Magnesium Stearate

Inci Name:

Magnesium Stearate

Chemical Name:
Octadecanoic Acid, Magnesium Salt

Magnesium stearate is an additive commonly found in rubber, plastics, pharmaceuticals and many other products. Created when sodium stearate reacts with magnesium sulfate, it is also known as octadecanoic acid and magnesium salt. To support a wide range of potential applications, Acme-Hardesty manufactures magnesium stearate in kosher, NF and polymer grades.

Uses & Applications

Magnesium stearate is used in the manufacture of pharmaceutical tablets, nutritional supplements and nutraceuticals. In these applications, it serves as an anti-adherent, excipient, mold-release agent and lubricant. It is also used in the processing of rubber and plastics as a de-dusting agent and lubricant. In food and beverage manufacturing, it is a flow enhancer, binder and anti-caking agent, as well as an important component of hard candies and baby formula, among other things.

  • Rubber: De-Dusting Agent, Internal Lubricant, External Lubricant
  • Food and Beverage: Flow Enhancer and Anti-Caking Agent
  • Plastics: ABS / SAN Internal Lubricants
  • Pharmaceuticals: Excipient, Mold Release Agent for Tableting
  • CASE: Lubricants, Neutralizer
  • Nutraceuticals: Excipient, Mold Release Agent for Tableting

Product Details

Kosher, NF, Polymer Grade, Powder

Product Characteristics

Magnesium stearate can be derived from both animal fats and vegetable oils. At Acme-Hardesty, our product is entirely plant-based, as well as GMO- and residual-solvent-free. At no point do we test any of our products on animals. We also strive to ensure our magnesium stearate is free of peanuts, tree nuts, dairy, eggs, fish, gluten and other common allergens. Our magnesium stearate can be used in almost any application. For a complete list of specs and potential uses, download the product data sheet.


Storage and Handling Recommendations

Acme-Hardesty offers magnesium stearate in bags as a fine white powder. It poses an explosive dust risk if not handled in a properly ventilated environment. The melting point of magnesium stearate is between 130 and 150ºC. It will remain stable under normal storage and transport conditions, but you should keep it away from sparks, open flames and sources of heat. Wear protective gloves and an appropriate respirator at all times.

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