Calcium Hypochlorite Supplier and Exporter for Water Treatment and Industry
Content reviewed: 28 October 2026 · SUHA International Trading L.L.C., Dubai & Ankara
SUHA International Trading is a calcium hypochlorite supplier and exporter with offices in Dubai (UAE) and Ankara (Türkiye). We supply calcium hypochlorite 65% and 70% as granules, powder or tablets in 45 kg plastic drums for water treatment, swimming pools, sanitation and bleaching. Minimum order is one full container load (20ft or 40ft), quoted FOB, CFR or CIF, with a certificate of analysis and SDS for every lot.
Calcium hypochlorite (Ca(ClO)₂), also called cal hypo, HTH or granular chlorine, is the most concentrated solid chlorine disinfectant in everyday use. At 65–70% available chlorine it carries roughly five times more chlorine per kilogram than liquid sodium hypochlorite and keeps for about two years in sealed drums – which is why water utilities, pool-chemical distributors, aid agencies and importers buy it by the container.
As a bulk calcium hypochlorite supplier, we handle grade selection, Class 5.1 dangerous-goods documentation and booking with shipping lines that accept the cargo, so you receive a compliant shipment at your port – or, inside Türkiye and the UAE, at your warehouse.
- FormulaCa(ClO)₂
- CAS No.7778-54-3
- HS code2828.10
- Available Cl65% / 70%
- UN / Class2880 · 5.1
- MOQ1 FCL
What Is Calcium Hypochlorite?
Calcium hypochlorite is an inorganic compound sold as a white or greyish solid. Dissolved in water it releases hypochlorous acid (HOCl), the active disinfectant that kills bacteria, viruses and algae. In the trade it is also called cal hypo, high-test hypochlorite (HTH), chlorine granules, granular chlorine or pool shock.
Its disinfecting power depends on water pH: below about pH 7.5 most free chlorine is present as hypochlorous acid, the stronger disinfectant; at higher pH more of it becomes the weaker hypochlorite ion (OCl⁻). Because calcium hypochlorite is alkaline, pool and water-system operators check pH together with free-chlorine residual.
Calcium hypochlorite is not the same as bleaching powder (chlorinated lime). Bleaching powder has roughly 35% available chlorine; commercial calcium hypochlorite has 65–70%, so it needs about half the weight, storage space and freight for the same chlorine dose.
Key Properties of Calcium Hypochlorite
| Property | Value |
|---|---|
| Chemical formula | Ca(ClO)₂ |
| Molar mass | 142.98 g/mol |
| Appearance | White or greyish granules, powder or tablets |
| Available chlorine | 65–70% (commercial grades) |
| Solubility in water | 21 g/100 mL (25 °C) |
| pH (1% solution) | About 11–12 (alkaline) |
| Density | About 2.35 g/cm³ |
| Decomposition | From about 175 °C; faster with heat, moisture or contamination |
| Odour | Characteristic chlorine smell |
| Shelf life | About 24 months, sealed, cool and dry |
Commercial grades also contain a small insoluble fraction (see the technical data sheet), so many operators dissolve granules in a separate tank and dose the clear solution.
How Calcium Hypochlorite Is Made: Calcium Process vs Sodium Process
Calcium hypochlorite is made by chlorinating calcium hydroxide (slaked lime):
2Cl₂ + 2Ca(OH)₂ → Ca(ClO)₂ + CaCl₂ + 2H₂O
The crude product is filtered, dried, then granulated or pressed into tablets. Every calcium hypochlorite manufacturer uses one of two industrial routes, and the route largely decides the grade:
- Calcium process – chlorination of lime alone. Simpler, but it leaves more calcium chloride in the product, typically giving around 65% available chlorine.
- Sodium process – sodium hydroxide (caustic soda) is added so the by-product chloride leaves as sodium chloride. It gives a purer product with up to about 70% available chlorine and better storage stability.
Both routes depend on chlor-alkali plants for chlorine and caustic soda, so calcium hypochlorite costs move with chlor-alkali economics.
