Chemical formula: CaCl₂2H₂O

Properties: colorless crystal. Industrial grade is white, off-white or slight yellow flaky or lumpy solid, bitter. Relative density 1.835g/cm3.

Uses: Used as refrigerant, antifreeze, fire extinguishing agent; used in the melting of ice and snow, or used to produce Calcium chloride anhydrous, flame retardant of cotton fabrics. can accelerate the hardening of concrete and increase the antifreeze capacity of building mortar .