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Zinc Stearate

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Zinc Stearate

Zinc Stearate, a widely utilized metallic soap, plays a pivotal role in various industries due to its unique properties. This fine, white powder is commonly employed as a lubricant and release agent in the production of rubber, plastic, and polyurethane components. With its exceptional ability to repel water and enhance the flow of powders, Zinc Stearate finds applications as a stabilizer and anti-caking agent in the pharmaceutical and powder metallurgy industries. Additionally, its role in the cosmetics and personal care sector involves serving as a texturizing agent and providing a smooth, silky feel in powders and creams. Renowned for its heat stability, it is also used in the processing of PVC and other polymers.

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Zinc Stearate

Functions and characteristics

1. PVC Non-Toxic Stabilizer: Zinc Stearate excels as a PVC stabilizer, ensuring the non-toxicity of the final product. It contributes to stabilizing PVC formulations, enhancing their heat resistance and overall performance in various applications, such as in the production of pipes, profiles, and cable insulation.

2. Release Agent in Cosmetics and Styrene Resin: In cosmetics, Zinc Stearate acts as an effective release agent, imparting a smooth texture to powders and creams. Additionally, it finds application in the styrene resin industry, serving as a release agent and contributing to the processing efficiency of styrene-based materials.

3. Rubber Softener and Release Agent: Within the rubber industry, Zinc Stearate functions as both a softener and a release agent. It enhances the flexibility of rubber products while facilitating their release from molds during the manufacturing process.

4. Textile Polishing Agent: Zinc Stearate is utilized as a textile polishing agent, contributing to the finishing and quality of textile materials. Its properties aid in achieving a desired texture and appearance in textiles.

5. Paint Flatting Agent: In the paint industry, Zinc Stearate serves as a flatting agent, contributing to the matting or dulling of finishes. This characteristic enhances the aesthetic qualities of paints, particularly in applications where a less glossy appearance is desired.

6. Technical Indicators Compliance: Meeting the technical indicators outlined, including zinc content, free acid (stearic acid) levels, heating loss, melting point, and fineness, ensures the consistency and quality of Zinc Stearate in various applications. The specified criteria align with industry standards (HG/T 3667-2012), affirming its reliability and suitability for diverse industrial processes.

7. Packaging and Storage: Zinc Stearate is conveniently packaged in 25kg bags, emphasizing ease of handling. Its storage in a cool and ventilated place ensures the preservation of its properties and maintains its effectiveness over time, underlining its practicality in manufacturing environments.

Technical indicators: (HG/T 3667-2012)

Items Premium grade First grade Qualified
Appearance White powder
 Zinc content% 10.3~11.3 10.3~11.3 10.0~11.5
Free acid(stearic acid),%≤ 0.8 1.0 1.5
Heating loss,%≤ 0.8 1.0 1.5
Melting point,℃ 120±5 120±5 120±5
Fineness (through the test screen), %≥ 99.0 (0.045mm) 99.5 (0.075mm) 95.0 (0.075mm)

Packing, storage and transportation: 25kg/ bag, stored in cool and ventilated place

Major Applications

Pvc industry

A major application of Zinc Stearate lies in the PVC industry, where it serves as a non-toxic stabilizer. By contributing to the stabilization of PVC formulations, Zinc Stearate enhances the heat resistance and overall performance of PVC products. This is crucial in the manufacturing of items such as pipes, profiles, and cable insulation, where stability and non-toxicity are paramount.

Plastic industry

Zinc Stearate serves as a paint flatting agent in the paint industry. This application involves imparting a matte or less glossy finish to paint formulations, contributing to aesthetic preferences in paints and coatings.


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