Calcium Hypochlorite is well soluble in water. The color of its concentrated aqueous solutions is greenish-yellow.
Calcium hypochlorite has strong oxidizing properties and releases chlorine gas upon contact with acids. For example, when interacting with hydrochloric acid, chlorine gas is released and calcium chloride is formed according to the following chemical equation: Ca (ClO)2 + 4HCl → CaCl2 + 2H2O + 2Cl2. Chlorine gas is also released and calcium carbonate is formed, when interacting with carbon dioxide according to the following chemical equation: 2Ca (ClO)2 + 2CO2 → 2CaCO3 + 2Cl2 + O2.