Calcium chloride is a chemical compound composed of chlorine and calcium elements (chemical formula CaCl2) with a slightly bitter taste. As a typical ionic halide, it appears as white, hard fragments or particles at room temperature. Key characteristics include:

• Colorless cubic crystals appearing white or grayish-white in granular, honeycomb block, spherical, or powder form
• Slightly toxic, odorless, with a slightly bitter taste
• Extremely hygroscopic and prone to deliquescence when exposed to air
• Highly soluble in water (74.5 g/100g at 20°C) with significant exothermic reaction
• Soluble in various polar and proton solvents including methanol, ethanol, and ethylene glycol
• Forms complexes with ammonia or alcohol and undergoes hydrolysis when heated

This versatile chemical has numerous industrial applications:

• Desiccant for drying gases (nitrogen, oxygen, hydrogen chloride, sulfur dioxide)
• Dehydrating agent in alcohol, ester, and acrylic resin production
• Refrigerant for cooling systems and ice making
• Concrete accelerator and building antifreeze
• Port mist suppressant, road dust collector, and fabric fire retardant
• Protective agent in aluminum magnesium metallurgy
• Raw material for calcium salt production
• Food industry applications including preservative and calcium fortifier

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