Magnesium Stearate (Pharmaceutical Grade)
CAS Number: 557-04-0
Pharmaceutical grade Magnesium Stearate is the most widely used lubricant in tablet and capsule manufacturing, preventing sticking of materials to punch faces and die walls during compression. It is used at low concentrations (0.25–2%) and is compatible with a broad range of APIs. Both vegetable-derived and synthetic grades are available to meet diverse regulatory and halal/kosher requirements.
Technical Specifications
| appearance | White fine powder, slight fatty odor |
| assay (as MgO, %) | 6.8–8.3 |
| heavy metals (ppm) | ≤20 |
| loss on drying (%) | ≤6.0 |
| fatty acid composition | Stearic/palmitic ≥90% |
| specific surface area (m²/g) | 1.5–7.0 |
Applications
- Tablet and capsule lubricant
- Prevents sticking to punch and die
- Powder flow aid
- Glidant in capsule filling
- Cosmetic and nutraceutical lubricant
Key Features
- Excellent lubrication at low concentrations
- Vegetable and synthetic grades available
- Wide API and excipient compatibility
- USP/NF, EP, JP, ChP compliant
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CAS Number
557-04-0
Category
Pharmaceutical ExcipientsAvailability
In StockSample
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