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Zinc Stearate

Zinc Stearate

Overview

Zinc stearate, also known as zinc soap, is a unique oleochemical compound with a pure white appearance and excellent water-repellent characteristics. It is produced through the controlled reaction of stearic acid and zinc oxide. Due to its hydrophobic nature, lubricity, and chemical stability, zinc stearate is widely used as a processing aid, lubricant, and release agent. CORE METCHEM LLP is a trusted manufacturer and supplier of high-quality Zinc Stearate, engineered to meet the evolving needs of modern industries. With controlled production processes and strict quality standards, our zinc stearates deliver consistent performance, excellent functionality, and dependable results across applications. Zinc Stearate is a versatile processing aid used as an anti-caking and texture-enhancing agent in cosmetics, a lubricant and surface-finishing additive in coatings and sealers, and an effective mould-release agent in metal and powder metallurgy applications. It also improves process efficiency and surface quality in plastics and polymers and acts as an internal lubricant and vulcanization activator in the rubber and tyre industry.
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Zinc Stearate

Key Properties

Appearance:

Appearance:

White, fine, free-flowing hydrophobic powder.

Thermal Stability:

Thermal Stability:

Stable at 160 – 180°C, suitable for high-temperature polymer and PVC processing.

Solubility:

Solubility:

Insoluble in water and ethanol; dispersible in hot oils and compatible organic solvents.

Density:

Density:

Approx. 1.03 g/cm³.

Chemical Nature:

Chemical Nature:

Non-toxic, chemically inert, and moisture resistant.

Lubricity:

Lubricity:

Excellent internal and surface lubrication characteristics.

Applications

Zinc Stearate is extensively used in:

Plastics & Polymers
Plastics & Polymers
Rubber & Tyre Industry
Rubber & Tyre Industry
CASE (Coatings, Adhesives, Sealants, and Elastomers)
CASE (Coatings, Adhesives, Sealants, and Elastomers)
Metalworking & Powder Metallurgy
Metalworking & Powder Metallurgy
Pharmaceuticals & Nutraceuticals
Pharmaceuticals & Nutraceuticals
Cosmetics: Anti-caking and texture-enhancing additive
Cosmetics: Anti-caking and texture-enhancing additive
Bond

Technical Specifications

Grades of Zinc Stearate

Grade Name
Appearance
Metal Content %
Ash Content %
Free Fatty Acid
Moisture
Melting Point (°C)
Density (g/l)
Sieve Residue on 200 Mesh
ZS - MB
White Powder
10.45 - 12.46
13.0 - 15.5
2.0 MAX.
1.0 MAX.
118 - 125
250 - 320
1.00 max.
ZS - P
White Powder
10.05 - 11.26
12.5 - 14.0
1.0 MAX.
0.5 MAX.
118 - 123
250 - 320
1.00 max.
ZS - P 500
White Powder
10.45 - 12.46
13.0 - 15.5
1.0 MAX.
0.5 MAX.
118 - 125
200 - 280
NIL
ZS - HS
White Powder
10.05 - 11.26
12.5 - 14.0
1.0 MAX.
0.5 MAX.
118 - 123
240 - 300
1.00 max.
Bond

Key Features & Benefits

Superior Lubrication & Smooth Processing

Reduces friction and improves flow behavior during polymer and rubber processing.

Outstanding Mold-Release Performance

Prevents adhesion to molds in rubber, PU, and thermoplastic operations.

Excellent Hydrophobicity

Improves water resistance and anti-caking properties in formulations.

High Transparency & Gloss

Ideal for transparent films, coatings and masterbatch applications.

Thermal Stability

Performs well under high temperature conditions in plastics and rubber operations.

Enhanced Pigment Dispersion

Improves dispersion quality in paints, inks, masterbatch and color concentrates.

Other product

Calcium Stearate

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