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Calcium Chloride CaCl2 is an inorganic salt, which exists in a solid form or as a liquid solution. Solid calcium chloride is a white, crystalline substance in the form of flake, granule or powder.Depending on the crystallized water contents, it can be dehydrate or anhydrous.Liquid calcium chloride is a colourless liquid.olid calcium chloride is a white, crystalline substance in the form of flake, granule or powder. Depending on the crystallized water contents, it can be dehydrate or anhydrous. Liquid calcium chloride is a colourless liquid.
Once settled, the top layer of the solution will be ferrous chloride and water (a transparent green color), whereas the bottom will be the remaining iron (the black). Ferric Chloride is FeCl3 and Ferrous Chloride is FeCl2. Ferric Chloride contains Iron+3 and Ferrous Chloride contains Iron+2. Ferric Chloride may react with pure Iron and create ferrous chloride. Commonly found in PCB etchant, Ferric Chloride solution will change from a dark brown when mixed with iron (steel wool) and distilled water and become black.