
Lithium stearate is a white powder with the chemical formula C18H35LiO2 and CAS number 4485-12-5. It is the lithium salt of stearic acid. This product is supplied by our factory at the best price in the market. Lithium stearate has a melting point of around 220 - 225 °C. It is insoluble in water but soluble in hot ethanol. The density of lithium stearate is approximately 1.025 g/cm³. It has excellent lubricating properties, high temperature stability, and good water - repellency.
1. **Lubricant**: Lithium stearate is widely used as a lubricant in various industries. In the automotive industry, it is used in automotive greases. These greases can reduce friction between moving parts, such as in bearings, gears, and joints, which helps to improve the efficiency and lifespan of automotive components. In the machinery industry, it is also an essential lubricant for industrial equipment, ensuring smooth operation and reducing wear and tear.
2. **Plastic and Rubber Industry**: It can be used as a release agent in the plastic and rubber processing. When manufacturing plastic products, adding lithium stearate can prevent the plastic from sticking to the mold, improving the quality and surface finish of the final products. In the rubber industry, it helps in the extrusion and molding processes of rubber products.
3. **Cosmetics**: Lithium stearate is used in the formulation of some cosmetics. It can act as an emulsifier, helping to mix oil and water - based ingredients evenly in products like creams and lotions. This leads to a more stable and homogeneous cosmetic product.
1. **As a lubricant**: When using lithium stearate as a lubricant in greases, it should be properly dispersed in a base oil. First, heat the base oil to a suitable temperature (usually around 60 - 80 °C) to improve its fluidity. Then, slowly add lithium stearate powder while stirring continuously. The proportion of lithium stearate in the grease formulation depends on the specific application requirements, typically ranging from 5% to 20%. After adding, continue to stir for a sufficient time to ensure uniform dispersion.
2. **In plastic and rubber processing**: For plastic processing, lithium stearate can be added during the compounding stage. It can be mixed with other plastic additives and resins using a mixer. The amount added is usually 0.5% - 2% of the total plastic mass. In rubber processing, it can be added during the mixing process of rubber compounds on a two - roll mill or an internal mixer.
3. **In cosmetics**: In cosmetic formulations, it should be added during the emulsification process. First, heat the oil - phase and water - phase ingredients separately. Then, add lithium stearate to the oil - phase. After that, slowly add the oil - phase containing lithium stearate to the water - phase while stirring vigorously to form a stable emulsion.
1. **Automotive Grease**: A major automotive manufacturing company was facing issues with the high - temperature performance of their automotive greases. The bearings in their engines were experiencing excessive wear and tear due to the breakdown of the existing grease at high temperatures. They decided to switch to a lithium stearate - based grease. After using the new grease, the wear and tear of the bearings were significantly reduced. The temperature rise in the bearings during operation also decreased, resulting in improved engine efficiency and a longer service life for the bearings. The company reported a 30% reduction in maintenance costs related to bearing replacement.
2. **Plastic Injection Molding**: A plastic injection molding company was struggling with the sticking of plastic parts to the molds, which led to surface defects and production delays. They added lithium stearate as a release agent to their plastic resin. After the addition, the plastic parts could be easily ejected from the molds, and the surface finish of the parts was greatly improved. The production efficiency increased by 20% as the time spent on mold cleaning and part recovery was reduced.
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