Calcium chloride, a salt composed of chlorine and calcium, has a chemical formula of CaCl2. Colorless cubic crystal, white or grayish white, granular, honeycomb block, spherical, irregular granular, powdery. It is slightly toxic, odorless and slightly bitter. It is a typical ionic halide and is a white solid at room temperature. It is extremely hygroscopic and is easily deliquescent when exposed to air. Soluble in water, while releasing a lot of heat, its aqueous solution is slightly alkaline. Soluble in alcohol acetone acetic acid. It reacts with ammonia or ethanol to form CaCl28NH3 and CaCl24C2H5OH complexes respectively. 
    Calcium chloride is classified into industrial grade and food grade according to Uses. According to the content, it is divided into anhydrous calcium chloride (94%), liquid calcium (27%-40%) and calcium chloride dihydrate (with two crystal waters, the content is 74%). 
Industrial grade calcium chloride Uses: 
1, oil drilling, drilling working fluid, completion fluid, petrochemical dehydration liquid. 
2. Drying agent, such as drying for nitrogen, oxygen, hydrogen, hydrogen chloride, sulfur dioxide and the like. 
3. Snow melting agent, using calcium chloride to melt heat and low freezing point to make road deicer and snow melting 
agent 4. Dehydrating agent, used as dehydrating agent in the production of alcohol, ester, ether and acrylic resin. 
5. Refrigerant, calcium chloride aqueous solution is an important refrigerant for refrigerators and ice making. 
6. Antifreeze agent can accelerate the hardening of concrete and increase the cold resistance of building mortar. It is an excellent building antifreeze. 
7. Early strength agent: early strength agent for construction industry, improve concrete strength, coagulant for living paint 
8. Dust collector, used as antifogging agent for pavement and pavement dust collector and fabric fireproofing agent. 
9. Refining agent, used as a protective agent and refining agent for aluminum-magnesium metallurgy. 
10. Precipitant, a precipitant for the production of lake pigments. 
11, coagulant: chemical industry inorganic chemical raw materials and sulfate removal agent, sodium alginate 
12. Coagulant: rubber industry latex coagulant. 
13. Used in the production of pigments and printing and dyeing industry.
14. Used for waste paper processing and deinking. 
15. Raw materials for the production of calcium salt 
Uses of food grade calcium chloride 
Food calcium chloride as a widely used food additive, general food calcium chloride used in the food industry has the following conditions: 
1 beverage, as an electrolyte, enhance Appropriate 
2 pickles, calcium chloride itself has a salty taste, can reduce the amount of salt 
canned 3 can, can occur gelatinization, enhance the consistency of soup porridge 
4 tofu, so that soybeans emulsified and solidified. 
     Adding provisions for improving the calcium content of tofu and smooth foods 
     According to the Food Sanitation Law of the People's Republic of China and the Measures for the Administration of Food Additives, calcium chloride can be used as a stabilizer and coagulant, nutrient enhancer and others. The scope of use includes soy products, creams, soft drinks, sweet sauce, jam, prepared water and processing aids for the food industry. 
     Anhydrous calcium chloride as a food additive can improve the taste of food and is widely used in the food industry. According to the "Food Sanitation Law of the People's Republic of China" and the "Administrative Measures for Food Additives Health", the use of calcium chloride in food additives is as follows: 
1. Bean products, cream: the maximum use of soy products and cream can be Production needs to be used in moderation. 
2, soft drinks: the maximum use of soft drinks 0.44-3.7g / kg. 
3. Modulating water: The maximum amount of water used in the preparation is 100 mg/kg or 100 mg/1 (36 mg/1 in terms of calcium). 
4, sweet sauce sweet sauce: the maximum use of sweet juice sweet sauce 0.4g / kg. 
5. Jam: The maximum use amount of jam is 1.0g/kg.
     In particular, it is proposed to use the second-water powder for compound fertilizer, without the high content of calcium chloride, the high content of heat is not complete, and the next day will form a large block. The role of calcium chloride in the production process of compound fertilizer is granulation. Molding effect, using the viscosity of calcium chloride to achieve granulation, before the use of clay, clay is expensive, and the compound fertilizer is black, so replace it with calcium chloride. The dosage is determined according to the land situation, and some places are added. 20 kg / ton, some places plus 30, some places plus 50, less used in winter, more used in spring and summer.