep in a cool, dry place, avoid exposure to sunlight and rain.
Shelf Life: Two years
Standard: HG/t 2301-92
Lauryl Alcohol (Dodecanol)
**Physical and Chemical Properties:** Lauryl alcohol is a yellow oily liquid or solid with a pungent odor. It is flammable. The melting point is 26°C (24°C), boiling point is 255-259°C (192°C at 13.3kPa, 150°C at 6.67kPa, 134.7°C at 1.33kPa), relative density is 0.8309 (24/4°C), refractive index is 1.4428, flash point is >100°C, soluble in ethanol (1 part lauryl alcohol in 2 parts 70% ethanol) and ether, insoluble in water. It has a floral fragrance.
**Production Methods:**
1. High-pressure hydrogenation method: Coconut oil is continuously hydrogenated in the presence of a copper-chromium catalyst, producing a mixture of C8-C18 alcohols. The glycerol in the fat is hydrogenated to isopropanol and water. The mixed fatty alcohols are often pressure distilled to remove water and isopropanol, followed by vacuum distillation to separate C8-C10 alcohols, C12-C14 alcohols, and C16-C18 alcohols.
2. Esterification hydrogenation method: Coconut oil undergoes ester interchange reaction with methanol in the presence of sulfuric acid, forming methyl laurate and glycerol, which are then subjected to catalytic hydrogenation and distillation to obtain lauryl alcohol.
**Uses:**
1. Used in the manufacture of efficient detergents, surfactants (such as sodium lauryl ether sulfate, K12, AEO), foaming agents, emulsifiers, frothers, textile lubricants, germicides, cosmetics, plasticizers, plant growth regulators, lubricant additives, and other specialty chemicals.
2. Widely used in light industry, chemical industry, metallurgy, pharmaceuticals, and other industrial sectors.
3. Dodecanol has scents of violet and moonlit night, suitable for rose, violet, and lily-narcissus type fragrances.
4. Chemically stable, safe for use in soap fragrances.
5. Oxidation or dehydrogenation can yield dodecanal.
6. Also used in cosmetics, perfumes, textile auxiliaries, synthetic oil agents, emulsifiers, and flotation agents.
7. Some surfactants derived from dodecanoic acid and dodecanol are also disinfectants and germicides.