Stearic acid is a fatty acid widely found in nature, almost all oils and fats There are varying amounts of stearic acid in animal fats, and the content in animal fats is higher. For example, the content in butter can reach 24%, and the content in vegetable oils is less. Camellia oil is 0.8%, palm oil is 6%, but cocoa The fat content 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 hydrolyzed to obtain crude fatty acids, which are then washed, distilled, and decolorized to obtain the finished product. At the same time, glycerol is produced as a by-product.
The following suppliers of stearic acid will help you understand the three-level classification of stearic acid:
Stearic acid industrial products are divided into first-level (formerly known as three-level stearic acid products). Pressing, after three pressings), two-level (formerly known as two-pressing, after two pressings) and three-level (formerly known as one-pressing, after one pressing or without pressing). It is a mixed acid containing mainly stearic acid and palmitic acid. Primary and secondary stearic acid are white waxy solids with luster or grains. Tertiary stearic acid is a light yellow waxy solid.
The first-level acid is also called cosmetic-grade stearic acid, and the third-level acid is rubber-grade stearic acid. Headphones are in between the two, and are not suitable for customers with high quality requirements. , such as mid-range hard salt. First-grade stearic acid can be used in the food industry. The primary acid mainly uses plant raw materials, also known as plant acid. Tertiary acid is animal raw material, usually animal acid.
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