Name: stearic acid
Chemical name: octadecanoic acid
Also known as: stearic acid; eighteen carbon alkyl acid;
English name: Stearic acid; Octadecanoic acid, Triple Pressed Stearic Acid
Molecular formula: C18H36O2; CH3 (CH2) 16COOH
MW: 284.48
CASNo.: 57-11-4
Basic Properties
Properties: pure white waxy small piece of slightly shiny crystals.
Melting point :71.5-72 ℃ 69.6 ℃
Boiling point: 232 ℃ (2.0kPa)
Flash point: 220.6 ℃
Ignition point: 444.3 ℃
Relative density: 0.9408
Refractive index: 1.4299
Stability: 360 ℃ decomposition (otherwise known as data 376.1 ℃)
Toxicity: non-toxic
Solution: do not dissolve in water (20 ℃, 100 ml of water only to dissolve 0.00029g). Slightly soluble in cold ethanol. Soluble in acetone, benzene, ethyl ether, chloroform, carbon tetrachloride, sulfur dioxide, chloroform, hot ethanol, toluene, amyl acetate, and so on.
Other: slowly volatile in the next 90-100 ℃. Organic carboxylic acid general chemistry with continuity
Mainly usage: Widely used in making cosmetics, plastic cold plasticizers, release agents, stabilizers, surfactants, rubber vulcanization accelerators, waterproofing agent, polishing agent, metal soap, metal mineral flotation agents, softeners, pharmaceuticals and other organic chemicals.
In addition, oil-soluble pigments can be used as a solvent, lubricant transfer crayons, wax polishing agent, stearic acid glycerol emulsifiers.