2013年12月5日星期四

Calcium stearate uniform fine white powder

Calcium stearate uniform fine white powder. Melting point 145 ℃. Dissolved in toluene, ethanol, benzene and other organic solvents, insoluble in water. When heated to 400 ℃ slowly decomposed, flammable, met decomposition of stearic acid and corresponding calcium salt. There are absorbent, non-toxic.
Edit this paragraph purposes: heat stabilizers for PVC and other plastic processing lubricants, mold release agents and the like. In rigid products, and the base of lead salts, lead soap can increase the rate of gelation. Also used in food packaging, medical equipment and  Chrolinated polyethylene other requirements of non-toxic soft film and equipment. Can be made of polyethylene, polypropylene, halogen absorbers to eliminate the adverse effects of residual catalyst on the color and stability. As plasticizers in rubber processing, enabling natural rubber and synthetic rubber to soften the whole, and almost no effect on curing. Also used as polyolefin fibers and molded plastic lubricants, grease thickening agent, textile  aluminium stearate waterproofing agent, paint flatting agent, plasticizer manufacturing plastic labels and so on. Also used in pencil manufacturing and medicine, perfume industry. Calcium Stearate Formula: (C17H35COO) 2Ca Molecular Weight: 606 CAS NO.1592-23-0 gravity: 1.08 Technical Specifications: Index name Premium grade First grade Second grade calcium content% 6.5 ± 0.5 6.5 ± 0.6 6.5 ± 0.7 free acid (stearic acid)% ≤ 0.5 0.5 0.5 Heating loss% ≤ 2.0 3.0 3.0 Melting point ℃ 149-155 ≥ 140 ≥ 125 fineness (0.075mm sieve)% ≥ 99.5 99.0 99.0 impurities (grain) ≤ 6 12 - Micro residue (0.063mm sieve remaining)% ≤ 1.0 1.0 1.0 Whiteness% ≥ 95 90 -
Polyolefins, polyolefin acid neutralizer color stability and corrosion with direct contribution; lubricating / processing aluminium stearate  aids improve the polyolefins, polyamides, styrene-based rubber, and extrusion molding (film, fibers, copying, etc.), and press molding workability. For release of thermoplastics, thermoset rubber, and articles, such as polyurethane foam and an unsaturated polyester.

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