English name: stearic acid alias: octadecanoic acid, octadecanoic acid, fatty wax acid.
Molecular formula: C 18H36O2.
Structural formula: CH3(CH2) 16COOH.
Properties: a high-grade saturated fatty acid, pure white, soft and shiny. The relative density is 0.9408(20℃), the melting point is 69~70℃, the boiling point is 383℃, and the refractive index is 1.4299(80℃). Industrial products are white or yellowish particles, a mixture of stearic acid and palmitic acid, containing a small amount of oleic acid and having a slight butter-like smell. Very slightly soluble in cold water, easily soluble in benzene, toluene, chloroform, carbon tetrachloride, carbon disulfide, amyl acetate, etc. But also soluble in ethanol and acetone.
Industrial products are divided into first-class products (or Type 200, formerly known as squeezing stearic acid for three times), second-class products (or Type 400, formerly known as squeezing stearic acid for two times) and third-class products (or Type 800, formerly known as squeezing stearic acid for one time or not). The first-class and second-class products are white waxy solids. Stearic acid rarely exists alone in nature, often in the form of glyceride, such as triglyceride, which exists in most animal and vegetable oils, especially butter. Stearic acid is a kind of soap, which is produced by the reaction of organic acid and alkali. Quality specification: GB-9 103- 1988 indicator name indicator 200 type (first-class) 400 type (second-class) 800 type (third-class) iodine value, g I 2/ 100g ≤ 2.0 4.0 8.0 saponification value, mg. Kloc-0/4 is an indispensable raw material for making general emulsified products in the cosmetics industry, and is used to prepare vanishing cream, cold cream, foundation cream, shaving cream, hair cream, skin care emulsion, etc. In the rubber industry, it is a vulcanization activator for natural rubber, synthetic rubber and latex, and also used as a softener. Used as plasticizer, stabilizer and lubricant in plastic industry. Used as yarn lubricant and softener for making mercerized paste in textile industry. It is also used to manufacture products such as release agent, polishing paste, defoamer, metal flotation agent, paint matting agent, waxed paper polishing agent, textile waterproofing agent, etc. It is a solvent for oil-soluble pigments and a raw material for making stearate and stearate such as methyl stearate, calcium stearate and lead-potassium stearate. Security and protection.
This product is non-toxic and packed in woven bags or cartons lined with plastic bags, each bag (or box) has a net weight of 25 kg and 50 kg. Store and transport in a cool and dry place according to general chemical regulations.