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General Chemistry
Calcium Hypochlorite
Formula:
Ca(ClO)₂
GOST/CAS:
CAS 7778-54-3 / ГОСТ 25263-82
Calcium Hypochlorite (the calcium salt of hypochlorous acid) is a highly efficient chemical compound acting as a powerful disinfecting, sterilizing, and bleaching agent. The product is a white or slightly colored powder or granular substance with a characteristic pungent odor of chlorine. Due to its high active chlorine content, it possesses strong antimicrobial action against most pathogens. Calcium hypochlorite is indispensable in industrial water treatment, sanitary disinfection, as well as in the textile and pulp and paper industries.
Applications
Water Treatment and Purification: Used as a base component for the disinfection of drinking water, treatment of wastewater, and sterilization of water supply networks. It effectively destroys bacteria, viruses, and algae, preventing biofouling in piping systems.
Swimming Pool Disinfection: Applied as an effective disinfectant for commercial, public, and medical swimming pools. It ensures rapid water sterilization and maintains water clarity during prolonged storage.
Sanitation and Disinfection: Integrated into disinfection protocols for livestock complexes, poultry farms, medical facilities, and food processing plants. It is used to treat surfaces, equipment, vehicles, and protective clothing.
Textile and Paper Industries: Used for bleaching cotton fabrics and linen, as well as in delignification and bleaching processes for cellulose pulp to achieve maximum brightness of the finished material.
Key Advantages
High Bactericidal Activity: Effectively eradicates a wide range of microorganisms, including vegetative and spore forms of bacteria, fungi, and viruses, even at low concentrations in water.
Storage Stability: Neutral calcium hypochlorite features enhanced resistance to decomposition compared to liquid sodium hypochlorite, retaining a high percentage of active chlorine over time when proper conditions are met.
Prolonged Sanitizing Effect: Provides a long-lasting sanitizing effect in treated systems, preventing the re-emergence of pathogenic microflora and bio-films on internal surfaces.
Cost-Efficiency: Due to the high concentration of the active substance, the product has a minimal specific consumption rate, which significantly reduces logistics, storage, and dosing costs.
Storage & Transportation
- Store in dry, cool, and well-ventilated warehouses in tightly closed original packaging, away from heat sources and open flames.
- Strictly avoid joint storage with combustible substances, organic materials, acids, and reducing agents to prevent violent chemical reactions and spontaneous combustion.
- Protect from direct sunlight and moisture exposure, as moisture accelerates the release of toxic gaseous chlorine and degrades product activity.
- Transportation is permitted by all modes of covered transport in compliance with dangerous goods regulations (Hazard Class 5.1 — oxidizing substance). The guaranteed shelf life is 1 year from the manufacturing date (up to 3 years for highly stable grades).
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Technical Specifications
Appearance
White or slightly colored powder or granules with a chlorine odor
Molecular Weight
142.98 g/mol
Mass Fraction of Active Chlorine
≥ 45.0%
Density (at 20°C)
~ 2.35 g/cm³
pH (1% aqueous solution)
11.0 – 12.0 (strongly alkaline reaction)
Solubility in Water (at 20°C)
~ 210 g/l (with minor sediment formation)
Supply info
- Polyethylene or plastic drums/bags of 25 kg, 40 kg, or 50 kg with a hermetic inner liner (for powder and granular forms).
- Flexible intermediate bulk containers (Big-bags) of 500–1000 kg for large industrial enterprises and wholesale batches.