CAS · 557-04-0
Product Overview
Magnesium Stearate丨CAS 557-04-0 is a fine, white powder composed of magnesium salts of stearic acid. It is widely used across various industries, particularly in pharmaceuticals, nutraceuticals, and cosmetics, due to its excellent lubricating and flow-enhancing properties.
Product Specifications
| Property | Specification |
|---|---|
| Grade | CP2020 |
| Appearance | A white, very fine, light powder, greasy to touch |
| Assay (anhydrous basis, 105°C till a constant weight) | 95% min |
| Assay (Mg) | 4% - 5% |
| Stearic acid & palmitic acid | 90% min |
| Stearic acid | 40% min |
| Loss on drying | 5.0% max |
| Chloride | 0.1% max |
| Sulphates | 0.6% max |
| Cadmium | 3 ppm max |
| Nickel | 5 ppm max |
| Heavy metals (as Pb) | 10 ppm max |
| TAMC | 1000 cfu/g max |
| TYMC | 100 cfu/g max |
| Escherichia coli | Absent |
| Test for fatty acids | Passes test |
| Test for Magnesium | Passes test |
Applications
1. Pharmaceutical Industry:
- Tablet and Capsule Manufacturing: Magnesium stearate is a common excipient in tablet and capsule production. It acts as a lubricant to reduce friction between particles and machinery during production, ensuring smooth and efficient processing.
- Flow Agent: Its ability to improve the flowability of powders makes it indispensable in high-speed tablet presses.
2. Nutraceuticals:
- Dietary Supplements: In the nutraceutical industry, magnesium stearate ensures uniform filling of capsules and consistent compression of tablets. It also prevents active ingredients from sticking to equipment.
3. Cosmetics:
- Powders and Creams: Magnesium stearate is used in cosmetics to provide a smooth texture and enhance the spreadability of powders and creams. Its hydrophobic properties also improve the longevity of cosmetic formulations on the skin.
4. Food Industry:
- Food Additive: Magnesium stearate is used in small quantities as an anti-caking agent to keep powders, such as spices and supplements, free-flowing.
Benefits
1. Improved Manufacturing Efficiency:
- Lubrication: By minimizing friction during tablet or capsule production, magnesium stearate ensures efficient operation and reduces wear on equipment.
- Enhanced Flow Properties: It prevents powder agglomeration, facilitating consistent and high-speed production.
2. Uniform Dosage:
- Consistency in Formulation: The anti-adherent properties of magnesium stearate allow for accurate and uniform distribution of active ingredients in tablets or capsules.
3. Stability of Products:
- Moisture Resistance: Its hydrophobic nature helps protect formulations from absorbing excess moisture, maintaining the integrity and shelf life of the final product.
4. Cost-Effectiveness:
- Low Usage Levels: Magnesium stearate is highly effective at low concentrations (typically 0.25–5%), making it an economical choice for manufacturers.
Conclusion
A concise summary and suitability assessment for this product is available on request. Contact our team to discuss whether it fits your process and quality requirements.