Buying from a manufacturer or from a calcium hypochlorite trading company? A producer usually sells one plant's output on fixed terms; a trading company such as SUHA works with several approved sources, so we can match grade, form, packing and shipping date to your order and handle export documents from one desk.
Calcium Hypochlorite 65% and 70%: Grades, Granules and Tablets
As a calcium hypochlorite 65% supplier and calcium hypochlorite 70% supplier, we offer both strengths, so you can choose between lower cost per tonne and more chlorine per kilogram.
Calcium Hypochlorite 65%
- Available chlorine: min 65%
- Lower price per tonne
- Higher calcium chloride content – keep drums tightly closed
- Typical buyers: municipal and rural water chlorination, sanitation, bleaching
Calcium Hypochlorite 70%
- Available chlorine: min 70%
- Purer, better storage stability
- Lower dose and freight per kg of chlorine
- Typical buyers: pool-chemical brands, distributors, drinking-water tenders
Lower-strength blends (40–60%) and bleaching powder (about 35%) are different products. Our offer covers the 65% and 70% grades.
Granules, powder and tablets
- Granular – the main export form. As a calcium hypochlorite granules supplier, we ship granules for shock chlorination, batch dosing and dissolving tanks.
- Powder – dissolves fastest; used in mixing tanks and bleaching.
- Tablets – slow-dissolving tablets for erosion feeders, pools and small water systems. As a calcium hypochlorite tablets supplier, we confirm tablet weight and dissolution rate on the quotation.
Calcium hypochlorite compared with other chlorine sources
| Product | Form | Typical available chlorine | When buyers choose it |
|---|---|---|---|
| Calcium hypochlorite | Granules, powder, tablets | 65–70% | Concentrated, long shelf life, easy to ship and store; adds calcium hardness |
| Sodium hypochlorite | Liquid | About 10–15% | On-site pump dosing where liquid handling exists; loses strength faster in storage |
| TCCA (trichloroisocyanuric acid) | Tablets, granules | About 90% | Stabilised outdoor-pool chlorine; adds cyanuric acid, which builds up over time |
| Bleaching powder (chlorinated lime) | Powder | About 35% | Low-cost sanitation where strength and stability matter less |
Never mix calcium hypochlorite with TCCA or other chlorine products – see the safety section.
Technical Data Sheet: Calcium Hypochlorite 65–70%
These are the specification limits we supply against, including heavy-metal limits relevant to drinking-water use. The full analysis is also available as a PDF: Calcium Hypochlorite 65-70% TDS.
| Parameter | Standard limit | Supplied specification | Standard reference |
|---|---|---|---|
| Active chlorine, % w/w | Min 65 | Min 65 | ISIRI 7098 & 3352 |
| Sodium chloride, % w/w | Max 20 | Max 10 | ISIRI 7098 |
| Solubility as active chlorine, % w/w | Min 45.5 | Min 50 | ISIRI 7098 |
| Insoluble in water, % w/w | Max 8 | Max 8 | ISIRI 7098 |
| Water, % w/w | 2 – 8 | 2 – 8 | ISIRI 7098 |
| Residue on 425 µm sieve, % w/w | Min 75 | Min 75 | ISIRI 7098 & 3352 |
| Residue on 2 mm sieve, % w/w | Max 20 | Max 20 | ISIRI 7098 & 3352 |
| Cd, mg/kg of active chlorine | Max 10 | Nil | ISIRI 7098 |
| Pb, mg/kg of active chlorine | Max 15 | Nil | ISIRI 7098 |
| Ni, mg/kg of active chlorine | Max 10 | Max 8 | ISIRI 7098 |
| Cr, mg/kg of active chlorine | Max 15 | Max 12 | ISIRI 7098 |
| As, mg/kg of active chlorine | Max 10 | Max 5 | ISIRI 7098 |
| Hg, mg/kg of active chlorine | Max 7 | Max 5 | ISIRI 7098 |
| Sb, mg/kg of active chlorine | Max 15 | Max 15 | ISIRI 7098 |
| Se, mg/kg of active chlorine | Max 20 | Max 10 | ISIRI 7098 |
| Fe, % w/w | Max 0.5 | Max 0.15 | ISIRI 3352 |
| Appearance | White, granulated | Conforms | ISIRI 7098 |
Each shipment is released with a certificate of analysis showing the actual lot results.
