Today, the editor will take you to understand the characteristics of white carbon black anti caking agent, also known as hydrated silicic acid and light silica. The chemical expression is generally written as msio2 · nH2O. The appearance is white highly dispersed amorphous powder, and some are processed into granules as commodities. The specific gravity is 2.319 ～ 2.653, and the melting point is 1750 ℃. Insoluble in water and most acids, it will become aggregated fine particles after absorbing water in the air. Soluble in caustic soda and hydrofluoric acid. It is stable to other chemicals, resistant to high temperature, does not decompose and does not burn. It has high electrical insulation, porosity, large internal surface area, water absorption and non-toxic.


Anti caking agent this product is a kind of highly active amorphous white powder with an average fineness of 325-800 mesh, a specific surface area of 24000 square meters / kg, a smooth surface, a lubricating effect, and can reduce the friction between particles. Good anti caking effect. The powdered anti caking agent is directly coated on the surface of the particles, which plays a role of isolation between the particles, so that the anti caking effect of the surfactant is fully reflected, thereby increasing the anti caking effect. The dry strength of the product can be improved. It can prolong the storage time in the warehouse, greatly improve the dispersion, have obvious particle strengthening effect, and also solve the problems of "long hair" and "pulverization" of products.


White carbon black and white monoclinic crystal or amorphous powder. It is stable in non-toxic and odorless gas. The relative density is 2.16. Slightly soluble in water, the aqueous solution is weakly alkaline, and the solubility in water is 0.02% (15 ℃). It is easily soluble in acid and ammonium salt solutions. It is easy to decompose into magnesium oxide and carbon dioxide when calcined. It decomposes into carbon dioxide when it meets dilute acid. Generally, it is slightly soluble in water. When heated, it is easy to react with water (when hard water is softened) to form magnesium hydroxide (because magnesium hydroxide is more insoluble than magnesium carbonate). Equation: MgCO3 + H2O = Mg (OH) 2 + CO2