Calcium hypochlorite (Perchlorine)

Calcium hypochlorite (Perchlorine)

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Chlorine (Ca(ClO)2) or calcium hypochlorite or Perchlorine is a white disinfectant. This substance has a strong chlorine odor which is highly soluble in water and alcohol and is highly reactive. This material is unstable at high temperatures and reacts rapidly with oils and organic matter and is flammable. It is usually sold in the market with a 60 – 70 percent purity percentage.

Preventing a disease is much easier and cheaper than treatment. Many intestinal diseases such as cholera, etc. are because of some very small, non-visible organisms. These creatures enter the human body by eating contaminated vegetable water and fruit, or by transmitting them by hand or insects to food and utensils and causing disease. One way to prevent intestinal diseases is to disinfect drinking and consuming water and fruits and vegetables with perchlorine solution.

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How to disinfect household water?

If your drinking water is not supplied through municipality water, it is best to disinfect your drinking water to ensure that it is completely safe. Note that any water, regardless of source, color, or odor and taste is considered unsanitary unless disinfected with chlorine.

Add three teaspoons (15 g) of Perchlorine round in one bottle (dark color bottle) to one liter of water (this is called the base solution) and stir. Then add seven drops of this solution (base solution) to one liter of water and stir. Use it safely after half an hour.


Perchlorine applications:

Antifungal, Antibacterial (anti odorant), Drinking Water Purification, Bleaching reagent (paper, textile), Disinfection and sterilization of swimming pools and production of Javel water……


Perchlorine preparation method:

Perchlorine slurry is produced through a multi-step process of synthesizing chlorine with limewater in the vicinity of sodium hydroxide. It is then gets filtered and dried and subsequently, perchlorine granules are obtained.

Storage conditions of perchlorine powder:

Due to the sensitivity to heat and humidity, perchlorine barrels should be kept cool and dry. Keeping them in the sun or in hot warehouses conduces the risk of explosion.

Perchlorine barrels should be stored away from odorant and flammable materials such as gasoline, petroleum, diesel or agricultural pesticides, especially phosphorus disinfectants such as Creolin, and should be strongly avoided. The perchlorin storage should be well ventilated. The storage floor should be made of moisture resistant material. Perchlorin barrels should be placed on wooden plates that are 10 cm above the warehouse floor.

Package Type: The final product is usually sold in  40-45kg barrels.

Comparison of sodium hypochlorite with Perchlorine in drinking water disinfection and their effect on solute content:

Chlorination is an essential method of controlling the quality of drinking water for public health purposes. Among the various chemicals for disinfecting water are chlorine, bromine, iodine, permanganate, ozone, and oxygenated water. Chlorination is the most convenient and inexpensive method used for chlorine gas, calcium hypochlorite and sodium hypochlorite (javel water). The disruptions of perchlorine use today, as well as the presence of calcium carbonate deposits, especially in areas with high solubility and soluble solids, have made use of javel water in many parts of the world. Chenaran city has been studied in Khorasan province. For this purpose, a research project on the use of javel water as a perchlorine substitute for disinfection of drinking water in Sorkheh city of Semnan province was investigated. Initially, several samples of water were purified by Javel, and the available chlorine was calculated using an Iodometric method in accordance with the latest water and wastewater testing guidelines. Physical and chemical experiments were carried out on raw water samples of Sorkheh city. Then 10 samples of crude water were prepared and the amount of chlorine required was determined through the clearance curve to the breakpoint during several tests. Also, due to the properties of the javel water in raising the pH, its changes were investigated and since these elements may be used in the production process of heavy metals such as mercury, these concentrations were determined. In the end, the cost of using javel water was calculated per cubic meter of drinking water compared to javel water. The degree of purity of javel water was between 15-12.5% to achieve the residual chlorine of 1.35 g / m3. None of the samples’ PH went over 8.3 after the injection of Javel water. Concentrations of heavy metals were determined in the range of 0.1 mg / Lt. The amount of soluble solids in aqueous solution is 1030 mg / Lt and its hardness is 687.2 mg / Lt The annual cost of use per cubic meter of drinking water for perchlorine is 26 Riyals and for javel water is 21 Riyals. The results obtained from this study showed that the pH of the water is at the standard level after adding some of the javel water to give the desired free residual chlorine. None of the heavy metals were excessive and some were not observed. The calculations also showed that the cost of using javel water was lower than that of perchlorine, and the amount of sediment remaining after injection of javel that water was related to the hardness and solubility of solids and high soluble solids, was much less compared to perchlorine. With this in mind, after learning about the Javel water disturbance process, it can be used as a viable alternative to perchlorine in the city of Sorkhe in the future.


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