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Pharmaceutical Chemistry
Magnesium Stearate
Formula:
MgC36H70O4
GOST/CAS:
CAS 557-04-0
Magnesium stearate (the magnesium salt of stearic acid) is a fine, lightweight, white powder that is indispensable in the pharmaceutical and nutraceutical industries. It serves as a highly effective lubricant (glidant), preventing the powder mass from sticking to processing equipment during tableting and encapsulation. It possesses excellent hydrophobic properties, ensures accurate dosing uniformity, and significantly improves the flowability of dry blends.
Applications
Tablet Manufacturing: Used as a classic lubricant and glidant. It reduces friction between the powder particles and the die walls, facilitating the smooth ejection of the finished tablet from the press.
Encapsulation: Ensures uniform filling of hard gelatin and vegetable capsules with the powder mass, preventing clumping and adhesion to the encapsulating machine components.
Dietary Supplements & Vitamins: Included in premixes and powder blends to enhance raw material flowability and standardize the weight of individual doses.
Cosmetics Industry: Utilized in the production of compact powders, eyeshadows, creams, and ointments as a texturizer, opacifier, hydrophobic agent, and emulsion stabilizer.
Key Advantages
Excellent Lubricating Properties: Efficiently reduces the adhesion of powders to the metallic surfaces of machinery, even at minimal concentrations (typically 0.25% – 2%).
High Chemical Purity: Fully complies with the strict requirements of international pharmacopoeias (Ph. Eur., USP, BP), containing no toxic impurities or GMOs.
Form Stabilization: Facilitates the formation of a durable tablet structure while preserving the required disintegration profiles in the body.
Safety & Biocompatibility: A non-toxic, hypoallergenic component fully approved for use in both food and pharmaceutical industries.
Storage & Transportation
- Store in dry, cool, and well-ventilated warehouses in the manufacturer's tightly sealed original packaging.
- Avoid exposure to direct sunlight, moisture, and dampness, as the product exhibits hygroscopic properties under high humidity conditions.
- Keep away from strong oxidizing agents and open flame sources.
- Transportation is permitted by all types of covered transport in compliance with standard cargo regulations. The material is classified as non-hazardous for transport.
- Shelf Life: 2–3 years from the date of manufacture (depending on the specific manufacturer's specifications).
Technical Specifications
Appearance
Fine, lightweight, white or almost white powder, greasy to the touch
Molecular Weight
591.24 {g/mol}
Assay (Main Substance)
≥ 98.0%
Magnesium (Mg) Content
4,0% - 5,0%
Loss on Drying
≤ 4,0%
Solubility
Practically insoluble in water, ethanol, and ether
Supply info
- Multi-layer paper bags with an inner polyethylene liner, available in 20 kg or 25 kg.
- Palletized batches can be prepared for large-scale wholesale orders.