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Pharmaceutical Chemistry
Calcium Stearate
Formula:
CaC36H70O4
GOST/CAS:
CAS 1592-23-0
Calcium Stearate (Pharmaceutical Grade) is a fine, hydrophobic, high-purity powder widely used in the pharmaceutical and food industries. It possesses excellent lubricating and anti-adherent properties. The product is chemically stable, non-toxic, physiologically safe, and fully complies with strict international quality standards (USP/EP/BP). The primary role of this excipient is to ensure a smooth and seamless process during tablet compression and capsule filling of dry powder blends.
Applications
Tablet Manufacturing: Utilized as a highly efficient lubricant. It prevents the powder mass from sticking to the punches and dies of tablet presses, reduces inter-particle friction, and facilitates the smooth ejection of the finished tablet from the die.
Capsule Filling: Applied in the filling of hard gelatin capsules to improve the flowability (glidant properties) of dry powder blends and prevent clumping or caking in dosing devices.
Food Industry & Supplements: Registered as food additive E470. It serves as an emulsifier, stabilizer, and anti-caking agent in the production of sports nutrition, vitamin-mineral complexes, and confectionery products.
Cosmetics: Incorporated into pressed powders, eyeshadows, and dusting powders to improve texture, water resistance, skin adhesion, and to provide a smooth, matte finish.
Key Advantages
High Purity & Safety: Manufactured exclusively from vegetable-based raw materials. It is free from allergens, GMOs, and toxic impurities, fully meeting global pharmacopoeia requirements (Ph. Eur., USP).
Excellent Lubrication: Even at minimal concentrations (0.25% - 2.0%), it effectively reduces friction inside technological equipment, extending the service life of tooling and press components.
Optimal Particle Size Distribution: Features an ultra-fine and uniform particle size, which guarantees homogeneous distribution of the stearate throughout the dry blend volume.
Exceptional Stability: Does not change its color, odor, or chemical structure under standard pharmaceutical manufacturing conditions, preserving the stability of the final dosage forms.
Storage & Transportation
- Store in dry, cool, and well-ventilated warehouses in tightly closed original packaging, away from heat sources, moisture, and direct sunlight.
- Recommended temperature range: from +5°C to +30°C at a relative humidity of no more than 65%.
- Transportation is permitted by all types of covered transport in compliance with standard freight regulations. The product is not classified as hazardous cargo (ADR Class 9 is not applicable).
- Shelf Life: 2–3 years from the date of manufacture (provided the packaging integrity is maintained).
Technical Specifications
Appearance
Fine, homogeneous, white or yellowish-white powder, greasy to the touch
Molecular Weight
607.02 {g/mol}
Assay (as CaO)
9.0% – 10.5%
Melting Point
145°C – 160°C
Loss on Drying 105°C
≤ 4,0%
Free Fatty Acids
≤ 3,0%
Heavy Metals (as Pb)
≤ 10 ppm
Supply info
- Supplied in multi-wall kraft paper bags with a sealed internal polyethylene liner of 20 kg or 25 kg (optimized to protect the product from absorbing moisture).
- Delivered on pallets secured with stretch-hood or shrink-wrap film.