Zinc stearate is a white powder, nontoxic, not dissolved in water or ethanol but dissolved in hot organic solvents and acids.
Molecular Formula: Zn(C17H35COO)2
Molecular Weight: 631
CAS No.: 557-05-1
Zinc stearate is a versatile oleochemical compound characterized by its white, powdery form and wide range of industrial applications. Hancore Lubricant LLC’s zinc stearate is derived from vegetable-based stearic acid and zinc salts. It is non-toxic and insoluble in water and ethanol but dissolves in hot organic solvents and acids.
1. Good dispersing properties;
2. Good mold-releasing properties;
3. Good thermal stability.
1. Halogen Absorber in Petrochemicals
Zinc stearate is used in the petrochemical industry as a halogen absorber. Manufacturers employ it to eliminate excess halogen that contributes to the degradation of product stability and quality during advanced polymerization and synthesis processes.
2. Lubricant and Mold-Release Agent for Thermosetting Plastics
Zinc stearate has various applications. It is important in the production of thermoset plastics, such as amino molding compounds and unsaturated polyester resin. It functions effectively as a lubricant and mold-release agent. Smooth mold release is crucial, as it helps prevent damage to the molds and improves the quality of the final products.
3. Stabilizer and Lubricant in PVC Products
Zinc stearate serves two primary functions in PVC products: it acts as both a stabilizer and a lubricant. This dual functionality is highly beneficial – the lubricant improves the thermal stability of PVC formulations while also enhancing processing efficiency, ensuring uniform coverage and consistent quality.
4. Dispersing Agent and Lubricant for Color Masterbatches
In color masterbatches, zinc stearate acts as an effective dispersing and lubricating agent. It ensures even pigment distribution, enhancing processing efficiency while preventing clumping. As a result, finished plastic products exhibit brighter, more uniform colors.
5. Anti-Adhesion Agent in Rubber Products
For rubber manufacturers, zinc stearate provides key benefits by preventing adhesion. It reduces surface stickiness, streamlines processing, and ensures efficient separation between layers or molds during production.
6. Waterproofing Agent for Textiles
“Zinc stearate serves as an effective waterproofing agent in textiles and related applications. It imparts water resistance to materials, ensuring durability and performance in outdoor and industrial textile products.
| Product | Zinc Stearate | Zinc Stearate | Zinc Stearate | |
| Profile | AV300 | AV302S | AV320 | |
| Appearance | White Powder | White Powder | White Pellets | |
| Metal Content (Zn, %) | 10.4~11.3 | 10.3~11.3 | 10.4~11.3 | |
| Free Fatty Acid (%) | ≤0.5 | ≤0.5 | ≤0.8 | |
| Volatile Matter at 105℃ (%) | ≤0.5 | ≤0.5 | ≤0.5 | |
| Melting Point (℃) | 117~125 | 117~125 | 117~125 | |
| Bulk Denisty (g/L) | 220~300 | 300~400 | ≥400 | |
| Sieve Rate (%) | 99.5% pass through 120 mesh | 99.5% pass through 200 mesh | — | |
| Applications | Petro-PE | ● | ● | ● |
| Petro-PP | ◎ | ● | ⊗ | |
| Petro-PS | ⊗ | ● | ⊗ | |
| Master Batch | ● | ● | ● | |
| EVA | ● | ● | ⊗ | |
| PVC | ● | ● | ⊗ | |
| Composite | ◎ | ◎ | ⊗ | |
| Papermaking | ● | ◎ | ⊗ | |
| Packaging | 20 kg/bag | 25 kg/bag | 25 kg/bag | |
Note:
● Excellent, recommended use
◎ Good, applicable
⊗ Not recommended to use
— Not Applicable
The advised dosage is 0.1%~6.0% except PVC stabilizer recommended formula, detail dosage will be advised and fixed by detail formula, can provide differentiated products or solutions according to customer requirements.
Storage and transport under a shady, cool, and ventilated environment; Avoid acid, alkal, and corrosive substances. Keep it away from the humidity, hotness, fire, and corrosion.
In accordance with Directive 1999/45/EC, zinc stearate belongs to not dangerous.
This product can invade the human body through the skin, eyes, or breathing. This may cause harm to people.
Breathing in zinc stearate dust for a long time can cause pneumoconiosis. This condition includes symptoms like shortness of breath, cough, and sputum. Short-term exposure may lead to bronchopneumonia. Noted that the product can burn.