Calcium Hypochlorite 65-70% – technical data sheet (PDF)
Active chlorine · NaCl · solubility · water · sieve analysis · heavy metals · Fe
How Much Calcium Hypochlorite Do You Need?
Every 1 mg/L (ppm) of chlorine in 1 m³ of water needs 1 g of available chlorine. Divide by the product strength to get the weight of calcium hypochlorite:
grams = volume (m³) × target dose (mg/L) ÷ available chlorine (as a fraction)
Theoretical figures only. Organic matter, ammonia and sunlight consume chlorine, so real demand is higher. For drinking water, WHO guidance is a free-chlorine residual of at least 0.5 mg/L after 30 minutes' contact at pH below 8, with 5 mg/L as the health-based guideline value. Always confirm with a residual test and follow your local regulations.
Applications and Uses of Calcium Hypochlorite
1. Water treatment and purification
The largest end use – about 47% of global revenue in 2025, according to Grand View Research. Used for drinking water, small and rural systems, wells, tanks and emergency chlorination, because a dry solid is easier to store and transport than chlorine gas or liquid bleach.
2. Swimming pools
Pool shock and daily chlorination for public, hotel and residential pools. It adds no cyanuric acid, but it raises calcium hardness and pH.
3. Industrial and domestic disinfection
Hospitals, food plants and households use it to sanitise surfaces, equipment and wastewater.
4. Bleaching
An oxidising bleach in textile, paper and detergent manufacturing.
5. Agriculture and livestock
Disinfection of irrigation lines, animal drinking water and farm equipment.
6. Food, beverage and wastewater
Sanitation of food-contact surfaces, bottling lines and process water, and pathogen control at wastewater plants.
Why buyers choose calcium hypochlorite
- High strength: 65–70% available chlorine – less weight to buy, ship and store per kg of chlorine.
- Long shelf life: about two years in sealed drums kept cool and dry.
- Easy handling: a dry solid that small systems can dose without gas or pump equipment.
- Broad disinfection: effective against bacteria, viruses, fungi and algae.
Bulk Packing and Container Loading
As a calcium hypochlorite bulk supplier, we pack in moisture-proof plastic drums with sealed lids, labelled for Class 5.1 dangerous goods. The 45 kg drum is the standard for sea freight because it meets the industry package limit.
| Item | Details |
|---|---|
| Sea-freight packing | 45 kg plastic drums (standard); 25 kg plastic drums |
| Other packing | 50 kg HDPE drums and 1000 kg jumbo bags – only where the carrier or road route accepts them |
| Payload per container (most shipping lines) | Up to 14 MT net, per the IG/CINS guidelines |
| Physical capacity | 20ft about 19.8–20 MT · 40ft about 24 MT – only on carriers or routes that allow it |
| UN number | UN 2880 (hydrated, standard supply) or UN 1748 (dry), Class 5.1, PG II |
| Labelling | Class 5.1 oxidiser, UN number, GHS hazard labels |
Shipping line rules for calcium hypochlorite
Calcium hypochlorite is a Class 5.1 oxidiser under the IMDG Code. After several container-ship fires, the International Group of P&I Clubs and CINS (the Cargo Incident Notification System) published guidelines that most container lines now apply: packages of no more than 45 kg net in plastic drums, a maximum of 14 tonnes of calcium hypochlorite per container, and stowage away from heat sources. We confirm the accepted packing, weight and stowage with the line before we quote, so the booking is not refused at the terminal.
50 kg drums and jumbo bags exceed the 45 kg IG/CINS package limit – most container lines will not accept them by sea.
Estimate only. Final package and container counts are confirmed on the packing list for each contract.
