Products
Calcium Hypochlorite Granular
Product name: Calcium Hypochlorite granular
Grade: 65%, 70%
Appearance: White or grey-white granular
M.F.: Ca(ClO)2
CAS No: 7778-54-3
EINECS NO.: 231-908-7
UN No.: UN2880
Package: drum of 5kg, 10kg, 15kg, 25kg,40kg, 45kg and 50 kg, customized package
Hazardous: Class 5.1, oxidizer
calcium hypochlorite granular
What Is Calcium Hypochlorite Granular?
Calcium hypochlorite granular is an inorganic compound with the chemical formula Ca(ClO)₂. It is one of the most widely used chlorine-based disinfectants in water treatment, recognized for its high available chlorine content (65%-70%), stability in storage, and ease of handling compared to liquid chlorine or sodium hypochlorite. Commonly known as bleaching powder or HTH (high-test hypochlorite), it appears as white or grey-white granules with a characteristic chlorine odor.
Everglory Industrial OS Limited manufactures calcium hypochlorite granular in two grades — 65% and 70% available chlorine — complying with UN 2880 hazardous material shipping standards. Our production facility operates under strict quality control, with each batch tested for available chlorine content, moisture level, and particle size before packaging.
Technical Specifications
| Parameter | Grade 65% | Grade 70% |
|---|---|---|
| Available Chlorine | ≥ 65% | ≥ 70% |
| Moisture | 5.5% - 10% | 5.5% - 10% |
| Chlorine Loss (per month) | ≤ 8% | ≤ 8% |
| Particle Size | 8-30 mesh (≥ 90%) | 8-30 mesh (≥ 90%) |
| Appearance | White or grey-white granular | White or grey-white granular |
| Molecular Formula | Ca(ClO)₂ | |
| CAS Number | 7778-54-3 | |
| EINECS Number | 231-908-7 | |
| UN Number | 2880 (Class 5.1 Oxidizer) | |
Applications & Uses
Calcium hypochlorite granular serves as a primary disinfectant and oxidizing agent across multiple industries:
- Drinking Water Treatment: Municipal water supplies use calcium hypochlorite for primary disinfection. Typical dosage ranges from 1-3 mg/L depending on water quality and organic load. It effectively eliminates bacteria, viruses, and protozoan cysts including Giardia and Cryptosporidium.
- Swimming Pool Disinfection: As a fast-dissolving chlorine source, it rapidly raises free chlorine levels in pools. The granular form allows for direct application or pre-dissolution in water before adding to pool circulation systems. See our pool chlorine granules →
- Industrial Water Treatment: Cooling tower water, process water, and wastewater effluent disinfection. The compound's oxidative properties also help control biofilm and algae in industrial cooling systems.
- Aquaculture & Agriculture: Fish and shrimp farming operations use calcium hypochlorite for pond disinfection and disease prevention. In livestock facilities, it serves as a broad-spectrum surface disinfectant.
- Pulp & Textile Bleaching: The paper industry uses calcium hypochlorite as a bleaching agent for mechanical and chemical pulp. Textile manufacturers apply it for cotton and hemp fiber bleaching.
- Mining Industry: Used in gold cyanidation processes as an oxidizing agent for elution circuits.
Packaging Options
We offer multiple packaging configurations to meet different shipping and handling requirements. All packages comply with UN 2880 specifications for hazardous materials transport:
- Round plastic drum: 40kg or 45kg net weight
- Octagonal drum: 45kg or 50kg net weight
- Square drum (white/blue): 25kg, 45kg or 50kg net weight
- US-style drum: 5kg, 10kg, 15kg, 25kg, or 45kg net weight
- Custom packaging: Available upon request with minimum order quantities
Storage & Safety Guidelines
Calcium hypochlorite is a Class 5.1 oxidizer and requires careful handling:
- Store in a cool, dry, well-ventilated area away from direct sunlight and heat sources
- Keep containers tightly sealed — exposure to moisture accelerates decomposition
- Never mix with acids, ammonia, or organic materials — this can cause violent reactions or fire
- Maintain storage temperature below 30°C (86°F) to minimize chlorine loss
- Use appropriate PPE: chemical-resistant gloves, safety goggles, and respiratory protection when handling large quantities
- Shelf life: approximately 12 months under proper storage conditions, with monthly chlorine loss not exceeding 8%
Quality Assurance & Certification
Every production batch of calcium hypochlorite granular undergoes laboratory testing for available chlorine content, moisture, particle size distribution, and thermal stability. SGS test reports are available upon request for the 70% grade. We provide a 100% quality guarantee — if any batch fails to meet specifications, we offer replacement or refund.
Our manufacturing facility maintains ISO-compliant quality management systems, and all products are packaged and labeled according to international hazardous material transport regulations (IMDG).
Delivery and shipping:
As the professional manufaturer and exporter of calcium hypochlorite which focus on international market, Everglory Industrial OS Limited always supplys cargo with quality guarantee, delivery on time and best service!
