Magnesium Stearate

Magnesium Stearate CAS: 557-04-0 Structure: Specifications: Conforms to standard USP 29 Physical properties: Character: White, tiny and smooth, fluffy powder; insoluble in water, alcohol, ether; slightly dissoluble in hot alcohol and benzene, and can be decomposed bydilute acid; hard to flow,...
Product description

Magnesium Stearate

CAS: 557-04-0

Structure:

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Specifications: 

Conforms to standard USP 29

Text

USP29

Assay%

4.0-5.0(Mg)

Chloride%

≤0.1

Sulfate%

≤1.0

Loss on drying%

≤6.0

Lead ppm

≤10

Acid or Alkalinity

conforms

Stearic acid and plamitic acid %

≥90.0

Total assay(stearic acid)%

≥40

Organic Volatile Impurities

conforms


Physical properties:

Character: White, tiny and smooth, fluffy powder; insoluble in water, alcohol, ether; slightly dissoluble in hot alcohol and benzene, and can be decomposed bydilute acid; hard to flow, Viscous powders.
Particle size: 100 percent through 80mesh sieve.

USE: The product is mainly used as troche and the lubricant of the capsule, or anti-viscous agent, the concentration of which is commonly 0.25-2.0 percent. Because of its hydrophobicity, it can delay the effusing rate of the solid preparation medicament. Thus its use concentrations low by all means, and it should be avoided to be used with medicaments which is not match to the alkaline substance.


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