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Magnesium stearate is chemical compound with the formula Mg(C18H35O2)2. Magnesium stearate is a fine white power that sticks to your skin and is greasy to the touch. It’s a simple salt made up of two substances, a saturated fat called stearic acid and the mineral magnesium. It is a white, water-insoluble powder. Its applications exploit its softness, insolubility in many solvents, and low toxicity. It is used as a release agent and as a component or lubricant in the production of pharmaceuticals and cosmetics.
It is often used as an anti-adherent in the manufacture of medical tablets, capsules and powders. In this regard, the substance is also useful because it has lubricating properties, preventing ingredients from sticking to manufacturing equipment during the compression of chemical powders into solid tablets; magnesium stearate is the most commonly used lubricant for tablets. However, it might cause lower wettability and slower disintegration of the tablets and slower and even lower dissolution of the drug.
It can also be used efficiently in dry coating processes.
Magnesium stearate is also used to bind sugar in hard candies like mints, and is a common ingredient in baby formulas.
|Molecular weight||591.24 g/mol|
|Description||White powder solid.|
|Melting point||88 O C (190.4O F)|
|Loss on drying||Not more than 6.0%|