Calcium Hypochlorite Wholesale for Distributors and Importers
With a dangerous-goods product, a good calcium hypochlorite supplier is judged on paperwork and shipping as much as on chlorine content. We work as a calcium hypochlorite trading company and bulk supplier, offering wholesale terms by the container:
Who we supply
- Water utilities and EPC contractors
- Calcium hypochlorite distributors and pool-chemical wholesalers
- Importers and re-exporters
- Aid and tender buyers
- Textile, paper and detergent plants
- Food, beverage and livestock operations
Commercial terms
- MOQ: one full container load (20ft or 40ft)
- Incoterms: FOB, CFR or CIF
- Loading: Jebel Ali (UAE) or Mersin (Türkiye); road freight from Türkiye on request
- Granular, powder or tablets
- Neutral or private-label drums on request
Shipping documents
- Commercial invoice and packing list
- Bill of lading
- Certificate of origin
- Certificate of analysis per lot
- Safety Data Sheet (SDS)
- IMDG dangerous goods declaration
Standards and tender specifications
Drinking-water tenders often reference EN 900 (calcium hypochlorite for water intended for human consumption), AWWA B300 (hypochlorites) or NSF/ANSI/CAN 60 certification. Humanitarian buyers use their own specifications: UNICEF's catalogue item, for example, asks for HTH-equivalent granules with at least 67% available chlorine at packing (65% guaranteed), at most 10% moisture (UN 2880), a heat-stability test and airtight polyethylene drums. Send us the specification in your tender and we will confirm whether the offered lot meets it before contract.
How to order
- Send your RFQ – grade, form, quantity, packing, destination and Incoterm.
- Receive a dated quotation – with the TDS, SDS and the carrier-accepted container loading.
- Confirm the contract – lot specification, labelling and payment terms.
- Loading and documents – dangerous-goods booking, certificate of analysis and shipping documents for customs clearance.
What to include in your RFQ
- Grade and form: 65% or 70%, granular, powder or tablets
- Quantity in MT and number of containers
- Packing: 25 kg or 45 kg drums, or other packing for road delivery
- Destination port (or Turkish/UAE city) and Incoterm
- Required standard or tender specification, if any
- Required shipment month
- Labelling language or private-label needs
- Preferred payment terms
Calcium Hypochlorite Price: What Drives It
There is no exchange-traded benchmark for calcium hypochlorite, so the price per ton is set contract by contract. These are the factors behind every quotation:
- Available chlorine – 70% (sodium process) sells above 65% (calcium process).
- Form – tablets cost more than granules because of pressing and packing.
- Packing – drum size and private labelling change cost per tonne.
- Chlorine, caustic soda, lime and energy – the main cost drivers at the producer.
- Freight – dangerous-goods surcharges and the 14 MT-per-container limit raise sea freight per tonne compared with ordinary chemicals.
- Season – the northern-hemisphere pool season tightens supply in spring and summer.
- Trade measures – some importing countries apply anti-dumping or countervailing duties to certain origins; the United States, for example, applies extra duties to calcium hypochlorite from China.
For a firm calcium hypochlorite price, send your grade, quantity and destination – we reply with a dated quotation.
Calcium Hypochlorite Market and Trade Flows
Grand View Research valued the global calcium hypochlorite market at about USD 746 million in 2025 and forecasts about USD 1.43 billion by 2033, growth of 8.8% a year. Water treatment is the largest application (about 47% of revenue) and Asia Pacific the largest region (about 44%).
| Exporter | Exports (thousand tonnes) |
|---|---|
| China | 95 |
| India | 37 |
| South Africa | 19 |
| Japan | 18 |
| United States | 18 |
Source: World Bank WITS trade data, as reported in the US EPA calcium hypochlorite supply-chain profile (2023).
What this means for buyers in Europe, the Middle East, Africa, Latin America and Central Asia: supply is concentrated in a few Asian producing countries, carriers limit how much can be loaded per container, and some markets apply duties by origin. Sourcing through a supplier that works with several approved producers and two loading ports – Jebel Ali and Mersin – reduces the risk of a single plant or route failing.
Calcium Hypochlorite Supplier in Turkey and the UAE
From our Ankara office we work as a calcium hypochlorite supplier in Turkey for both domestic buyers and export customers; from Dubai we serve the UAE and Gulf markets. Inside Türkiye we deliver to all 81 provinces and inside the UAE to all seven emirates. For export we load at Mersin and Jebel Ali, and we can ship overland by truck from Türkiye to neighbouring markets.
