Calcium Hypochlorite
Calcium Hypochlorite, commonly known as bleaching powder concentrate or HTH (High-Test Hypochlorite), is a powerful inorganic chlorinated disinfectant and bleaching agent. It appears as a white or light gray powder, granules, or tablets with a strong chlorine odor.
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Product Information

Calcium Hypochlorite, commonly known as bleaching powder concentrate or HTH (High-Test Hypochlorite), is a powerful inorganic chlorinated disinfectant and bleaching agent. It appears as a white or light gray powder, granules, or tablets with a strong chlorine odor. Its most notable characteristics are its high available chlorine content (typically above 65%) and better stability compared to ordinary bleaching powder, along with good water solubility. It rapidly releases hypochlorous acid (HOCI), providing strong bactericidal, bleaching, and oxidizing actions. Calcium Hypochlorite is one of the most widely used chemicals in swimming pool disinfection, drinking water treatment, sanitation, and industrial bleaching.

Calcium hypochlorite is a long-standing, effective, and economical disinfectant. Despite its limitations regarding stability and water quality, as well as stringent safety requirements, it remains a key player in large-scale applications such as swimming pool disinfection and environmental sterilization due to its excellent cost-effectiveness. When using it, safety risks must be prioritized.


Product Name (English)Calcium Hypochlorite
CAS No.7778-54-3
Physical Properties- White or light gray powder, granules, or tablets with a strong chlorine odor
- Soluble in water, releasing hypochlorous acid
- Strong oxidizing agent, unstable in air (moisture and CO₂ cause decomposition)
Applications- Primary disinfectant for swimming pools and drinking water treatment
- Bleaching agent for textiles and pulp
- Sanitizer and disinfectant in food processing, aquaculture, and public health
- Algicide and bactericide in multiple industries
SpecificationsAvailable Chlorine: 65% min (High-Test Grade, HTH)
Moisture: ≤6%
Water Insoluble Matter: ≤5%
pH (1% solution): 10-12 (alkaline)
Packaging25 KG/drum, 50 KG/drum (iron or plastic); 45 KG/drum (common)


Product Nature


  1. Physical Properties:
    · Appearance: White or light gray powder, granules, or tablets.
    · Odor: Strong, pungent chlorine odor.
    · Solubility: Soluble in water. The solution is alkaline.
    · Stability: Stable when dry, but unstable in moist air or upon contact with water, acids, or CO₂, slowly decomposing to release chlorine and oxygen.

  2. Chemical Properties:
    · Strong Oxidizing Agent: A powerful oxidizer that can react vigorously or explosively with many organic compounds.
    · Hydrolysis: Hydrolyzes in water to form hypochlorous acid (HOCI) and calcium hydroxide. Hypochlorous acid is the active component for disinfection and bleaching.
    · Decomposition: Decomposes rapidly in the presence of light, heat, acids, or certain metal ions (e.g., cobalt, nickel, copper), releasing chlorine and oxygen.
    · Incompatibility: Presents a fire or explosion hazard when mixed with organics, reducing agents, ammonium salts, acids, or combustibles (e.g., gasoline, lubricating oil).

Product Usage


  1. Water Disinfection (Primary Application):
    · Swimming Pool Sanitization: The most commonly used primary disinfectant for swimming pools and spas worldwide.
    · Drinking Water Treatment: For disinfecting municipal water supplies and emergency drinking water (e.g., post-disaster).
    · Wastewater Treatment: For disinfection of municipal and industrial wastewater.
    · Aquaculture: For disinfecting ponds and water bodies in aquaculture.

  2. Sanitation & Epidemic Prevention:
    · Used for disinfecting surfaces and environments in public areas, hospitals, kitchens, and toilets.
    · For rapid disinfection in outbreak areas.

  3. Industrial Bleaching:
    · Textile Industry: For bleaching cotton, linen, and synthetic fibers.
    · Paper Industry: For pulp bleaching.

  4. Other Applications:
    · Serves as an antidote in chemical warfare (neutralizing certain agents).
    · Acts as an oxidizing agent in organic synthesis.

Safety Matters


  1. Health Hazards:
    · Strong corrosive and oxidizing properties. Causes severe irritation and corrosion to eyes, skin, and respiratory tract, leading to serious chemical burns.
    · Inhalation of dust or decomposition products (chlorine gas) can cause respiratory tract damage, coughing, and breathing difficulties; severe cases may lead to chemical pneumonitis and pulmonary edema.
    · Ingestion causes severe corrosion of the digestive tract and can be life-threatening.

  2. Handling Protection:
    · Must be handled in a well-ventilated area or with local exhaust ventilation. Strictly prevent dust formation.
    · Imperative to wear a respirator (for chlorine gas and dust), chemical splash goggles, chemical-resistant gloves, and protective clothing.
    · Do not eat, drink, or smoke in the work area.
    · Wash thoroughly after handling.

  3. Storage & Transportation:
    · Store in a cool, dry, well-ventilated, dedicated warehouse away from heat and ignition sources. Strictly protect from moisture and isolate from the floor.
    · Keep containers tightly closed.
    · Must be stored and transported separately from combustibles, reducing agents, organic materials, acids, ammonium salts, ammonia, urea, etc. NEVER store or transport together.
    · Use spark-proof tools.

  4. Fire Fighting:
    · Non-combustible itself, but a strong oxidizer. Will intensely intensify the combustion of surrounding combustible materials and may cause an explosion.
    · Extinguish fire using large quantities of water, foam, or dry chemical. Avoid direct water jet on material to prevent splashing.
    · Decomposes violently in fire or upon heating, releasing highly toxic chlorine (Cl₂) and oxygen (O₂) (supports combustion), potentially causing an explosion.
    · Firefighters must wear self-contained breathing apparatus and full protective gear.

FAQ

Q:What are your main products?
A:We specialize in five core areas: general chemicals and food additives, water treatment and disinfection chemicals, oilfield drilling additives, fertilizers and soil conditioners, and solvents and specialty chemicals. We provide one-stop chemical procurement and solutions across multiple industries. 

Q:How do you ensure the consistent quality and reliability of your products?
A:Quality is our cornerstone. We are ISO 9001 certified for quality management, ISO 14001 for environmental management, and ISO 45001 for occupational health and safety. We implement strict quality control throughout the entire process, from raw material procurement to factory delivery, to ensure that every batch of products meets specifications.

Q:Can you provide customized products or solutions based on our specific needs?
A:Of course. We have a dedicated R&D and technical team dedicated to solving our customers' specific challenges. Whether it's adjusting product formulas, developing specific specifications, or customizing solutions for your processes, we are happy to provide customized services. Please provide your specific requirements and our engineers will work with you.

Q:What kind of technical support and after-sales service do you provide if problems arise?
A:We provide comprehensive technical support and after-sales service. We have a dedicated team to assist with everything from product selection guidance and application support to rapid response to after-sales issues. We promise to provide timely and professional feedback on your inquiries to ensure smooth operations.

Q:What is the minimum order quantity (MOQ) and delivery time?
A:To meet the needs of diverse customers, we offer flexible MOQs. The specific MOQ and delivery time depend on the product type and order size. We will provide you with a detailed quote, MOQ, and estimated delivery time within 24 hours of receiving your detailed inquiry.

Q:Do your products comply with international environmental and safety standards?
A:Yes, compliance is a key aspect of our product design. Our product development and production processes strictly adhere to relevant international and regional regulations. We also actively offer product options that comply with standards such as REACH and RoHS, and provide you with detailed Safety Data Sheets (SDS) to ensure safe and compliant use.

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