Key Features

Stable calcium hypochlorite powder is a high‑strength chlorine‑based disinfectant widely used for water treatment and sanitation. It is a dry, free‑flowing white powder that releases active chlorine when dissolved in water, providing powerful oxidizing action to eliminate bacteria, viruses, algae, and other microbes. Its stable powdered form allows easy storage and transport, and it retains its disinfecting potency longer under cool, dry conditions compared to liquid chlorine alternatives, making it ideal for pool sanitation, municipal water treatment, and emergency water purification.

Chemical Composition & Properties

Calcium hypochlorite powder primarily consists of calcium hypochlorite (Ca(ClO)₂), an inorganic compound with high available chlorine content. The dry powder is relatively stable when kept away from moisture and heat, dissolving readily to form hypochlorous acid—the active sanitizing agent—upon addition to water. Stable calcium hypochlorite powder maintains its effectiveness over extended storage periods in sealed containers, resisting rapid degradation that affects some liquid chlorine solutions.

Product Description

Stable calcium hypochlorite powder serves as an efficient and versatile disinfectant for water sanitation. When added to water, it releases chlorine species that penetrate microbial cell walls, oxidize organic contaminants, and inactivate pathogens. The active chlorine released helps maintain a residual disinfectant level in treated water, protecting against microbial regrowth and ensuring water remains safe and clear in both routine and heavy use scenarios.

Applications in Water Treatment

Stable calcium hypochlorite powder is widely applied in swimming pool sanitation to control bacteria and algae, in municipal and rural drinking water systems to ensure potable water safety, and in wastewater systems to disinfect effluent before discharge. It also sees use in industrial cooling systems, aquaculture water treatment, surface disinfection in food processing facilities, and emergency water purification efforts where reliable and portable disinfectants are required.

Mechanism of Action

The disinfecting action of stable calcium hypochlorite powder is based on the formation of hypochlorous acid (HOCl) when the powder dissolves in water. Hypochlorous acid is a potent oxidizing agent that destroys microorganisms by disrupting cell membranes, denaturing proteins, and interfering with metabolic functions. This oxidation process also breaks down organic impurities and contributes to clear, sanitized water with lingering disinfectant effects.

Usage & Dosing Guidelines

Proper dosing of stable calcium hypochlorite powder depends on water volume, contamination level, and treatment goals. For swimming pools, dosing is adjusted to maintain recommended free chlorine levels, typically monitored in parts per million (ppm). In drinking water treatment, specific chlorine residual targets ensure pathogen control. Pre‑dissolving the powder in a bucket of water before adding it to larger systems helps achieve uniform distribution and effective dissolution, and water quality testing before and after application ensures precise control.

Benefits

Stable calcium hypochlorite powder offers rapid and effective disinfection with strong oxidation capabilities and broad antimicrobial action. Its stable powdered form has a long shelf life when stored properly, reducing loss of available chlorine compared to liquid alternatives that degrade more quickly. The powder is easy to handle and transport, allowing flexible use across small and large water systems, and delivering cost‑effective sanitation.

Safety Considerations

Handling stable calcium hypochlorite powder requires appropriate personal protective equipment—such as gloves and eye protection—to prevent irritation or chemical burns. It should never be mixed with acids, ammonia, or incompatible chemicals, as dangerous reactions or release of chlorine gas can occur. Adequate ventilation and careful handling minimize exposure risks, and always follow product instructions and safety data sheets for safe application.

Storage Instructions

Store stable calcium hypochlorite powder in a cool, dry, and well‑ventilated area away from direct heat, sunlight, and moisture. Keeping the powder in tightly sealed containers prevents premature degradation and preserves available chlorine content. It should be stored separately from organic materials, acids, and reducing agents to avoid unsafe reactions. Regularly inspecting storage conditions and packaging integrity helps maintain long‑term effectiveness and safety until use.