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Calcium stearate is a white, powdery chemical compound with a variety of industrial applications, primarily as a lubricant and release agent. It is the calcium salt of stearic acid [1].
What is calcium stearate used for?
Calcium stearate functions as an anti-caking agent, lubricant, and release agent in several industries. In the pharmaceutical sector, it is used in tablet manufacturing to prevent sticking to machinery and improve flow properties [2]. In the plastics industry, it serves as a lubricant and stabilizer [3]. It also finds use in the food industry as an additive to prevent caking in powders [4].
How is calcium stearate made?
Calcium stearate is synthesized through a chemical reaction, typically involving the precipitation of calcium stearate from a solution of calcium chloride and sodium stearate, or by reacting calcium hydroxide with stearic acid [1].
Where can I find safety information about calcium stearate?
Safety information regarding calcium stearate, including its handling and potential hazards, can be found in Material Safety Data Sheets (MSDS) provided by manufacturers and chemical suppliers. Generally, it is considered to have low toxicity, but dust can cause respiratory irritation [1].
What are alternatives to calcium stearate?
Depending on the application, alternatives to calcium stearate may include other metallic stearates like magnesium stearate, zinc stearate, or aluminum stearate, each offering slightly different properties for lubrication and release [1]. In food applications, other anti-caking agents are also available.
Who manufactures calcium stearate?
Numerous chemical companies worldwide produce and supply calcium stearate. Specific manufacturers can be identified through chemical supplier directories and online marketplaces specializing in industrial chemicals.