... typical ionic halide, and is solid at room temperature. Calcium chloride, CaCl2, is a common salt. It behaves as a typical ... used to turn kelp into a solid. 95% Anhydrate Calcium Chloride Power. Certificate of Analysis,ItemStandard (Technical Grade)Test ResultCalcium ... ≥95.0%95.50%Magnesium and Alkali Metals Chloride≤5.5%5.5%Infusibility In Acid≤0.04%0. ...