Calcium Hypochlorite


Physical and Chemical Properties
Chemical Formula Ca(ClO)2
Molecular Mass 142.98 g/mol
Density 2.35 g/cm3 (20 °C)
Purity 70% chlorine
Appearance White granular solid, dissolves in water and Alcohol with high reactivity
Stability Unstable at high temperatures and reacts quickly with oils and organic materials, flammable
Handling and Storage Keep away from incompatible materials, reducing agents, organic matter, acids, fuels, in a cool and dry environment.
Odor Intense odor of Chlorine


Calcium Hypochlorite or perchlorine has strong oxidizing properties. It’s most important application is in disinfecting municipal water. Calcium Hypo acts as a strong disinfectant, and plays an important role in the municipal water disinfection and disinfection industry. This material is the cheapest water disinfectant, especially for emergencies. It is very useful for controlling water-borne epidemics.

Perchlorine is produced in two types of powder and granules. The solid powder of this chemical compound should usually form a solution of Calcium Hypochlorite when used. For this purpose, a certain amount of this solid powder is dissolved in a certain volume of water and used as a strong disinfectant.

Safety tips should be considered when working with Calcium Hypochlorite. Store in a cool, dry place away from direct sunlight, flame, spark, heat sources, incendiary materials, corrosive and fossil fuels.


Calcium Hypochlorite is used in water treatment to remove bacteria in drinking water supplies. It is widely used in the production of paper products, disinfectants, pigments, food, insecticides, petroleum products, plastics, solvents.

 Water Treatment

One of the most important applications of Calcium Hypochlorite is in water disinfection. For water treatment plants using Calcium Hypo is cost-effective and easy to use. Used water can cause illness if it is not disinfected with this or other disinfectants. Calcium Hypo releases chlorine when dissolved in water. Chlorine has antiseptic properties and removes fungi and germs. Excessive use of this substance can cause poisoning. Therefore, this chemical should be used with accurate evaluations.

Pool water disinfection

Calcium Hypochlorite is one of the most popular disinfectants in outdoor and indoor swimming pools. The amount of required Calcium Hypochlorite varies through factors such as the size of the pool, the duration of use, number of users, air temperature. Calcium Hypochlorite grains are available in two sizes, small and large. Small grains are suitable for personal uses, but large grains are recommended for water purification in large places. Calcium Hypochlorite decomposes under the sun light and some of it is lost. Therefore, in outdoor pools, either more of this substance should be used or decomposition of perchlorine must be added to the water.

Safety tips

Calcium Hypochlorite decomposes in the presence of heat. For this reason, these barrels should be stored in a cool, dry place. Therefore storage and keeping place should be well ventilated. The storage floor of this material should be made of moisture-resistant material. Calcium Hypo barrels should be placed on wooden plates at a distance from the floor of the warehouse. Perchlorine barrels should not be placed in the presence of odorous and flammable materials such as gasoline, oil, diesel or agricultural pesticides, especially phosphorus toxins, disinfectants. Because chlorine emitted from barrels of Calcium Hypochlorite due to sunlight and heat can cause an explosion. Calcium Hypochlorite has a pungent odor and the chlorine gas emitted from it is toxic and corrosive. If this gas enters the human lungs, it may lead to lung cancer. Therefore, when using this substance, safety points should be observed and the amount of gas entering the lungs should be minimized by using approved masks. In case of contact with the vapors of this substance with the eyes or entering the nose or entering the solution in the mouth, rinse with plenty of water. Calcium Hypochlorite should not be mixed with other chemicals in contact with acid releases toxic gases.