The main difference between the two points of stearic acid and calcium stearate

Stearic acid are calcium stearate are salts. Salt meanings:
Refers to a salt of a metal ion or an ammonium ion (+ NH4) ion or a compound with a combination of non-metallic ions . Such as sodium chloride , calcium nitrate , ferrous sulfate, ammonium acetate and the like , such as calcium sulfate , copper chloride , sodium acetate , the salt is generally in the metathesis reaction product , such as sodium sulfate and sodium hydroxide , and water is generated , there are also other salts can be generated in the reaction , e.g., a substitution reaction . Solution of a soluble salt of a conductive , because the solution to be freely mobile ions , therefore can be used as an electrolyte. It would appear that calcium stearate containing metal ions on the calcium salt , literally you can see . Acid meaning:
The acid in solution chemistry is the ionization of hydrogen ions and cations can completely compound of purple red litmus test solution . In a narrow sense can be divided into inorganic acids, organic acids . Acid proton theory: acid is a substance capable of releasing a proton referred acids. Stearic acid is an organic acid , a certain acidity. Loss of hydrogen ions combine with calcium metal thing is calcium stearate . 1 , the appearance of nature
Stearic acid is a white or creamy -white powder or crystalline lumps, which has a cross-section of microstrip shiny fine needle crystals; similar grease micro odorless, tasteless. Calcium stearate is a white powder , insoluble in water , cold ethanol and ether, dissolved in hot benzene, turpentine , and other organic solvents. Slightly soluble in hot ethanol and ether. When heated to 400 ℃ slowly decomposed , flammable , met decomposition of stearic acid and corresponding calcium , hygroscopic . 2, use comparison: stearic acid cream and cream for skin care products from these two types of emulsion , so that it becomes a stable white paste. Stearic acid or manufacturing honey and almond milk the main raw material . Stearic acid esters in cosmetics, soap industry is more widely used. Calcium stearate heat stabilizers for PVC and other plastic processing lubricants , mold release agents and the like. In rigid products , and the base of lead salts , lead soap can increase the rate of gelation . Also used in food packaging, medical equipment and other requirements of non-toxic soft film and equipment. Can be made of polyethylene , polypropylene, halogen absorbers to eliminate the adverse effects of residual catalyst on the color and stability. As plasticizers in rubber processing , enabling natural rubber and synthetic rubber to soften the whole , and almost no effect on curing . Also used as polyolefin fibers and molded plastic lubricants , grease thickening agent, textile waterproofing agent, paint flatting agent , plasticizer manufacturing plastic labels and so on. Also used in pencil manufacturing and medicine, perfume industry .