Magnesium stearate is widely used in cosmetics, foods, and pharmaceutical formulations.It is also used in barrier creams.
Magnesium stearate is a very fine, light white, precipitated or milled, impalpable powder of low bulk density, having a faint odor of stearic acid and a characteristic taste. The powder is greasy to the touch and readily adheres to the skin. Application
Magnesium stearate is widely used in cosmetics, foods, and pharmaceutical formulations. It is primarily used as a lubricant in capsule and tablet manufacture at concentrations between 0.25% and 5.0%w/w. It is also used in barrier creams.
Specificaiton Crystalline forms High-purity magnesium stearate has been isolated as a trihydrate, a dihydrate, and an anhydrate.
Density (bulk) 0.159 g/cm3 Density (tapped) 0.286 g/cm3 Density (true) 1.092 g/cm3 Flash point 2508C Flowability Poorly flowing, cohesive powder. Melting range: 117-1508C (commercial samples); 126-1308C (high purity magnesium stearate). NIR spectra see Figure Solubility Practically insoluble in ethanol, ethanol (95%), ether and water; slightly soluble in warm benzene and warm ethanol (95%). Specific surface area: 1.6-14.8m2/g
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