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the type and use of stearic acid
Date : 2017-01-13

Fatty acids are mainly produced by the oil hydrolysis process. Stearic acid in the form of glycerol ester in animal fats, oil and some vegetable oil, the oil obtained by the hydrolysis of stearic acid. Stearic acid is a fatty acid widely found in nature. Almost all oils and fats contain varying levels of stearic acid, with a high content in animal fats, such as tallow, up to 24%, and less vegetable oil , 0.8% for tea oil and 6% for palm oil, but the content of cocoa butter was as high as 34%.

Industrial stearic acid production methods are mainly fractionating and pressing two. In the hardening oil by adding decomposition agent, and then hydrolysis of crude fatty acids, and then washed, distillation, decolorization derived products. While glycerol by-product. Mainly used in the production of stearate: sodium stearate, magnesium stearate, calcium stearate, lead stearate, aluminum stearate, cadmium stearate, iron stearate, potassium stearate. Widely used in the system of cosmetics, plastic cold plasticizers, release agents, stabilizers, surfactants, rubber vulcanization accelerator, waterproofing agent, polishing agent, metal soap, metal mineral flotation agent, softeners, pharmaceuticals and other Organic chemicals. In addition, it can also be used as solvent for oil-soluble pigment, crayon slip agent, stencil polishing agent, glycerin stearate emulsifier and so on.

Stearic acid is widely used in PVC plastic pipe, sheet, profiles, film manufacturing. Is a PVC heat stabilizer, has good lubricity and good light, heat stability. In plastic PVC pipes, stearic acid helps to prevent "coking" during processing and is an effective heat stabilizer for PVC film processing, as well as protecting the finished films caused by exposure to sulfides Discoloration.

Stearic acid plays an important role in the synthesis and processing of rubber. Stearic acid is a natural rubber, synthetic rubber and latex widely used in the vulcanization activator, can also be used as plasticizers and softeners. Stearic acid can be used as a foaming agent in the manufacture of foam rubber, stearic acid can also be used as a rubber mold release agent.

Stearic acid can also be used in cream and cream cream of these two types of skin care products play a role in emulsification, making it a stable white paste. Stearic acid is also the production of almond honey and milk the main raw material. Stearic acid soap esters in the cosmetics industry is more widely used.

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