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Stearic acid is a kind of fatty acid widely existing in nature. There are different contents of stearic acid in almost all fats. The content of stearic acid in animal fat is higher, such as 24% in butter, less in vegetable oil, 0.8% in tea oil, 6% in palm oil, but the content of cocoa butter is as high as 34%.
Stearic acid is octadecanoic acid, molecular formula C18H36O2, mainly by oil hydrolysis for industrial production, mainly used for the production of stearate.
|White - light yellow flake solid
Iodine value（gI2/100g） No greater than
Freezing point ℃ not less than
|The content of C16:0 is not less than
GB/T 17376 GB/T 17377a
三、Properties and stability
This product is white or almost white powder or crystalline hard block with greasy feeling, and its section has fine needle-like crystal with slight luster; It has a slight odor and tastelessness similar to grease. This product is soluble in chloroform or ether, soluble in ethanol, almost insoluble in water.
1. Stearic acid shall be packed in woven bags lined with plastic bags of 25kg or 50kg net per case (bag).
2. Store in a cool, dry and ventilated place, away from fire source and oxidizer. Store and transport in accordance with the provisions of general chemicals.
Mainly used for the production of stearate: sodium stearate, magnesium stearate, calcium stearate, lead stearate, aluminum stearate, cadmium stearate, iron stearate, potassium stearate.
Widely used in the production of cosmetics, plastic cold plasticizer, release agent, stabilizer, surfactant, rubber vulcanization accelerator, waterproof agent, polishing agent, metal soap, metal mineral flotation agent, softener, medicine and other organic chemicals.
In addition, it can also be used as solvent of oil soluble pigment, crayon slippery agent, wax paper polishing agent, emulsifier of stearic acid triglyceride, etc.
The product is used in the food industry as lubricant, defoamer and food additives stearate glycerol, stearate sorbitol anhydride, sucrose ester and other raw materials. Raw materials used as additives and raw materials for daily chemical products.
Stearic acid is widely used in the manufacture of PVC plastic pipe, plate, profile and film. PVC heat stabilizer, with good lubricity and good light and heat stability. In plastic PVC pipes, stearic acid helps prevent "coking" during processing, and is an effective heat stabilizer in PVC film processing, as well as preventing discoloration of finished film caused by exposure to sulfide.
Diesel cetane number
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