Calcium hypochlorite — also known as bleaching powder, chlorine powder, or hypochlorite de calcium — is a high-efficiency inorganic oxidizing agent and disinfectant with molecular formula Ca(ClO)₂ and molecular weight of 142.98 g/mol. It is one of the most widely used chlorine-based disinfection and bleaching chemicals in global trade, valued for its high available chlorine content, stability in solid form, and cost-effectiveness compared to liquid chlorine alternatives.
As a calcium hypochlorite supplier based in China, Shenyang Yftdss Trading Co., Ltd. exports Ca(ClO)₂ granule to buyers in water treatment, swimming pool chemicals, textile processing, food sanitation, and industrial cleaning industries worldwide.
| Product Name | Calcium Hypochlorite, Bleaching Powder, Chlorine Powder, Hypochlorous Acid, Hypochlorite de Calcium |
| Molecular Formula | Ca(ClO)₂ |
| Molecular Weight | 142.98 g/mol |
| Color | White or off-white |
| Appearance | Granule |
| Melting Point | 100 °C |
| CAS No. | 7778-54-3 |
| EINECS No. | 231-908-7 |
| Density | 2.35 g/cm³ |
| United Nations Code | 2880 |
| Hazardous Product Grade | 5.1 |
| Package | 10kg, 25kg, 40kg and 50kg Class II barrels, with PVC plastic bags or 50kg round iron drums marked with 5.1 oxidant inside |
Application
Water Treatment & Drinking Water Disinfection
Calcium hypochlorite is one of the most widely used chemicals for municipal drinking water disinfection. When dissolved in water it releases hypochlorous acid (HOCl), a powerful biocide that eliminates bacteria, viruses, algae, and other pathogens at low dosage levels. Its solid granule form offers significant handling, storage, and freight advantages over liquid sodium hypochlorite — it is more stable, more concentrated, and easier to transport to remote treatment facilities.
Swimming Pool Water Treatment
Calcium hypochlorite is the standard chlorine source for swimming pool sanitation worldwide. It maintains free available chlorine (FAC) levels within the safe and effective range, controls algae growth, and eliminates waterborne pathogens. Its granule form dissolves rapidly and evenly, minimizing dosing equipment requirements. It is used in both continuous dosing and shock treatment (superchlorination) applications.
Textile Bleaching — Cotton, Hemp, Fiber & Starch
In textile processing, calcium hypochlorite is used as a bleaching agent for cotton, hemp, natural fibers, and starch-based materials. It oxidizes and removes color-causing compounds from raw fiber, producing the white base required for dyeing and finishing. It is valued for its high bleaching efficiency and low cost per unit of available chlorine relative to alternative bleaching agents.
Industrial Sanitation & Food Processing
Calcium hypochlorite is used as a surface disinfectant and equipment sanitizer in food processing facilities, slaughterhouses, breweries, and dairy operations where regulatory hygiene standards require effective pathogen control. It is also applied in hospital and institutional cleaning, aquaculture pond disinfection, and wastewater treatment.
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No.1-26-7, No.73, Xinggong North Street, Tiexi District, Shenyang City, Liaoning Province, China
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