Calcium stearate white powder, insoluble in water, cold ethanol and Ether is soluble in hot organic solvents such as benzene, benzene and turpentine, and slightly soluble in hot ethanol and ether. It decomposes slowly when heated to 400°C and is flammable. It decomposes into stearic acid and corresponding calcium salts when exposed to strong acid and is hygroscopic. Calcium stearate has a wide range of uses. It can be used as a lubricant, sliding agent, heat stabilizer, release agent, accelerator, etc. in the plastics, machinery, rubber, paint and ink industries.
Calcium stearate plays a decisive role in some work processes. Therefore, we need to learn to distinguish whether it is true or false when choosing, so as not to affect the quality of work. Then, the identification methods are: Which ones?
The following supplier of calcium stearate will introduce to you how to identify the authenticity of calcium stearate:
Production of calcium stearate Process:
There are two production processes for calcium stearate: dry production and saponification method. The pH of calcium stearate produced by dry method is alkaline, and the calcium stearate produced by saponification method has an alkaline pH. Calcium fatty acid is neutral.
We have learned about the preparation method and production process. Now I will formally introduce the commonly used methods to identify the authenticity of calcium stearate: phenolphthalein indicator test, heating method and understanding the market conditions.
Phenolphthalein indicator test:
If calcium stearate is produced by dry method, so the PH is alkaline, the actual color is red; if Using the saponification method of calcium stearate, there will be no discoloration.
Heating method:
Add some calcium stearate in a beaker, and then heat it on the fire. If it looks like a paste, it means stearic acid Calcium is fake
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