Chemical Name: Calcium Stearate (CAS No.: 1592-23-0)
Molecular Formula: Ca(C₁₈H₃₅O₂)₂
Appearance: Fine white powder
Calcium stearate is a metal soap lubricant widely used in plastics, rubber, and coatings. It acts as both an internal lubricant (reducing polymer melt viscosity) and external lubricant (improving mold release), making it indispensable for PVC processing.
Dual Function – Lubrication + thermal stabilization (for PVC)
Cost-Effective – Lowest price per kg among metal stearates
Regulatory Compliance – FDA, EU 10/2011 (food contact), RoHS, REACH
Easy Dispersion – Low-dusting grades available
|
Parameter |
Specification |
Test Method |
|
Calcium Content |
6.5–7.5% |
EDTA Titration |
|
Melting Point |
150–155°C |
DSC |
|
Free Fatty Acid |
≤0.5% |
ISO 660 |
|
Moisture |
≤1.0% |
Karl Fischer |
|
Bulk Density |
0.3–0.5 g/cm³ |
ISO 697 |
|
Particle Size (D50) |
5–15 μm |
Laser Diffraction |
General-purpose PVC processing
For automated feeding systems
FDA 21 CFR §178.2010 compliant
Pipes & Profiles: Reduces die buildup (0.3–0.8 phr)
Cables: Improves extrusion speed (0.5–1.5 phr)
Films/Sheets: Enhances surface smoothness
Color Masterbatches: Prevents pigment agglomeration
Filler Masterbatches: Disperses CaCO₃/talc (1–3%)
Rubber Compounding: Acts as mold release agent
ABS/PS: Flow promoter (0.2–0.5 phr)
Higher Purity – 99% active content (vs. 95–97% competitors)
Custom Particle Sizing – From 3 μm (micro-powder) to 50 μm
Global Compliance – REACH registered, Halal/Kosher certificates available
Technical Support – Free formulation optimization guidance
- Lower Dosage Needed: 20% less than stearic acid in PVC stabilizers
- Energy Reduction: Cuts extrusion torque by 15–20%
- Packaging: 25 kg multi-layer paper bags / 500 kg pallets
- Documents: COA, MSDS, REACH, FDA compliance certificates
