Calcium stearate has four production methods

Calcium stearate is a white powder, insoluble in water, cold alcohol and medical ether, soluble in organic solutions such as hot benzene, benzene and banana water, and slightly soluble in hot alcohol and medical ether. Slowly dissolved when heated to 400 ° C, flammable, dissolved into stearic acid and corresponding calcium in case of strong alkali, and has water absorption.

Calcium stearate (Xeno)

Calcium stearate has the following four manufacturing methods:

1. The generation of calcium stearate adds the calcium chloride solution with a content of 1074kg/m3 (10 ° Bé) to the sodium stearate solution prepared above, and carries out a re-decomposition reaction at 65 °C, and the substance calcium stearate is precipitated by deposition. Subsequently, after care, water cleaning, and drying at 90 ° C, the finished product is obtained.

2, 5.60g (0.1mol) of calcium hydroxide floating in 300mL, 55 °C boiling water. Subsequently, the chemically pure 51.4g stearic acid was dissolved in 350ML, 70 °C boiling water, and then 0.75g of diethanolamine was added, and mixed to make its emulsion. The prepared stearic acid moisturizing emulsion is slowly added to the calcium hydroxide mixture within 1 hour, and sufficiently mixed, the milky white insoluble substance, that is, calcium stearate, is filtered out, dried, and the commodity is obtained.

3. Immediate method in the reaction pot equipped with stirring device, the temperature table to add quantitative analysis of stearic acid and CaO, temperature to melt, under continuous mixing slowly add metal catalyst H2O2, and vacuum packaging, the manipulation reflects the temperature at 140 ~ 150 °C, reflecting 1.5 ~ 2.0h. After the reflection is carried out, the goods are fed, refrigerated, and crushed.

4. Compound decomposition method: dissolve stearic acid in boiling water of 20 times the quality, add sodium hydroxide solution in saturated state, and carry out saponification reaction at 75 °C to convert into dilute sodium stearate solution. The calcium chloride solution with a content of 1074kg/m3 was added to the sodium stearate solution, and the complex decomposition reaction was carried out at around 65 °C, and the substance calcium stearate was precipitated by deposition. Subsequently, after care, water cleaning, and drying at 90 ° C, the finished product is obtained.

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