Product Name: Magnesium stearate

CAS No.: 557-04-0

EINECS No.: 209-150-3

Molecular Formula: C36H70MgO4

Molecular Weight: 591.24

Brief Introduction:

Magnesium stearate, with a chemical formula of C36H70MgO4 and a molecular weight of 591.24, is an organic compound. It is a white, non-sandy fine powder that feels greasy when in contact with the skin. Insoluble in water, ethanol or ether, it is mainly used as lubricant, anti-sticking agent and glidant. It is especially suitable for the granulation of oils and extracts, and the granules produced have good fluidity and compressibility. Used as a glidant in direct compression. It can also be used as a filter aid, clarifying agent and dripping agent, as well as a suspending agent and thickening agent for liquid preparations.

Specifications of our Magnesium Stearate USP43-NF38:

Test Items	Specifications
Characteristics	This product is a white, light and non-sandy fine powder with a slight peculiar smell; it is insoluble in water, ethanol or ether.
Identification 1: Identification of Fatty Acids	The retention time of the two main peaks of the test solution should be consistent with the retention time of the two main peaks of the reference solution.
Identification 2: Magnesium Salt Identification Reaction	Should be positive
Acidity or alkalinity	Meets the requirements
Loss on Drying	Not more than 6.0%
Chloride	Not more than 0.1%
Sulphates	Not more than 1.0%
Lead(Pb)	Not more than 10 ppm
Cadmium(Cd)	Not more than 1 ppm
Nickel(Ni)	Not more than 5 ppm
Stearic Acid	Not less than 40.0%
Stearic Acid & Palmitic Acid	Not less than 90.0%
Assay(Magnesium)	4.0% ~ 5.0%
Total Plate Count	Not more than 1000 CFU/g
Moulds & yeasts	Not more than 500 CFU/g
Escherichia coli	Negative
Salmonella	Negative
Specific surface area	/

Application Field:
1. Magnesium stearate is used as a heat stabilizer for polyvinyl chloride, as well as cosmetic flour, emollient ointment and pharmaceutical tablet raw materials (excipients, lubricants); it is used in school wood powder to make it lubricated, bright and transparent; Used as a transparent flatting agent in the paint industry.

2. Widely used in food, medicine, paint, plastic, rubber, textile, etc.

3. Magnesium stearate is a new type of pharmaceutical excipient, which can be used as a film-forming coating material for solid preparations, a thickener and suspending agent for colloidal liquid preparations, etc.

4. Used in powder products in cosmetics to improve adhesion and lubricity.

Packaging:
Woven bag for external use, lined with high-pressure polyethylene film bag, net weight 20kg; can also be packed according to the specific requirements from customers.

Storage Conditions:
Preserved in unopened original containers in a cool dry and ventilated place before using; kept away from direct sunlight, heat and moisture.

Shelf Life:
24 months if stored under above conditions.