Calcium chloride cas 10043-52-4

Calcium chloride is composed of chlorine and calcium and has the chemical formula CaCl2. It is a typical ionic halide, a white solid at room temperature, and its aqueous solution is neutral. Calcium chloride and its hydrates and solutions have important application values in food manufacturing, building materials, medicine and biology.

Description

  1. Physical and chemical properties:
    Colorless cubic crystal. The general merchandise is white or white porous or granular, honeycomb. Odorless, slightly bitter taste. The relative density is 2.15(25℃). Melting point 782℃. The boiling point is above 1600℃. Extremely hygroscopic and easily deliqued when exposed to air. Easily soluble in water, while releasing a lot of heat, its aqueous solution is slightly acidic. Soluble in alcohol, acetone, acetic acid. Reacting with ammonia or ethanol, CaCl28NH3 and CaCl2·4C2H5OH complexes were formed, respectively. At room temperature, the precipitation from aqueous solution crystallization is often hexahydrate, which is gradually dissolved in its own crystalline water when heated to 30 ° C, and gradually loses water when heated to 200 ° C, and then becomes a white porous anhydrous calcium chloride when heated to 260 ° C.
    II, product use:
    Used as snow and ice removal for roads, highways, parking lots, docks. Multi-purpose desiccant, such as nitrogen, oxygen, hydrogen, hydrogen chloride, sulfur dioxide and other gases drying. Used as dehydrating agent in the production of alcohols, esters, ethers and acrylic resins. Calcium chloride aqueous solution is an important refrigerant for chillers and ice making, which can accelerate the hardening of concrete and increase the cold resistance of building mortar, and is an excellent building antifreeze. Used as port fogging agent and road dust collector, fabric fire retardant. Used as a protective agent and refining agent for aluminum and magnesium metallurgy. It is a precipitating agent for the production of lake pigments. Used for deinking waste paper processing. It is a raw material for the production of calcium salts. Calcium chloride solution is used as flocculant in seaweed sodium industry and soybean products industry.

III. Technical indicators:

 

Index name Anhydrous calcium chloride Calcium chloride dihydrate
CaCl2 content %≥ 95%-98% 75%-80%
Magnesium and alkali metal chloride content %≤ 0.2 0.25
Water insoluble matter %≤ 0.1 0.2
Acidity (PH) 7.5-8.5 7.5-8.5
Alkalinity measured by [Ca(OH)2] ≤ 0.1 0.15

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