Calcium chloride
CaCl2
Product information
Calcium chloride
Calcium chloride is an inorganic salt composed of calcium and chlorine that occurs in various hydration forms. The pure substance is a white crystalline solid that is strongly hygroscopic in its anhydrous form, eagerly attracting moisture from the environment. The anhydrous salt dissolves in water exothermically, resulting in a strong release of heat. It is very highly soluble in water and has a characteristic salty taste. Due to its property of significantly lowering the freezing point of water, it is frequently used in freezing mixtures and as a de-icing agent.
Calcium chloride is widely used in industry and everyday life due to its hygroscopic nature and its low freezing point. It is extensively employed as a de-icing agent and road salt in winter maintenance, as it is effective even at very low temperatures. In construction, it serves as a setting accelerator for cement and concrete. Due to its strong water-binding property, it is an important drying agent for gases and liquids and is used in dehumidifiers. In the food industry, it is approved as an additive and serves as a firming agent in the production of cheese and tofu. Additionally, it is used for dust control on unpaved roads.
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Molecular Formula : CaCl2 ; CaCl2·2H2O
Molecular Weight: Anhydrous:110.98 ; Dihydrates:147.02
CAS: Anhydrous:10043-52-4 ; Dihydrates:10035-04-8
| Specification | GB 1886.45-2016 | FCC VII | |
| Content，w/% | Anhydrous ≥ | 93.0 | 93.0-100.5 |
| Dihydrate ≥ | 99-107 | 99-107 | |
| Free Alkali(As Ca(OH)2) ,w/% ≤ | Anhydrous | 0.25 | ———— |
| Dihydrate | 0.15 | ||
| Acid Insoluble Matter, w/% ≤ | ———— | 0.02 | |
| Magnesium and Alkali Salts,w/% ≤ | Anhydrous | 5 | 5 |
| Dihydrate | 5 | 4 | |
| Heavy Metal (As Pb),mg/kg ≤ | 20 | ———— | |
| Lead (Pb),mg/kg ≤ | 5 | 5 | |
| Arsenic (As) ,mg/kg ≤ | 3 | 3 | |
| Flioride (F) ,w/% ≤ | 0.004 | 0.004 | |