Magnesium Stearate

CAS #557-04-0



Magnesium Stearate is the simple salt of fatty acid that is produced by two methods: 1) By the reaction of sodium stearate with magnesium salts 2) By treating magnesium oxide with stearic acid


Magnesium distearate; Magnesium octadecanoate; Octadecanoic acid, magnesium salt





Magnesium octadecanoate


Light White Powder

Molar Mass

591.27 g/mol


1.026 g/cm3

Melting Point

88.5 °C

Boiling Point

359.4 °C

Solubility in Water

0.003 g/100 mL (15 °C); 0.004 g/100 mL (25 °C); 0.008 g/100 mL (50 °C)

Vapour Pressure

0.000009 mmHg @ 25.00 °C.

Flash Point

162.40 °C




Faint characteristics odour

APHA Value


Hazard Identification

Not classified as a DG goods

Uses & Applications

Pharmaceutical Industry : Magnesium stearate acts as a flow agent in pharmaceutical industries.It helps in preventing the ingredients of capsules from sticking to each other.Also keeps the  It also keeps the medicines from sticking to the machines, during the manufacturing process. Cosmetics Industry : Magnesium stearate serves as a colourant, an anti-caking agent, and a bulking agent in cosmetics industries. Food Industry : Magnesium stearate is used as a thickener, binder, and emulsifier,lubricant, antifoaming and anti-caking agent in the food industry.

Market Driving Factors

Magnesium Stearate market is expected to grow by >6% of CAGR in next 5 yrs due to increased use of its as a fillers and binders in pharmaceutical industry.

Grades Available

As per the manufacturing process, Elchemy can offer two grades of Magnesium stearates. -Precipitation grade -Fusion grade


Elchemy deals in the Indian origin of Zinc stearates.


Elchemy International offers the below range of packaging for Magnesium Chloride. 20 KG Bags, 400 Kg Big Bags and we do tailor mate packaging as well.

Stability/Shelf Life

Magnesium stearate can be stored in tightly closed containers and should be placed at dry and well ventilated place.It can be stable at Dry and cool places.

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