Zinc Stearate is a soap that in this context, soap is used in its formal sense, a metal salt of a fatty acid. It is a soft white powder that is combustible.

Product Name: Zinc Stearate
Chemical formula: C36H70O4Zn

What is Zinc Stearate?

It is an insoluble substance in any of the organic solvents and water. It dissolves in aromatic organic solvents such as benzene and chlorine hydrocarbons when heated. It also turns into a jelly as soon as it cools. If it is in the presence of a strong acid, it decomposes into zinc and stearic acid.

Zinc Stearate
Zinc metal

 

Chemical behavior of Zinc Stearate

This material has lubricating and hygrometric properties. It is also non-toxic, non-polluting and non-hazardous. Because zinc stearate is soluble in benzene and calcium stearate is insoluble in benzene, these two substances can be separated.

Chemical behavior of Zinc Stearate based on solubility and physical state

It is an insoluble substance in any of the organic solvents and water. It dissolves in aromatic organic solvents such as benzene and chlorine hydrocarbons when heated.

Separation of Zinc from Zinc Stearate

It also turns into a jelly as soon as it cools. If it is in the presence of strong acid, it decomposes into zinc and stearic acid.

Liberating power

Since it has no electrolyte and has hydrophobic properties, it is the most powerful mold release agent among all metal soaps.

Applications of Zinc Stearate in various industries

This material is often used in rubber and plastics industries, Used in industry as a lubricant and release agent.

Zinc Stearate application summary

  • Used in rubber, plastic, polyester, coating, printing and PVC industries.
  • It is used as a smoothing and lubricating agent of varnishes tablets, powders, cosmetics and medicinal ointments production. It is also a thickening agent in the cosmetics industry.
  • Used as a desiccant, lubricant and dusting agent in tires
  • As a waterproof agent for paper, concrete and mineral wool industries

Analysis of Zinc Stearate light

Physical form at room temperature

Solid

Appearance

Powder

Colour

White

Melting point

120 c˚

Bulk density

180 g/l

% Watere content

Max 2

Free fatty acid %

0.5-1.0

Ash content%

12-15

Zn content%

11

Analysis of Zinc Stearate heavy

Physical form at room temperature

Solid

Appearance

Powder

Colour

White

Melting point

120-125 c˚

Bulk density

350 g/l

% Watere content

Max 0.5

Free fatty acid %

0.5-1.0

Ash content%

12-15

Zn content%

11

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