AskDefine | Define stearin

Dictionary Definition

stearin n : an ester of glycerol and stearic acid

User Contributed Dictionary

English

Noun

  1. Solid fat
  2. The triglyceride of stearic acid

Extensive Definition

Stearin ( or /ˈstɪɹɪn/) is a glyceryl ester of stearic acid, derived from animal fats created as a byproduct of processing beef. It is used as tallow in the manufacture of candles and soap. In the manufacture of soap, it is mixed with a sodium hydroxide solution in water. The following reaction gives glycerin and soap (sodium stearate): C3H5(C18H35O2)3 + 3NaOHC3H5(OH)3 + 3C17H35COONa
Stearin is also used in conjunction with Aluminum Flakes to help in the grinding process in making Dark Aluminum powder. It is a side product during extraction of cod liver oil removed during chilling process at temperature below -5°C.
stearin in Danish: Stearin
stearin in German: Stearin
stearin in Esperanto: Stearino
stearin in Spanish: Estearina
stearin in Finnish: Steariini
stearin in French: Stéarine
stearin in Italian: Stearina
stearin in Dutch: Stearine
stearin in Norwegian Nynorsk: Stearin
stearin in Polish: Stearyna
stearin in Russian: Стеарин
stearin in Swedish: Stearin
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