Magnesium Stearate

CAS number: 557-04-0

Molecular formula: C36H70MgO4

molecular weight: 591.2544

Chemical structure:

Product name Magnesium Stearate
Shelf life Two years
Inspection Standard USP32
ItemsSpecificationsResults
CharactersA very fine,light,white     powder,odourless or with a very slight odour of steric acidConforms
Identification A and BCompliesConforms
Acidity  or  alkalinityCompliesConforms
Chlorides≤0.1%<0.1%
Sulphates≤1.0%<1.0%
Lead≤10ppm<10ppm
Loss on drying≤6.0%4.4%
Magnesium4.0~5.0%4.2%

stearic acid composition

stearic acid & palmitic acid composition

≥40%

≥90%

42%

98%

Total bacterial count≤1000cfu/g<1000cfu/g
Total plate count≤1000cfu/gConforms
Yeast&Mold≤500cfu/g<500cfu/g
SalmonellaNegativeConforms
E. coliNegativeConforms
ConclusionIt conforms to USP32.