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Magnesium Stearate

Magnesium Stearate

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Magnesium Stearate
Physical properties : Formula Mg(C18H35O2)2 Grades Food, Pharma CAS No 557-04-0 Specification : Product Name Magnesium Stearate...
Physical properties :
FormulaMg(C18H35O2)2
GradesFood, Pharma
CAS No557-04-0


Specification :
Product NameMagnesium Stearate
Appearancewhite, water-insoluble powder.
Assay4-5% on dried basis
Loss on DryingMax 6%
Specific Surface area (BP)3M2/grn-14M2 grn
Particle Size99% Particle passes from 325 mesh
Thermogravityrnetry (BP)BP 2.2.34
Heavy Metal as Lead (%)Max 0.002
Organic Volatile impurities (ppm)Passed
Melting Point °C130 - 150
Freezing Point (°C)54 Min
Assay as MgO (%)6.8 - 8.3
Arsenic as AS2o3 (%)0.0002 max
Free Fatty Acid (%)1.0 Max.
Methyl Stearate (%)40 min
Pseudomonas aeruginosaNegative
Staphylococcus aureusNegative
Clarity of Fatty AcidClear
Stearic AcidNLT 40%
Lead (BP)PPM Max 10
Nickel (BP)PPM Max 5.0
Cadmium (BP)PPM Max 3.0
Chloride (USP/BP/EP)Max 0.1%
Sulphate (USP/BP)Max 1%
Packing25 kgs bag
Shelf Life5 years


Properties :
  • It is used as a release agent and as a component or lubricant in the production of pharmaceuticals and cosmetics.
  • Magnesium stearate is often used as an anti-adherent in the manufacture of medical tablets, capsules and powders.
  • Magnesium stearate can also be used efficiently in dry coating processes.
  • In the production of pressed candies, magnesium stearate serves as a release agent. It is also used to bind sugar in hard candies such as mints.
  • Magnesium stearate is a common ingredient in baby formulas.
  • In the EU and EFTA it is listed as food additive E470b.

Packing :
  • 25 kgs bag
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AVA Chemicals Private Limited