| Customization: | Available |
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| CAS No.: | 557-05-1 |
| Formula: | C36h70o4zn |
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Zinc stearate is a white powder with the chemical formula C36H70O4Zn, a molecular weight of 632.348, and a CAS registration number of 557-05-1. It is insoluble in water, but soluble in hot solvents such as ethanol and benzene. The density of zinc stearate is 1.1 g/cm³ and the melting point is 130°C.
Physical and chemical properties
Zinc stearate is stable under normal conditions, but may decompose at high temperatures. It is insoluble in water and alcohol solvents, but slightly soluble in acid. The preparation methods of zinc stearate mainly include water method and melting method, which react stearic acid with sodium hydroxide to form sodium stearate, and then react with zinc sulfate to form zinc stearate precipitation, and then wash, dry and other processes to obtain the finished product.
Uses
Zinc stearate is widely used in many fields:
Lubricant and release agent: It is used as an external lubricant and release agent in the processing of plastics such as styrene resin, phenolic resin, and amino resin, and has excellent lubricity and release properties. Vulcanization activator and softener: In the rubber industry, zinc stearate is used as a vulcanization activator and has the function of a softener, which can improve the processing performance of rubber and the physical and mechanical properties of products.
Heat stabilizer: It is used as a heat stabilizer for plastic products such as PVC, effectively preventing degradation during processing and improving the heat resistance and weather resistance of the product.
Paint matting agent and coating additive: In the paint and coating industry, zinc stearate is used as a matting agent and a new pigment, which can enhance the hardness, waterproofness and sun protection effect of the paint film.
Cosmetic ingredient: Zinc stearate is also widely used in cosmetics, such as lipstick, eye shadow and other products, to increase the smoothness and durability of the product.
Safety and health effects Zinc stearate is safe under normal use, but may cause allergic reactions in some cases. Therefore, you need to pay attention to your personal physical reaction when using products containing zinc stearate.
| Zinc stearate Basic information | |
| Product Name: | Zinc stearate |
| CAS: | 557-05-1 |
| MF: | C36H70O4Zn |
| MW: | 632.33 |
| EINECS: | 209-151-9 |
| Zinc stearate Chemical Properties | |
| Melting point | 128-130 °C (lit.) |
| density | 1.095g/cm3 |
| Fp | 180ºC |
| solubility | alcohol: insoluble(lit.) |
| form | Powder |
| color | White |
| Water Solubility | Insoluble |
| Merck | 1,410,158 |
| BRN | 3919706 |
| Stability: | Stable. Incompatible with strong oxidizing agents. |
| CAS DataBase Reference | 557-05-1(CAS DataBase Reference) |
| NIST Chemistry Reference | Zinc(II) n-octadecanoate(557-05-1) |
| EPA Substance Registry System | Zinc stearate (557-05-1) |
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