Decolorant for cargo hold cleaning & Germicide and Disinfectant for ship sanitation system solution is widely used in water works for the chlorination of water. It is more commonly used for disinfection of waste water in treatment plants. High-test hypochlorite (HTH) is sold for chlorination of swimming pools and contains approximately 30% calcium hypochlorite. The crystalline salt is also sold for the same use; this salt usually contains less than 50% of calcium hypochlorite. However, the level of active chlorine may be much higher. Calcium Hypochlorite is a multi-purpose chemical of disinfectant, decolorant, germicide, antiseptic and bactericide.