What is calcium stearate?

Calcium stearate is an organic compound with the molecular formula C36H70CaO4. It is a white powder, insoluble in water, and can be used as a waterproofing agent, lubricant and plastic additive.

Calcium stearate is a calcium salt derived from calcium oxide and stearic acid, commonly found in cosmetics, plastics and food. There are advantages and disadvantages to using calcium stearate.

Synthesis of calcium stearate

1. Synthesis of calcium stearate. A calcium chloride solution with a content of 1074kg/m3 (10°Bé) was added to the sodium stearate solution prepared above, and the metathesis reaction was carried out at about 65°C. The product calcium stearate precipitates out. Then it is filtered, washed with water, and dried at about 90°C to obtain the finished product.

2. Suspend 5.60g (0.1mol) calcium oxide in 300mL, 55℃ hot water. Then dissolve 51.3 g of chemically pure stearic acid in 350 mL of 70°C hot water, add 0.75 g of diethanolamine, and stir to emulsify. The prepared stearic acid emulsion is gradually added to the calcium oxide suspension within 2 hours, fully stirred, and the white insoluble matter that is generated is filtered out, namely calcium stearate, and dried to obtain the product.

3. Direct method Add a certain amount of stearic acid and CaO to a reaction pot equipped with a stirrer and a thermometer, heat it to melt, slowly add the catalyst H2O2 under constant stirring, and apply a vacuum to control the reaction temperature at 140-150°C. The reaction time is 1.5～2.0h. After the reaction is completed, the material is discharged, cooled, and pulverized to obtain the product.

4. Metathesis method: Dissolve stearic acid in 20 times hot water, add saturated caustic soda solution, and carry out saponification reaction at about 75°C to generate dilute sodium stearate solution. Then the calcium chloride solution with a content of 1074 kg/m3 is added to the sodium stearate solution, and the metathesis reaction is carried out at about 65° C., and the product calcium stearate is precipitated. Then it is filtered, washed with water, and dried at about 90°C to obtain the finished product.

Overview of calcium stearate emulsion

Calcium stearate is an organic compound with the molecular formula C36H70CAO4. The white powder is insoluble in water and can be used as waterproof, lubricant and plastic auxiliary tools. Calcium stearate is a type of calcium carboxylate, classified as calcium soap. It is a component of some lubricants, surfactants and many foods. This is a white waxy power. Calcium stearate emulsion is a stabilizer and lubricant of polychloroacetic acid, but it has poor stabilizing effect and good long-term thermal stability. It is a soft film container for non-toxic food packaging and medical equipment. When polyethylene and polypropylene are used as halogen absorbents, the catalyst in the resin can eliminate the adverse effects of resin color and stability. It can also be widely used as a lubricant for polyolefin fibers and mold plastics, or as a moisturizing and releasing agent for phenolic, amino, such as phenolic, amino, and polyester reinforced plastics, a water repetitive agent for grease, and a water repetitive agent for textiles.

Application of calcium stearate emulsion

Calcium stearate is mainly used as an acid scavenger, mold release agent and lubricant in the plastic industry, used in building waterproofing, and used as an anti-caking additive in medicine and cosmetics.

1. Calcium stearate emulsion is a stabilizer and lubricant of polychloroacetic acid, but the stabilizing effect is poor, and the long-term thermal stabilization effect is acceptable. It can be used as non-toxic food packaging, medical equipment and other soft film appliances.

2. Calcium stearate emulsion is used as a halogen absorbent in polyethylene and polypropylene, which can eliminate the adverse effect of residual catalyst in the resin on the color and stability of the resin.

3. Calcium stearate emulsion can also be widely used as a lubricant for polyolefin fibers and molded products.

4. Calcium stearate emulsion can be used as lubricant and release agent for phenolic, amino and other thermosetting plastics, polyester reinforced plastics, and thickener for grease.

5. Calcium stearate emulsion is used as a waterproofing agent for textiles and a smoothing agent for paints.

Calcium stearate emulsion price

The price of calcium stearate emulsion products will vary randomly with the production cost, transportation cost, international situation, exchange rate and market demand for calcium stearate emulsion products. Tanki New Materials Co.,Ltd. aims to help various industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full set of customized services. If you are looking for calcium stearate emulsion products, please feel free to send an inquiry to get the latest prices of calcium stearate emulsion products.

Suppliers of calcium stearate emulsion

As a global supplier of water-based calcium stearate emulsions,Tanki New Materials Co.,Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced engineering materials. The company has successfully developed a series of powder materials (including oxides, carbides, nitrides, single metals, etc.), high-purity targets, functional ceramics and structural devices, and provides OEM services.