Anhydrous Calcium Chloride CAS#10043-52-4
High Solubility: Anhydrous calcium chloride exhibits extremely high solubility in water, and it is also soluble in multiple organic solvents including ethanol and acetic acid, which enables its wide application in industrial dehumidification, solution preparation and chemical synthesis fields. The substance releases a large amount of heat during dissolution, showing obvious exothermic dissolution characteristics, and its solubility increases significantly with the rise of ambient temperature, meeting the preparation requirements of high-concentration aqueous solutions under different temperature conditions.
Stable pH & Thermal Stability: The aqueous solution of anhydrous calcium chloride presents a neutral to slightly alkaline pH state with stable properties. Its dilute aqueous solution can maintain stable pH value and chemical state after long-term heating and high-temperature treatment, without obvious decomposition, hydrolysis or deterioration. The compound possesses excellent thermal stability at conventional industrial temperatures, and it will not decompose or produce harmful substances when stored and used under normal high-temperature working conditions.
Versatile Uses: Anhydrous calcium chloride is a highly versatile inorganic chemical raw material. It is widely used as a desiccant and dehumidifier for gas and liquid drying in chemical and laboratory industries, capable of removing moisture from air, industrial gases and organic solvents efficiently. In the field of road and environmental engineering, it serves as an antifreeze, dust suppressant and snow melting agent, which can effectively lower the freezing point of water and prevent road icing and dust flying. It also acts as a coagulant and auxiliary agent in oilfield exploitation, wastewater treatment and rubber industry, and is commonly applied as a food additive, preservative and curing agent in food processing industry. In addition, it can be used as a raw material for the synthesis of various calcium salts and a humidity regulator for industrial production environments.
Anhydrous calcium chloride, with the molecular formula CaCl₂, is a typical inorganic calcium salt compound. It shows excellent water solubility with a solubility of 745 g/L at 20°C, freely soluble in ethanol and slightly soluble in acetone, insoluble in ether and benzene. Its aqueous solution is colorless and transparent with stable properties, and does not undergo hydrolysis reaction under normal temperature and pressure conditions. The substance is non-volatile and has no peculiar smell, with mild irritancy to human skin, eyes and respiratory mucosa. It is widely used in chemical synthesis, environmental protection engineering, food industry, petroleum exploitation, construction and many other fields due to its excellent hygroscopicity, low-temperature resistance and chemical stability.
Anhydrous Calcium Chloride Chemical Properties
Item | Specification |
|---|---|
Melting point | 772 °C (lit.) |
Boiling point | 1935 °C |
Density | 2.15 g/cm³ (20 °C) |
Refractive index | 1.356 |
Storage temp | Store at room temperature, sealed and dry (2-8°C for long-term storage) |
Solubility | 745 g/L (20 °C) in water; soluble in ethanol, slightly soluble in acetone, insoluble in ether |
Form | Crystalline powder / granular solid |
Color | White |
Odor | Odorless |
PH Range | 5.0-9.0 (100g/L, H₂O, 20℃) |
Water Solubility | 745 g/L (20 º C) |
Sensitive | Hygroscopic, deliquescent |
Stability | Stable. Incompatible with strong oxidizing agents, strong acids, silver salts |
CAS Number | 10043-52-4 |
Safety Information
Item | Specification |
|---|---|
Hazard Codes | Xi |
Risk Statements | 36/37/38 |
Safety Statements | 22-24/25-26-36 |
WGK Germany | 1 |
RTECS | EV9800000 |
TSCA | Yes |
HS Code | 28272000 |
Anhydrous calcium chloride is a multifunctional inorganic chemical additive with extensive industrial application value. In organic chemical industry and laboratory research, it is commonly used as a high-efficiency drying agent and water remover to purify organic solvents and reaction systems. In the field of environmental protection and municipal engineering, it is prepared into solution for road snow melting, anti-icing and dust control, which is efficient and low-cost. It also serves as a water treatment agent, oilfield auxiliary agent and concrete antifreeze agent in industrial production. Moreover, it can be used as a moisture-proof agent for storage and transportation, a food curing agent and a raw material for preparing calcium-based chemical products, showing outstanding application adaptability in multiple industrial fields.
