Magnesium stearate
Pharmaceutical grade (USP/EP/BP/JP/CP)
science Other reagents with same CAS 557-04-0
blur_circular Chemical Specifications
description Product Description
Widely used as a flow agent in pharmaceutical manufacturing, it prevents ingredients from sticking to machinery during tablet compression. It ensures consistent powder flow and uniform dosage in tablets and capsules. Also serves as a lubricant in dietary supplements to improve production efficiency. Commonly found in cosmetics, where it acts as a binder and texturizer, helping products maintain shape and improve application feel. Its water-repellent properties enhance the stability of powders in makeup like blush and foundation. Used in some food products as an anti-caking agent to keep powders free-flowing. Additionally, it is employed in the plastics and resin industry to improve molding properties and reduce particle adhesion.
format_list_bulleted Product Specification
| Test Parameter | Specification |
|---|---|
| Appearance | White Solid |
| Acid Value of Fatty Acids | 98-100 mgKOH/g |
| Fatty Acid GC Retention Time | conforms |
| ICP | Confirmed |
| Chloride (Cl-) | 0-0.1% |
| Sulphates | 0-0.5% |
| Iron(Fe) | 0-0.01% |
| Heavy Metals (total) | 98-100 ppm |
| Lead(Pb) | 0-2 ppm |
| Arsenic(As) | 0-3 ppm |
| Nickel(Ni) | 0-5 ppm |
| Cadmium(Cd) | 0-1 ppm |
| Loss on Drying(105°C) | 0-4% |
| Magnesium(Mg) | 4-5% |
| Sieve Residue at 200 mesh (75μ) | 0-1% |
| Bulk density | 140-200 g/L |
| Oxide | 6.65-8.3% |
| Fatty Acid Composition(C18) | ≥40% |
| Fatty Acid Composition(C16 + C18) | ≥90% |
| RESIDUAL SOLVENTS | pass |
| TOTAL AEROBIC MICROBIAL COUNT | 0-1000 cfu/g |
| Yeasts and moulds | ≤100 cfu/g |
| ESCHERICHIA COLI (ABSENT IN 1 G) | pass |
| SALMONELLA (ABSENT IN 10 G) | passes test |
| Specific surface area | 1-7 m2/g |
| Particle Size Distribution(typical)D10% | 2.5-2.9 μm |
| Particle Size Distribution(typical) D50% | 9.0-11.4 μm |
| Particle Size Distribution(typical)D90% | 19.8-24.2 μm |
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