Formula C36H70CaO4 Density 1.08 g/cm³ | Melting point 155 °C | |
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Appearance white to yellowish-white powder |
Global calcium stearate market 2015 2019
Calcium stearate is carboxylate of calcium, classified as a calcium soap. It is a component of some lubricants, surfactants, as well as many foodstuffs. It is a white waxy powder.
Contents
- Global calcium stearate market 2015 2019
- 5 50kg carbon balck zinc oxide calcium stearate vacuum packing machine for valve bags
- Production and occurrence
- Applications
- References
5 50kg carbon balck zinc oxide calcium stearate vacuum packing machine for valve bags
Production and occurrence
Calcium stearate is produced by heating stearic acid and calcium oxide:
2 C17H35COOH + CaO → (C17H35COO)2Ca + H2OIt is also the main component of soap scum, a white solid that forms when soap is mixed with hard water. Unlike soaps containing sodium and potassium, calcium stearate is insoluble in water and does not lather well. Commercially it is sold as a 50% dispersion in water or as a spray dried powder. As a food additive it is known by the generic E number E470.
Applications
Calcium stearate is a waxy material with low solubility in water, unlike traditional sodium and potassium soaps. It is also easy and cheap to produce, and exhibits low toxicity. These attributes are the basis of many of its applications. Related applications exist for the magnesium stearate.