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Magnesium Stearate BP

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Description: A white or almost white. Very fine, Light powder, greasy to touch

TEST SPECIFICATION
Solubility Practically insoluble in water and anhydrous ethanol
Identification:  
A) Freezing Point Minimum 53⁰ C
B) Acid Value 195 to 210
C) Fatty Acid Composition Retention time of test & Reference Solution in Chromagram should be same
D) Magnesium Test A white crystalline precipitate is formed
Acidity or Alkalinity NMT 0.05 Ml. of 0.1M HCl or NaOH
Chloride NMT 0.1%
Sulphates NMT 1.00%
Cadmium as CD NMT 3 Ppm
Lead NMT 10 Ppm
Nickel NMT 5 Ppm
Loss on Drying NMT 6.0%
Microbial Contamination  
1) TAMC NMT 1000 CFU/G
2) TYMC NMT 100 CFU/G
3) E.Coli. Absence
4) Salmonella Absence
ASSAY as Mg (Dried Substance) 4.0% to 5.0%
ASSAY as Fatty Acid NLT 40% Stearic Acid
Sum of Stearic Acid & Palmetic Acid NLT 90%
Residual Solvents Not used


Shelf Life: 5 years

Storage: Keep container tightly closed. Keep container in a ambient condition.

Usages & Application:

  • Used as lubricant in tableting & pharmaceuticals.
  • Works as flattening agent in paints and varnishes.
  • Functions as stabilizer & lubricant in engineering & plastics.
  • Acts as soothing agent in talcum powder & other cosmetics.
  • Serves as emulsifying agent in cosmetics & anti-caking agent in foods.


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