Here are several production methods for calcium stearate

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It is a common saturated long-carbon-chain fatty acid. The hydrophilic carboxyl group and the lipophilic carbon chain end are both present in the stearic acid. The surface is hydrophilic of the nano-calcium carbonate, so it is coated with stearic acids to increase its lipophilicity. The large surface area of the calcium carbonate and its high specific energy can be beneficial when it is used in rubber, plastics or advanced inks. The bond between the two can enhance the performance of the product and make it brighter.
Calcium stearate, which is white, is soluble only in organic solvents, such as hot benzene. It is combustible and slowly decomposes when heated up to 400degC. If a strong acid is used, it will decompose into stearic acids and the calcium salt corresponding to that acid.

Four different production methods of calcium stearate

1. The synthesis is calcium stearate. The sodium stearate and calcium chloride solutions are mixed together at 65degC. Precipitation separates calcium stearate. The final product is obtained after it has been filtered, cleaned with water and then dried at 90degC.

2. In 300mL hot water, add 5.60g of calcium oxide (0.1mol). Pour 51.3g of stearic pure acid in 350mL at 70°C hot water, and add 0.75g to diethanolamine. Stir it up to emulsify. The prepared stearic-acid emulsion, after being fully mixed, was slowly added to the suspension of calcium oxide within 2 hours.

3. The catalyst H2O2 is added slowly under constant stirring to the reaction pot. The reaction lasts 1.52.0h. After the reaction, the material must be discharged, cooled, and crushed in order to obtain the finished product.

4. Metathesis method – dissolve stearic acids in hot water 20 times their mass, add caustic soda saturated solution, and perform saponification reactions at around 75degC. You will get dilute sodium stearate. Then, the sodium stearate and calcium chloride solutions were mixed together. Metathesis reaction took place at 65 degrees Celsius, and calcium stearate precipitated. Then, it is filtered and washed in water before being dried at around 90degC.
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