Classification and application of calcium chloride
Calcium chloride according to the content classification can be divided into anhydrous calcium chloride, liquid calcium chloride and calcium chloride dihydrate, according to the purpose classification can be divided into industrial grade calcium chloride and food grade calcium chloride. The details are as follows:
1. Classification according to content
According to the content classification can be divided into anhydrous calcium chloride, liquid calcium and calcium chloride dihydrate; The content of anhydrous calcium chloride is 94% and above, the content of liquid calcium is 27%-40%, and the content of calcium chloride dihydrate is 74% and above.
2, according to the use of classification
According to the classification of use can be divided into industrial grade calcium chloride and food grade calcium chloride. In industry, calcium chloride can be used as snow melting agent, desiccant, dehydrating agent, refrigerant, antifreeze, etc. It can also be used for oil drilling, and is also the raw material for the production of calcium salt. In the food industry can be used as food additives.
Snow melt agent: calcium chloride can be used as roads, highways, parking lots, airports and other places of de-icing snow;
Desiccant: calcium chloride can be used for nitrogen, oxygen and other gas drying;
Dehydrating agent: production of alcohol, ester, ether and acrylic resin used as dehydrating agent;
Refrigerant: the freezing point of calcium chloride solution is -20-30℃, which can reduce the freezing point of the solution, so that the freezing point of water is below zero, so calcium chloride aqueous solution is an important refrigerant for refrigeration and ice making;
Antifreeze: can accelerate the hardening of concrete and increase the cold resistance of building mortar, is an excellent building antifreeze;
Food additive: calcium chloride is often used as a curing agent for canned vegetables; It also solidifies the soy curd to form tofu. Added as an electrolyte to sports drinks or some soft drinks. Calcium chloride itself is very salty so it can be used instead of salt in pickles without increasing the sodium content of the food. Calcium chloride is used to delay the freezing of caramel in chocolate bars filled with caramel by lowering the freezing point.
In addition, calcium chloride in the industry there are a variety of uses, such as can also do mist and road dust collection agent, cotton fabric fire agent; Can also be used for aluminum magnesium metallurgy protective agent, refining agent; It is also used to produce calcium salts.