- Chemical Name:
- Octadecanoic Acid, Magnesium Salt
- Product Details & InformationMagnesium 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
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
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.
- Grades and Forms Available
Kosher, NF, Polymer Grade, Powder
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.
Download the magnesium powder MSDS for a complete list of precautions when working with this product.
Request a Quote Today
Acme-Hardesty magnesium stearate is used by many of North America’s leading manufacturers. With a more than 70-year history of leadership in the field of sustainable chemical production, we are an ideal partner to any business concerned about environmental responsibility. To obtain a quote for any quantity of magnesium stearate, contact us today.
- Shelf Life
Two Years from Date of Manufacture when stored according to MSDS recommendations
- INCI Name
|Magnesium Content %||4 – 5||—|
|Aerobic microbial count||1000 per gram maximum||—|
|Total molds and Yeasts count||500 per gram maximum||—|
|Loss on Drying %||5.5 maximum||—|
|Heavy Metals (Pb), ppm||<10||—|
|Organic Volatile Impurities||Conforms||—|
|Chlorides %||0.1 maximum||—|
|Sulfates %||1.0 maximum||—|
|Residual Solvents||7 – 9||—|
|Free Fatty Acid %||1.5 maximum||—|
|Melting Point, ºC||130 – 150||—|
|Fineness (residue on 325 mesh) %||0.5 maximum||—|
|Bulk Density (g/cc)||0.25 max||—|