China Supplier Supply EINECS 207-439-9 Heavy/ Light Calcium Carbonate

Details:

PROPERTIES: White powder or colorless crystals. Odorless. Tasteless. There are two crystals, one is the orthorhombic crystals of aragonite, another is the hexagonal rhombohedral crystal calcite. At approximately 825 ° C is decomposed into calcium oxide and carbon dioxide. Soluble in dilute acid, almost insoluble in water. The aragonite: relative density is 2.83, melting point 825 ° C (decomp.). Calcite: Relative density (d25.2) 2.711, melting point 1339 ° C (10.39MPa). Irritant, can be devided into synthetic and natural calcium carbonate.

Application:

1.  In rubber manufacture: Calcium carbonate was the earliest filler used in the rubber industry. It can enlarge the capacity in the rubber products, forsaving the cost. It also enhances the tensile strength, abrasion and tearingstrength.

2.  Plastic manufacture: As the framework in plastic products, keeping stability of the products, strengthen the products, keening surface smoothly, since the calcium carbonate is high white, it can place the expensive the white polyethylene, for whitening the plastic products.

3. In the coating: calcium carbonate can be used as white pigment, up a frame function, calcium carbonate in the coating industry can be used as inert pigment. Due to the calcium carbonate color is white, in coating relative latex, solvent prices are cheap, and fine grain, can in coating evenly dispersed, so is a lot of use of inert pigment. Calcium carbonate filling can enhance primer to basic level surface sedimentary and permeability.

3.  Paper making: Whitening the paper, and as the filler, can reducing the pulp, for saving the cost.