1)White flakes,not impurity 2)Industrial Grade Calcium chloride dihydrateMolecular formula : CaCl2CAS:10035-04-8Melting Point : 176Boiling Point : ... as a dryer to dry nitrogen, oxygen, hydrogen, hydrogen chloride and sulfur dioxide etc.2. Act as dehydration agent when ... producing alcohol, ester, ether and acrylic acid.3. Calcium chloride is a kind of important cryogen used by freezing machine ...