Calcium stearate is a type of metallic soap that is made by reacting stearic acid with calcium oxide. This additive is widely used in various industries due to its excellent properties. In this article, we will discuss the properties and applications of calcium stearate.

Properties of calcium stearate

Calcium stearate is a white, odorless powder that is insoluble in water. It has a melting point of about 140°C and a boiling point of about 600°C. This additive is stable at high temperatures and has excellent lubricating properties. It is also non-toxic, non-corrosive, and non-flammable.

Applications of calcium stearate

Plastics industry

Calcium stearate is widely used in the plastics industry as a lubricant, release agent, and stabilizer. It improves the flow of plastics during processing and prevents sticking to molds and other equipment. It also contains the buildup of static electricity and reduces the formation of bubbles.

Paints and coatings industry

Calcium stearate is a flatting agent in paints and coatings. It gives a matte finish to the surfaces and reduces the gloss level. It also acts as a rheology modifier, improving the paint’s flow and leveling.

Pharmaceuticals industry

The pharmaceutical industry uses calcium stearate as a lubricant and flow agent. It improves the flow of powders during processing and prevents sticking to the equipment. It is also used as a diluent and filler in tablets and capsules.

Food industry

Calcium stearate is used as an anti-caking agent in the food industry. It prevents the formation of lumps and improves the flow of powdered products. It is also used as a release agent in baking and confectionery products.

Personal care industry

Calcium stearate is used as an emulsifier and thickener in the personal care industry. It stabilizes the emulsion and improves the texture of creams and lotions.

Other applications

Calcium stearate is also used in rubber, textiles, and paper industries. It is used as a release agent and a processing aid in the rubber industry. It is used as a lubricant and a softener in the textile industry. In the paper industry, it is used as a water-repellent and a coating agent.

Calcium stearate is a multi-purpose additive widely used in various industries due to its excellent properties. It is non-toxic, non-corrosive, and non-flammable, making it safe. It’s lubricating, release, and stabilizing properties make it an indispensable additive in the plastics, paints, coatings, pharmaceuticals, food, and personal care industries.