Description
Calcium Hypochlorite 70% Granular
What Is Calcium Hypochlorite 70%?
Calcium hypochlorite 70% (Ca(ClO)2) is a solid chlorine disinfectant supplied as white granules with about 70% available chlorine. Unlike liquid sodium hypochlorite, it is a stable solid that stores well and is easy to transport and dose, which makes it a popular choice for swimming pools and remote water systems. It is a strong oxidiser and releases chlorine when dissolved in water.
Calcium Hypochlorite 70% Granular (CAS 7778-54-3, molecular formula Ca(ClO)2) is a treatment chemical specified by municipal and industrial plant operators where dose consistency and impurity control directly affect finished water quality. China Chemicals supplies it at 70% available chlorine in pack sizes from 1 kg through to 500 kg Pallet, so laboratory trial quantities and full production volumes can be sourced from the same specification.
It is also traded as Cal Hypo, HTH, Bleaching Powder. Every consignment ships with a batch-specific Certificate of Analysis and the current Safety Data Sheet, and material is stored and picked under stock rotation so you receive product well inside its shelf life.
Typical applications
- Swimming pool shock chlorination
- Emergency and remote potable water disinfection
- Sanitisation of food processing surfaces
- Algae control in cooling water systems
- Wastewater effluent disinfection
Technical specification
| Chemical name | Calcium Hypochlorite 70% Granular |
|---|---|
| Synonyms | Cal Hypo, HTH, Bleaching Powder |
| CAS number | 7778-54-3 |
| Molecular formula | Ca(ClO)2 |
| Appearance | White granules, chlorine odour |
| Available chlorine | 70.0% min |
| Moisture | 5 – 10% |
| Calcium chlorate | 1.5% max |
| Water insolubles | 3.0% max |
| Particle size | 8 – 30 mesh |
| Stability | Loss < 3% per year |
Note on transport: calcium hypochlorite is shipped under more than one UN entry depending on available chlorine and water content (for example UN1748, UN2208, UN2880, UN3485 and UN3487). The correct UN number, hydration state and moisture range for your consignment must be confirmed against the current supplier specification, Certificate of Analysis and a dangerous-goods review before shipping.
Values above are typical and are confirmed on the Certificate of Analysis issued against each batch. Tighter specifications can be quoted where a process requires them.
Packaging and supply
Available in 1 kg, 5 kg, 25 kg Drum, 500 kg Pallet. Bulk, road tanker and export drum quantities are quoted on request, including FOB and CIF terms for international shipment. Pricing shown is per pack in USD, exclusive of freight and any applicable duties.
Handling and safety
Transport classification: UN2880. Confirm the proper shipping name, hazard class and packing group against the current SDS and transport documents before shipping. Primary health hazard: Oxidiser, Class 5.1. Store in the original closed container in a cool, well-ventilated area away from incompatible materials, and handle using appropriate personal protective equipment. Read the Safety Data Sheet in full before use — it is issued with every order and is available on request before purchase.
Supply to industry only. Products are sold for legitimate industrial, laboratory and manufacturing use. We may request end-use details and business registration before releasing an order.
Frequently Asked Questions
What is calcium hypochlorite used for?
Swimming-pool chlorination, drinking-water and wastewater disinfection, sanitising, algae control and bleaching, especially where a stable solid chlorine source is preferred.
Why choose calcium hypochlorite over liquid bleach?
It is a stable solid with high available chlorine (about 70%), so it stores and transports better and loses strength more slowly than liquid Sodium Hypochlorite.
Is calcium hypochlorite dangerous?
Yes. It is a strong oxidiser that can intensify fire, is corrosive and harmful if swallowed or inhaled, and reacts dangerously with acids, ammonia, organic matter and even small amounts of water or moisture. It must be kept dry and well away from incompatible materials.
Can I mix different pool chemicals together?
No. Never mix calcium hypochlorite with acids, other chlorine types, ammonia or organic material. Doing so can cause fire, explosion or toxic gas. Add chemicals separately to the water.
What packaging and order quantities are available?
We supply calcium hypochlorite from trial quantities through to full bulk orders in suitable packaging. Contact us with your required volume for current pricing and lead time.
For further independent reference, see the Wikipedia entry on calcium hypochlorite, and browse our full Water Treatment range.
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