How to distinguish between calcium stearate and stearic acid products?

How to distinguish between calcium stearate and stearic acid products, many people mistakenly think that calcium stearate and stearic acid products are a chemical product, although there is only one word difference, but their performance is very different, Calcium stearate is an important chemical product in the industrial production process, mainly used as a lubricant and a mold release agent.

What is acid? Chemically, acid refers to a compound whose cation is completely hydrogen ion when ionized in solution and can turn purple litmus test solution red. In a narrow sense, it can also be divided into inorganic acid and organic acid. The substances that release protons are collectively called acids. Stearic acid is an organic acid with a certain degree of acidity. The thing that loses hydrogen and combines with metal calcium ions is calcium stearate.

Stearic acid is a white or off-white powder or crystalline hard lump with a slippery feel, and its cross section has fine needle-like crystals with a slight gloss; it has a slight odor similar to oil and is tasteless. Calcium stearate is white powder, insoluble in water, cold ethanol and ether, soluble in hot benzene, benzene and turpentine and other organic solvents, slightly soluble in hot ethanol and ether, slowly decomposed when heated to 400 ℃, flammable, In case of strong acid, it decomposes into stearic acid and corresponding calcium salt, which is hygroscopic.

Stearic acid is used in skin care products such as vanishing cream and cold cream to emulsify, turning it into a stable white paste. Stearic acid is also the main raw material for the manufacture of almond honey and milk. Stearic acid soap esters are more widely used in the cosmetic industry.

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