It is understood that stearic acid is white flakes and beads at room temperature. or solid block. It is composed of saturated fatty acids mainly C16 and C18. It is insoluble in water, slightly soluble in benzene and carbon disulfide, easily soluble in hot ethanol, non-toxic and tasteless, and has the general chemical properties of organic carboxylic acids. Stearic acid is a fatty acid widely found in nature. Almost all oils contain stearic acid in varying amounts. The content is higher in animal fats. For example, the content in butter can reach 24%, and in vegetable oils it is less. , tea oil is 0.8%, palm oil is 6%, but the content of cocoa butter is as high as 34%. There are two main production methods for industrial stearic acid: fractionation method and pressing method. A decomposing agent is added to the hardened oil, and then it is hydrolyzed to obtain crude fatty acids, which are then washed, distilled, and decolorized to obtain the finished product, while glycerol is produced as a by-product.
Stearic acid can be used in products in these industries:
1. Stearic acid is used in the rubber industry as a vulcanization activator, softener, and dispersant. Agents and other effects.
2. Stearic acid is used in stearate products. Barium stearate, lead, cadmium, zinc, calcium, etc. are heat stabilizers and light stabilizers for plastics, and can also be used as lubricants. thickening agent, paint flattening agent, drier, plastic release agent, textile polishing agent, etc.
3. Stearic acid is used in candles to prevent the candles from crying when they burn. The most ideal raw material for cup wax is P01820 stearic acid; various types of stearic acid can be used for tea wax; and the most ideal raw material for cup wax is: P401005 stearic acid.
4. Stearic acid is used as an auxiliary slurry in the textile printing and dyeing industry as a dispersant, softener, penetrating agent, antifriction agent, and defoaming agent. It is used as the main raw material of mercerizing paste in the printing and dyeing industry.
5. Stearic acid can also be used in the cosmetics industry as an oily raw material for creams such as ice cream and cold cream. It can also be used as an emulsifier for cream products. In addition, it can also be used as a rich Grease agent, softener, solvent for skin cleansing, glossy agent for pastes.
6. The production of PVC pipes and gussets uses stearic acid and calcium stearate.
7. Stearic acid can also be used in the production of cable electrical materials, and zinc stearate is also used.
8. Artificial leather industry: stearic acid and barium stearate can be used.
9. Stearic acid is an important stabilizer, emulsifier, dispersant, chewing gum viscosity regulator and food quality improver in the food additive industry.
10. Papermaking industry, A. Sizing agent: Stearic acid is the raw material for making wax emulsion. The wax emulsion is coated on tracing paper, oil-proof paper, wax paper and other varieties, which can increase the waterproofness of the paper. , glossiness and printing adaptability.
11. In the cultural and educational supplies industry, stearic acid is an important raw material for manufacturing crayons. Stearic acid can improve the gloss and opacity of crayons. The amount of stearic acid accounts for 30% of crayons. In addition, stearic acid can also be used in pencil cores to increase the hardness and slipperiness of the pencil core and improve the coloring power and adhesion. Stearic acid also acts as a gelling agent for solid glues.
12. In the grease industry, stearic acid is the main raw material for manufacturing soap base, mainly producing lithium-based grease and calcium-based grease.
13. The ultra-fine activated calcium carbonate industry uses stearic acid to increase activity, and stearic acid is used as a medium when producing activated calcium carbonate. (Stearic acid is included in the formulas of the shoe polish industry, stearic acid is used in the formulas of the metal polish industry, and stearic acid can be used in the automotive polish wax and floor brightener industries.
15. Glass fiber In wire drawing and metal wire drawing industries, stearic acid acts as a release agent and lubricant.
16. Solid alcohol industry: Stearic acid can be used as a raw material for solid alcohol.
17 , Compound fertilizer industry: Stearic acid can be used as an anti-caking agent for compound fertilizers.
18. Stearic acid is used in the waterproof material industry to improve the waterproofness of materials.
9. Grinding A small amount of stearic acid is used in the abrasive industry.
20. Stearic acid is used in the shoe industry to improve the wear resistance of shoe soles. In addition, hard salt can also be used as a foaming agent.
21. Stearic acid can be used in gun barrels and explosives industries.
22. Stearic acid can be used in manufacturers of masterbatch fillers.
23 , Manufacturers that produce coupling agents can also use stearic acid as a raw material.
24. Stearic acid is used in the plastics industry as a plasticizer, stabilizer and lubricant.
25. Used as an excipient in the pharmaceutical industry and as a base for creams, ointments, and suppositories.
26. A small amount of stearic acid and glycerin can be used in the art pigment industry.
27. Stearic acid can be used in the production of rubber rollers, the tape industry and the insulation material industry.
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