Domestic supply in Türkiye and the UAE
- Delivery to all 81 Turkish provinces and all 7 emirates
- Drums for distributors, pool-chemical wholesalers and municipalities
- Turkish customs tariff (GTİP): 2828.10
- Turkish-language SDS and labels on request
Calcium hypochlorite export from Turkey
- Loading at Mersin port, or by road
- FOB Mersin, CFR or CIF your port
- IMDG dangerous-goods booking and declaration
- Certificate of origin and lot certificate of analysis
Compliance in Türkiye
Chemicals placed on the Turkish market fall under KKDIK, Türkiye's chemical registration regulation; since 30 September 2026 every registrable substance needs at least a provisional registration number. Where calcium hypochlorite is sold as a disinfectant – for example for pools or drinking water – the final product also needs a biocidal product licence from the Ministry of Health. Ask us for the registration status of the lot offered before you contract.
Handling, Storage and Safety
- Storage: cool, dry and well ventilated, below about 30–35 °C, out of direct sunlight, away from moisture, acids and flammable or organic materials. Keep drums tightly closed and upright.
- Handling: wear gloves, safety goggles and respiratory protection. Avoid contact with skin and eyes.
- Dissolving: always add the product to water – never water to the product.
- Disposal: follow local environmental regulations.
Never mix calcium hypochlorite with:
- Acids – releases toxic chlorine gas
- Ammonia or ammonium compounds – forms toxic chloramines
- TCCA, dichlor or other chlorine products – can cause fire or explosion
- Oils, solvents, sugar, sawdust or other organic matter – fire risk
A Safety Data Sheet (SDS) is supplied with every shipment.
Calcium Hypochlorite FAQ
What is calcium hypochlorite used for?
Calcium hypochlorite is mainly used to disinfect drinking water, swimming pools and wastewater. It is also used to sanitise surfaces and equipment in food, beverage and healthcare settings, to disinfect irrigation and livestock water, and as a bleaching agent in textile, paper and detergent manufacturing.
Is calcium hypochlorite the same as chlorine or bleach?
Calcium hypochlorite is a solid source of chlorine: in water it releases the same active disinfectant, hypochlorous acid, as household bleach. Household bleach is liquid sodium hypochlorite at a few percent strength, while calcium hypochlorite is a dry granule or tablet with 65–70% available chlorine.
Is calcium hypochlorite the same as bleaching powder?
No. Bleaching powder (chlorinated lime) has roughly 35% available chlorine, while commercial calcium hypochlorite has 65–70%. Calcium hypochlorite therefore needs about half the weight for the same chlorine dose and stores better.
What is the difference between 65% and 70% calcium hypochlorite?
The percentage is the available chlorine. 70% grades are usually made by the sodium process and contain less calcium chloride, so they are purer and more stable in storage. 65% grades are often made by the calcium process and cost less per tonne.
Is calcium hypochlorite safe for drinking water?
Yes, when it is dosed correctly. Calcium hypochlorite is one of the most widely used chemicals for drinking-water disinfection. For potable use, check the heavy-metal limits on the technical data sheet and any standard your regulator or tender requires, such as EN 900, AWWA B300 or NSF/ANSI/CAN 60.
How much calcium hypochlorite do I need per 1,000 litres of water?
To raise 1,000 litres (1 m³) of water by 1 mg/L of chlorine you need about 1.4 g of 70% calcium hypochlorite or 1.5 g of 65%. For emergency household treatment, the US EPA suggests dissolving one heaping teaspoon of granular calcium hypochlorite in two gallons of water to make a stock solution, then adding one part of that solution to 100 parts of water.
Calcium hypochlorite or sodium hypochlorite – which is better?
Calcium hypochlorite is a solid with 65–70% available chlorine and a shelf life of about two years, so it is cheaper to ship and store. Sodium hypochlorite is a liquid with about 10–15% available chlorine that is easy to pump but loses strength faster. Solid calcium hypochlorite suits remote sites, export and long storage; liquid suits plants with existing pump dosing.
