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4Industry Information

Other applications of "calcium chloride" for calcium chloride desiccant


Calcium chloride is a colorless cubic crystal. The general products are white or white porous block or granular, honeycomb shape. Odorless, bitter taste. The relative density is 2.152, the melting point is 782°C, and the boiling point is above 1600°C. It is highly hygroscopic, easily deliquescent when exposed to the air, easily soluble in water, and emits a lot of heat at the same time, and its aqueous solution is alkaline. Soluble in alcohol, acetone and acetic acid. It reacts with ammonia or ethanol to generate CaCl2.8NH3 and CaCl2.4C2H5OH complexes respectively. The hexahydrate is usually crystallized from the aqueous solution at room temperature. When gradually heated to 30℃, it will dissolve in its own crystal water, continue to heat to gradually lose water, and become dihydrate at 200℃, and then become white porous anhydrous calcium chloride when heated to 260℃.

As an important chemical product, calcium chloride has been widely used in industry, food processing industry and medicine. According to the amount of crystal water contained in calcium chloride, it is divided into dihydrate calcium chloride and anhydrous calcium chloride. The main products are powder, flake and granular. According to the level, it is divided into industrial grade calcium chloride and food grade calcium chloride.

1. Application of industrial grade calcium chloride:

Industrial-grade calcium chloride has the characteristics of heat generation and low freezing point in contact with water. It is usually used for snow melting and deicing on roads, highways, parking lots, and docks. It also has the function of strong water absorption, and can also be used as a calcium chloride desiccant, such as for the drying of nitrogen, oxygen, hydrogen, hydrogen chloride, sulfur dioxide and other gases. It is the best material for port fog elimination, road dust collection and fabric fire protection. Calcium chloride aqueous solution is an important refrigeration medium for refrigerators and ice making. Dehydrating agent for producing alcohol, ester, ether and acrylic resin. It can also accelerate the hardening of concrete and increase the cold resistance of construction mortar. It is an excellent antifreeze for construction. Used as protective agent and refining agent for aluminum-magnesium metallurgy. Adding calcium chloride additives to the calcined cement can reduce the calcining temperature of the cement clinker by about 40°C and increase the productivity of the kiln. It is a precipitant for the production of lake pigments. Used for waste paper processing and deinking. It is the raw material for the production of calcium salt. Calcium chloride solution is used as a flocculant in the sodium alginate industry and the soy product industry.

2. Food grade calcium chloride application:

Food grade calcium chloride is mainly used in food processing stabilizers, thickeners, moisture absorbers, taste improvers, etc. For example, it is used in the manufacture of artificial shark fin, caramel, colorful ice cream and preserved fruit; rabbit meat, beef and other food tenderization treatment; mulberry, orange fruit beverage production, combined with sucrose esters, etc. for banana and other food preservation. In addition, it is also used for the improvement of wheat flour compound protein and the calcium fortifier in food. In medicine, calcium chloride is mainly used for drug synthesis. For example, the production of calcium L-aspartate requires calcium chloride as a raw material; it is used in combination with sodium bromide for the treatment of measles symptoms; injection treatment of internal hemorrhoids.

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