Zinc stearate CAS 557-05-1 AQUA ZINC OCTADECANOIC ACID ZINC SALT STEARIC ACID ZINC SALT

Place of Origin: Sichuan,China (Mainland)
Brand Name: MOSINTER
CAS No.: 557-05-1
Brand: MOSINTER
Molecular formula: C36H70O4Zn
Molar mass: 632.35 g/mol
Appearance: soft, white powder
Density: 1.095 g/cm³
Melting point: 120-130 °C
Solubility in water: insoluble
Boiling point: decomposes
Solubility in benzene: slightly soluble

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Product Description

Payment & Shipping Terms Supply Capacity
Payment Terms:L/C, T/T, WUProduction Capacity:10000T/Year
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Means of Transport:Ocean, Air, LandDelivery Date:within 7 days

Zinc stearate (CAS: 557-05-1)

 

Item

Index

Appearance

White powder

Zinc, %

10.3-11.3

Mp, ≥ ℃

120

Moisture, % ≤

1.0

Free fatty acids, % ≤

0.5

200 mesh pass rate, %

98


Zinc stearate is a "zinc soap" that is widely used industrially. In this context, soap is used in its formal sense, a metal "salt" of a fatty acid. It is a white solid that repels water. It is insoluble in polar solvents such as alcohol and ether but soluble in aromatic hydrocarbons (e.g., benzene and chlorinated hydrocarbons) when heated. It is the most powerful mold release agent among all metal soaps. It contains no electrolyte and has a hydrophobic effect. Its main application areas are the plastics and rubber industry where it is used as a releasing agent and lubricant which can be easily incorporated.

Zinc carboxylates, e.g. basic zinc acetate, adopt complex formulas, and are not simply dicarboxylates of zinc. Instead the formula for most zinc carboxylates is Zn4O(O2CR)6, consisting of a Zn4O6+ core with carboxylate ligands spanning the edges.

Applications

It is widely used as a release agent for the production of many kinds of objects rubber, polyurethane, polyester processing system, powder metallurgy. These applications exploit its "non-stick" properties. In cosmetics, zinc stearate is a lubricant and thickening to improve texture.

It is an "activator" for rubber vulcanization by sulfur and accelerators. As discovered in the early days of vulcanization, zinc has a beneficial effect on the reaction of the sulfur with the polyolefin. The stearate is a form of zinc that is highly soluble in the nonpolar medium of the polyolefins.

Being lipophilic, it functions as a phase transfer catalyst for the saponification of fats.

Niche uses

It is a component of some paints, imparting gloss. As a chief ingredient in "fanning powder", it is used by magicians performing card manipulation to decrease the friction between the cards.

 

Category: Rubber Chemical Auxiliaries


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