The application of lead stearate in industry
Lead Stearate (chemical formula: Pb(C₁₈H₃₅O₂)₂) is a metallic soap compound synthesized by reacting stearic acid with lead salts. This product appears as a white to pale yellow fine powder, offering exceptional lubricity, thermal stability, and hydrophobic properties.
Key Specifications
Parameter | Specification |
Appearance | White to pale yellow fine powder |
Purity | ≥98% |
Lead Content (Pb) | 28-30% |
Melting Point | 105-115°C |
Density (20°C) | 1.4-1.6 g/cm³ |
Moisture Content | ≤0.5% |
Solubility | Insoluble in water; slightly soluble in ethanol and oils |
CAS Number | 1072-35-1 |
Applications
1.Plastics & Rubber Industry
Acts as a thermal stabilizer for PVC, preventing degradation and discoloration during processing.
Enhances anti-aging properties and surface smoothness of rubber products.
2.Lubricants & Release Agents
Used as a release agent in metal die-casting and plastic molding to reduce friction and adhesion.
Additive in high-temperature greases to improve lubrication under extreme conditions.
3.Coatings & Inks
Hydrophobic additive in waterproof coatings, improving weather resistance and durability.
Dispersant for pigments in inks to ensure uniform printing quality.
4.Other Industrial Uses
Auxiliary agent in ceramic glazes to optimize sintering performance.
Component in encapsulation materials for specific electronic comp
Packaging & Storage
Packaging: 25 kg/bag (inner polyethylene-lined bag with an outer kraft paper or moisture-proof woven bag), or customized packaging (e.g., drum).
Storage: Store in a cool, dry, well-ventilated area away from acids, oxidizers, heat, and open flames.
Shelf Life: 24 months in unopened original packaging.
Safety & Compliance
Health Hazards: Contains toxic lead compounds! Avoid inhalation, skin/eye contact. Use PPE (gloves, goggles, dust masks).
Spill Handling: Collect spills with dry tools and dispose of in sealed containers per hazardous waste regulations.
Environmental Compliance: Do not discharge into water or soil. Comply with local heavy metal waste standards (e.g., EPA, EU RoHS exemptions).
Transport: Classified as hazardous (UN 3077, Class 9). Label with "Toxic" and follow GHS guidelines.