What are the applications of stearic acid in the cosmetics industry?

[Alias]Octadecanoic acid, octadecanoic acid, oleic acid

［Molecular Formula］C18H36O2

[Properties]A high-grade saturated fatty acid, the pure product is white soft flakes with luster. The relative density is 0.9408 (20℃), the melting point is 69-71℃, the boiling point is 383℃, and the refractive index is 1.4299 (80℃).

The industrial product is white or yellowish granular, a mixture of stearic acid and palmitic acid, and contains a small amount of oleic acid, with a slight butter-like smell. Very slightly soluble in cold water, easily soluble in benzene, toluene, chloroform, carbon tetrachloride, carbon disulfide, amyl acetate, etc., and also soluble in ethanol and acetone. Industrial products are divided into first-class products (or type 200, formerly known as three-press stearic acid, after three pressings), second-class products (or type 400, formerly known as two-press stearic acid, after two pressings) and third-class products (or 800 Type, formerly known as one-pressed stearic acid, after one pressing or without pressing). The first and second grade products are white waxy solids, and the third grade products are light yellow waxy solids. Stearic acid rarely occurs alone in nature. It often exists in the form of glyceryl esters, such as tristearin, which is found in most animal and plant oils, especially butter. Stearic acid is an organic acid that can react with alkali to form sodium stearate, which is a kind of soap.

[Use]It has a wide range of uses. In the cosmetics industry, it is an indispensable raw material for the manufacture of general emulsified products. It is used to prepare creams, Cold cream, foundation cream, shaving cream, hair lotion and skin care lotion, etc. In the rubber industry, it is a vulcanization active agent for natural rubber, synthetic rubber and latex, and is also used as a softener. Used as plasticizer, stabilizer and lubricant in the plastics industry. In the textile industry, it is used as a yarn lubricant and a softener in the manufacture of mercerizing paste. It is also used in the manufacture of release agents, polishing pastes, defoaming agents, metal flotation agents, paint flattening agents, wax paper polishing agents, textile waterproofing agents and other products. It is a solvent for oil-soluble pigments. It is also the raw material for manufacturing fatty acid esters and stearates such as methyl stearate, glyceryl stearate, calcium stearate, potassium stearate, and lead stearate.

[Tong Yao Preparation Method]The hardened oil obtained by hydrogenation of cottonseed oil, palm oil, etc. becomes beef tallow and mutton fat after decomposition It is obtained by hydrolysis in the presence of agent (prepared by sulfonation of a mixture of oleic acid, benzene, naphthalene, etc.), and then distilled, pressed (or not pressed), pickled, and decolorized.

[Safety and Protection]This product is non-toxic and can be packed in woven bags or cartons lined with plastic bags. Each bag (or Each box) net weight 25kg, 50kg. Store and transport according to general chemical regulations and store in a cool and dry place.