UNIZINC ZS (ZINC STEARATE)
GENERAL INFORMATION
UNIZINC ZS is a fine, white powder composed of zinc salts of stearic acid. It functions as an internal and external lubricant in plastic processing, a water-repellent agent in paints, and a flow enhancer in cosmetic powders.
PRODUCT DESCRIPTION
| PROPERTY | VALUE |
|---|---|
| Product Name | UNIZINC ZS (Zinc Stearate) |
| Chemical Name | Zinc Stearate |
| CAS Number | 557-05-1 |
| Molecular Formula | C36H70O4Zn |
| Appearance | Fine, white powder |
| Assay (as ZnO) | 12 – 14% |
| Purity | ≥ 98% |
| Solubility | Insoluble in water, soluble in hot aromatic solvents |
APPLICATION AREAS
| SECTOR | APPLICATIONS |
| Plastics Industry | PVC processing, internal/external lubricant |
| Coatings | Matting and water-repellent agent |
| Cosmetics | Anti-caking and flow agent in powders |
| Rubber | Mold release agent, vulcanization aid |
| Pharmaceuticals | Tablet release and binding agent |
TECHNICAL SPECIFICATIONS
Bulk Density: 0.15 – 0.25 g/cm³
Melting Point: > 120 °C
Moisture Content: ≤ 2.0%
Free Fatty Acid: ≤ 1.0%
Purity: ≥ 98%
Particle Size: D50 ~ 8–12 µm
ADVANTAGES
Excellent lubrication properties
Improves flow and dispersion in powders
Moisture-resistant and hydrophobic
Enhances mold release and surface finish
PACKAGING / STORAGE
Packaging Options: 15 kg or 20 kg PE-lined paper bags or fiber drums
Storage Conditions: Keep in tightly sealed containers in a dry, ventilated area
Shelf Life: 24 months under recommended conditions
SAFETY / HANDLING
Avoid inhalation of fine dust
Use in well-ventilated areas
Refer to SDS for detailed handling and disposal guidance
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