stearin

[′stir·ən]

(organic chemistry)

C₃H₅(C₁₈H₃₅O₂)₃ A colorless combustible powder; insoluble in water, soluble in alcohol, chloroform, and carbon disulfide; melts at 72°C; used in metal polishes, pastes, candies, candles, and soap, and to waterproof paper. Also known as glyceryl tristearate; tristearin.

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Stearin

technical-grade stearic acid; a mixture of the higher fatty carboxylic acids, mainly stearic and palmitic acids. Stearin is a semitransparent white or yellowish substance that is greasy to the touch. Depending on the source, it has a melting point between 53° and 65°C; its density is 0.92 g/cm³ (20°C). It is obtained by the distillation of hydrolysates of animal fats with subsequent crystallization and pressing or by the hydrogenation of unsatu- rated acids from vegetable oils. Stearin is used in the production of candles, usually in a mixture with paraffin.

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References in periodicals archive

The results of the color, refraction index, melting point, density, acidity, moisture, and peroxide and iodine values of palm stearin, high oleic safflower oil, PS/HOSO crystallized blends mixed at different agitation rates, and HCS are depicted in Tables 1 and 2.

Formulation of Zero-Trans Crystalized Fats Produced from Palm Stearin and High Oleic Safflower Oil Blends

The processing of palm oil-based cooking oil would turn out by products RBD Stearin (Refined Bleached Deodorized Stearin), and PFAD (Palm Fatty Acids Destillation).

Cooking oil industry growing fast

Effect of Cu and palm stearin coating on ammonia volatilization of Urea.

Maize Response to Biodegradable Polymer and Urease Inhibitor Coated Urea

* Related industries not yet developed include Palm Kernel Cake, Crude Palm Fatty Acid, RBD Palm Kernel Stearin, Metallic Salt, Polyethoxylate Derivatives, Fatty Amines, Fatty Amide, Soaps, Animal feed, Glycerol, Glycerin.

Road map of development of CPO processing industry

Cooking oil produced from CPO is through fractionation or decomposition of stearin from olein.

2. Cooking oil industry

Supply of 200 tons palm stearin required for both the company's factories in Cairo and Sohag.

Supply of 200 tons palm stearin required for both the company's factories in Cairo and Sohag

In February, 2001, the export tax on CPO was 3% but the export tax on five types of CPO derivatives was abolished including branded RBD-olein in 5-kg packaging, Crude stearin, RBD- Stearin, Crude PKO and RBD PKO, and on Crude Coconuts Oili (CC0) and RBD CO.

1. Government hints at plan to raise CPO export tax to 60%

Supply of 200 tons palm oil of food grade and 200 tons palm stearin. Ref.

Supply of 200 tons palm oil of food grade and 200 tons palm stearin

Supply of 600 tons palm stearin and 800 tons palm oil for the company's factories.

Supply of 600 tons palm stearin and 800 tons palm oil for the company's factories

The company, which plans to operate in coconut oil processing industry, will have an annual capacity of 333,000 tons of refined bleached deodorized olein, 85,500 tons of refined bleached deodorized stearin and 22,500 tons of palm fatty acid distillation.

PMDN and PMA projects approved in third and fourth weeks of August, 2003