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Magnesium Stearate BP
Magnesium Stearate BP is a fine, white, hydrophobic powder composed of the magnesium salt of stearic acid. It is widely used in the pharmaceutical industry as a lubricant and anti-adherent in tablet and capsule manufacturing. Due to its excellent flow-enhancing properties, Magnesium Stearate BP improves powder flowability and prevents ingredients from sticking to equipment during processing. It is also used in cosmetics, food, and various industrial applications for its emulsifying and stabilizing properties.
Magnesium Stearate BP
Primary Uses
- Pharmaceutical Industry
- Acts as a lubricant in tablet and capsule formulation to prevent sticking to punches and dies during compression.
- Used as a glidant to improve powder flow during manufacturing processes.
- Serves as an anti-caking agent to enhance the uniformity of powders.
- Cosmetics and Personal Care
- Employed as a thickener and stabilizer in creams, lotions, and powders.
- Used as a lubricant in cosmetic stick formulations (e.g., lipstick).
- Food Industry
- Functions as an anti-caking and flow agent in powdered food products.
- Used as a release agent in food processing.
- Industrial Applications
- Incorporated in plastics, rubber, and adhesives to improve processing and reduce friction.
- Used as a mold release agent in the production of molded goods.
Secondary Uses
- Dietary Supplements
- Used as an excipient and lubricant in the manufacture of dietary and nutritional supplements.
- Textile Industry
- Occasionally used as a softening agent in fabric processing.
1. Basic Identification Attributes
- Chemical Name (IUPAC): Magnesium octadecanoate
- Common/Trade Name: Magnesium Stearate BP
- CAS Number: 557-04-0
- HS Code: 2915.70.00
- Synonyms: Magnesium octadecanoate; Mg Stearate; Magnesium distearate
2. Physical & Chemical Properties
- Physical State: Fine powder
- Color & Odor: White; odorless or slight fatty odor
- Melting Point: 88–90 °C
- Solubility: Insoluble in water; soluble in hot ethanol and ether
- Density: Approx. 1.0 g/cm³
- Appearance: Hydrophobic, free-flowing powder
3. Safety & Hazard Attributes
- GHS Classification: Not classified as hazardous
- Toxicity: Low toxicity; generally recognized as safe (GRAS) for pharmaceutical and food use
- Exposure Limits: No specific occupational exposure limit; avoid inhalation of dust
4. Storage & Handling Attributes
- Storage Conditions: Store in a cool, dry, well-ventilated area away from heat and moisture
- Container Type: Supplied in sealed polyethylene or paper bags
- Shelf Life: Typically 2–3 years if stored properly
- Handling Precautions: Avoid generation of dust; use PPE such as dust masks and gloves if needed
5. Regulatory & Compliance Attributes
- Complies with BP (British Pharmacopoeia) standards and relevant food and pharmaceutical regulations
- Approved as a pharmaceutical excipient and food additive under applicable guidelines
6. Environmental & Health Impact
- Biodegradability: Readily biodegradable
- Ecotoxicity: Low aquatic toxicity
- Bioaccumulation: Not significant
- Carcinogenicity/Mutagenicity: Not classified as carcinogenic or mutagenic
Safety Handling Precautions
- PPE Required: Dust mask or respirator, gloves, safety goggles when handling large quantities
- Handling Guidelines: Use in well-ventilated areas; avoid inhalation and prolonged skin contact
- Storage Measures: Keep containers tightly closed and dry
First Aid Measures
- Inhalation: Move to fresh air; seek medical attention if respiratory irritation develops
- Skin Contact: Wash with soap and water; seek medical advice if irritation occurs
- Eye Contact: Rinse immediately with water for 15 minutes; consult a physician if irritation persists
- Ingestion: Rinse mouth; seek medical attention if large amounts ingested
Firefighting Measures
- Fire Hazards: Combustible under high heat, but generally stable
- Extinguishing Media: Use water spray, foam, dry chemical, or CO₂ extinguishers
- Special Precautions: Wear protective gear and avoid inhalation of smoke or fumes
- Hazardous Combustion Products: Carbon oxides and magnesium oxides may be produced
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