| Applications: It is widely used as a release agent for the production of many kinds of objects rubber, poly urethane, 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 poly olefins. Being lipophilic, it functions as a phase transfer catalyst for the saponification of fats. Zinc stearate is used in cosmetic formulations to increase adhesive properties. It is also used as a coloring agent. This is a mixture of the zinc salts of stearic and palmitic acids. Zinc stearate is primarily used in pharmaceutical formulations as a lubricant in tablet and capsule manufacture at concentrations up to 1.5% w/w. It has also been used as a thickening and opacifying agent in cosmetic and pharmaceutical creams, and as a dusting powder. ZINC STEARATE is a white, hydrophobic powder with a slight, characteristic odor. Insoluble in water, ethyl alcohol and diethyl ether. Soluble in acids. Non-toxic. In technical grades, the percentage of zinc may vary according to the intended use. Products with less than the theoretical amount of zinc are more acidic. Synonyms: Zinc distearate; Zn Stearate; Zincum stearinicum; Zink distearat; Octadecanoic acid, zinc salt; UNII-H92E6QA4FV; A830766; XOOUIPVCVHRTMJ-UHFFFAOYSA-L; Stearic acid, zinc salt; Smiles: CCCCCCCCCCCCCCCCCC(=O)[O-].CCCCCCCCCCCCCCCCCC(=O)[O-].[Zn+2]; Information provided by Alfa Chemistry Materials. |
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