What are the benefits of eating stearic acid What are the uses of stearic acid

Stearic acid can be said to be a high-grade saturated fatty acid, and the structure of stearic acid is mainly shiny, white and soft small flakes. Stearic acid can be used as a lubricant, anti-sticking agent, especially suitable for the production of oils, because the particles made of stearic acid have relatively good fluidity and compressibility.

In fact, if stearic acid is ingested for a long time, it will cause damage to people's eyes, and it will also cause certain damage to people's respiratory tract and respiratory system, which will cause patients to have symptoms of cough and shortness of breath. If you are exposed to cosmetics and foods containing stearic acid for a long time, it will still be harmful, so it is recommended to have an eye and respiratory examination during this process. Stearic acid can also be used as a preservative, in addition to adding stearic acid can improve the properties of the coating layer, in the paint and spray paint, it also has a certain effect, and many people will use stearic acid as a surface brightener.

1. The chemical properties are different: Palmitic acid is hexylic acid, also known as palmitic acid, and stearic acid is octadecylic acid. Both are saturated fatty acids, but stearic acid has two more methylene groups than palmitic acid, and stearic acid has a higher melting point.

2. The appearance is different: Hexadecytic acid (palmitic acid) is a white scaly crystal. Octadecyl acid (stearic acid) is a white flaky, beady, or lumpy solid at room temperature.

Hexadecytic acid (palmitic acid) is obtained by vacuum fractionation of mixed fatty acids or fatty acid methyl esters obtained from coconut oil and palm oil.

Stearic acid has varying amounts in almost all oils and fats, and the content in animal fats is higher, such as 24% in butter, less in vegetable oil, tea oil, 6% in palm oil, but up to 34% in cocoa butter. There are two main production methods of industrial stearic acid: fractionation and pressing.

The above content refers to Encyclopedia - Palmitic Acid.

Stearic acidIt mainly exists in the derivatives of various plants and animals, and is often used as an emollient and aromatic agent in cosmetics. However, if you add too much, it may cause discomfort and can lead to acne.

and other symptoms. Stearic acid is non-toxic, slightly soluble in cold water, soluble in alcohol, acetone.

Soluble in benzene, ether, carbon dioxide.

toluene, etc. Stearic acid is a fatty acid widely found in nature, which is relatively high in animal fats and relatively small in vegetable oils.

Industrial use. Stearic acid is a heat stabilizer for PVC plastic pipes, which has good lubricity and heat stabilization. In the rubber industry, stearic acid plays a very important role in the synthesis and processing of rubber.

In the processing of natural rubber, synthetic rubber and latex, stearic acid is used as a vulcanizing active agent and can be used as a plasticizer and softener. This can also be used as a foaming agent when remanufacturing foam rubber. In the cosmetics industry, stearic acid is mainly used in two skin care products, alabaster cream and cold cream, to emulsify.

In addition, stearic acid can also be used as the main ingredient for almond honey and milk.

Stearic acid is a kind of fatty acid widely found in nature, almost all oils and fats have varying amounts of stearic acid, and the content in animal fats is higher, such as butter content up to 24%, vegetable oil content less, tea oil, palm oil is 6%, but the content in cocoa butter is as high as 34%.

Dissolve the sodium hydroxide in 50 parts of water and raise the temperature to 85 parts for later use. Put 25 parts of stearic acid into the reaction kettle, heat 500 parts of water, dissolve under stirring, and adjust the temperature to 85 90. The prepared sodium hydroxide solution was slowly added to the aqueous solution of stearic acid under stirring, maintaining the temperature at 75 80, and the reaction was stirred to the end point.

The product sodium stearate liquid is kept warm for later use.

There are two main production methods of industrial stearic acid: fractionation and pressing. A decomposing agent is added to the hardened oil, and then the crude fatty acid is hydrolyzed, and then the finished product is obtained by washing, distillation and decolorization. At the same time, glycerin is a by-product.

Stearic acid, i.e., octadecanoic acid, molecular formula C18H36O2, is produced by hydrolysis of oils and fats, mainly in the production of stearate. Each gram is dissolved in 21 ml of ethanol, 5 ml of benzene, 2 ml of chloroform or 6 ml of carbon tetrachloride.

1. Cosmetics industry.

Stearic acid is used in two types of skin care products, creams and creams, to emulsify, so that they become a stable and white paste. Stearic acid is also the main ingredient in the manufacture of almond honey and milk. Sapononers are more widely used in the cosmetics industry.

2. Rubber industry.

1. Softening and plasticizing;

2. As an external lubricant;

3. It is conducive to the full diffusion of carbon black, silica and zinc oxide;

4. Reacting with zinc oxide or alkaline accelerator can promote its activity, and it is also the main vulcanization promotion aid, which can play the role of the second accelerator. It can speed up hardening.