Types of stearic acid and what are the uses of stearic acid

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.

The use of stearic acid is to make rubber products, sulfur promoters, activators, etc. Stearic acid is mainly used in the production of stearate.

1. Stearic acid is used in the rubber industry as a vulcanizing agent, softener, dispersant and other functions.

2. Stearic acid is used in the footwear industry, which can improve the wear-resistant agent of the sole, and hard salt foaming agent can also be used.

3. Stearic acid is used for stearate products, barium stearate, lead, cadmium, zinc, calcium, etc. are heat stabilizers and light stabilizers for plastics, and can also be used as thickeners for lubricating oils, flattening agents for paints, driers, defilmants for plastics, polishing agents for textiles, etc.

4. Stearic acid is used in candles to prevent tears when the candle burns. The most ideal raw material for stearic acid is P01820 stearic acid; Naqiao tea wax can be used to bridge ashwagandha with a variety of types of stearic acid; The most ideal raw material for cup wax is: P401005 stearic acid.

Introduction to Stearic Acid:

1. Stearic acid, with the chemical formula C18H36O2 and a molecular weight, is a chemical compound, namely octadecanoic acid. It is produced by the hydrolysis of Minjin oil and is mainly used for the production of stearate.

2. The inspection method is water-soluble acid: take 5g of this product, heat and melt, add hot water of equal volume of fresh boiling, shake for 2 minutes, cool, filter, add 1 drop of methyl orange indicator solution to the filtrate, and it shall not be red.

3. Neutral fat or wax: take this product, add 30ml of anhydrous sodium carbonate and water, boil to dissolve, and the solution should be clear.

4. Ignition residue: take this product, inspect it according to law, and the residual residue shall not pass.