Is calcium hypochlorite good for swimming pools?
Yes. Calcium hypochlorite is a common pool shock and daily chlorinator. Unlike TCCA it adds no cyanuric acid, but it raises calcium hardness and pH, so pool operators monitor both.
What is the shelf life of calcium hypochlorite?
About 24 months in sealed original drums stored cool, dry and out of sunlight. Heat, humidity and opened drums speed up the loss of available chlorine, so use stock first in, first out and reseal drums immediately.
Is calcium hypochlorite dangerous? Can it explode?
It is a strong oxidiser and corrosive. It can start fires or react violently if mixed with acids, ammonia, organic materials or other chlorine products such as TCCA, or if it is contaminated and heated. Stored cool, dry, sealed and separated from incompatible materials, and handled with gloves, goggles and respiratory protection, it is used safely worldwide.
How do you dissolve calcium hypochlorite?
Always add calcium hypochlorite to water, never water to the product. Stir in a clean plastic container, let the insoluble residue settle and dose the clear solution. Use a container that has never held acids or other chemicals.
What is the HS code and UN number for calcium hypochlorite?
Calcium hypochlorite is classified under HS code 2828.10. For transport the standard hydrated commercial grade is UN 2880 and the dry grade is UN 1748, both Class 5.1 oxidiser. Its CAS number is 7778-54-3.
How many tonnes of calcium hypochlorite fit in a container?
Physically a 20ft container holds about 19.8–20 tonnes and a 40ft about 24 tonnes, but most shipping lines follow the IG/CINS guidelines, which limit calcium hypochlorite to 14 tonnes per container in drums of no more than 45 kg. We confirm the accepted weight with the carrier before quoting.
What is the minimum order and how is calcium hypochlorite packed?
Our minimum order is one full container load, 20ft or 40ft. For sea freight we pack in 45 kg or 25 kg plastic drums with sealed lids; 50 kg drums and jumbo bags are only used where the carrier or road route accepts them.
What is the price of calcium hypochlorite per ton?
Calcium hypochlorite price depends on available chlorine (65% or 70%), form (granules or tablets), packing, quantity, Incoterm and dangerous-goods freight. There is no public benchmark, so send your grade, quantity and destination for a dated quotation.
How big is the calcium hypochlorite market?
Grand View Research valued the global calcium hypochlorite market at about USD 746 million in 2025 and expects about 8.8% annual growth to 2033. Water treatment is the largest application and Asia Pacific the largest region. China and India are the largest exporters.
Should I buy from a calcium hypochlorite manufacturer or a supplier?
A manufacturer sells one plant's output on its own terms and minimums. A supplier or trading company works with several approved producers, so it can offer both 65% and 70% grades, granules and tablets, mixed packing and flexible shipping dates, and handles export documents and dangerous-goods booking for you.
How do I choose a reliable calcium hypochlorite supplier?
A reliable calcium hypochlorite supplier publishes a technical data sheet, provides a certificate of analysis and SDS for every lot, packs in UN-approved moisture-proof drums of no more than 45 kg, can book Class 5.1 cargo with shipping lines and states MOQ, packing and container loading clearly.
Can you supply calcium hypochlorite for tenders?
Yes. Send the tender specification – for example EN 900, AWWA B300, NSF/ANSI/CAN 60 or an aid-agency specification – and we confirm whether the offered lot meets it before contract, with a certificate of analysis for the shipped lot.
Do you supply calcium hypochlorite in Turkey and the UAE?
Yes. From Ankara we supply calcium hypochlorite to all 81 provinces of Türkiye, and from Dubai to all seven emirates. For export we load at Mersin or Jebel Ali, FOB, CFR or CIF, and can ship by road from Türkiye.
Request a Calcium Hypochlorite Quotation
Fill in the form and send it by email or WhatsApp. We reply with a dated quotation, the technical data sheet and the SDS.
Email: info@causticsodaco.com · WhatsApp: +971 50 720 9246