Description
Basic Information of Calcium Hypochlorite Tablet 200g
Chemical Name: Calcium Hypochlorite
CAS No.: 7778-54-3
EINECS No.: 231-908-7
Molecular Formula: Ca(ClO)₂
Molecular Weight: 142.98 g/mol
UN No.: 1748 / 2880 (Calcium hypochlorite, dry / hydrated, oxidizing solid)
Hazard Class: 5.1 Oxidizing Solid
*Note: Usually, commercial calcium hypochlorite tablets comprise mainly calcium hypochlorite, along with minor quantities of calcium chloride, calcium hydroxide, sodium chloride, and other salts resulting from the manufacturing process.
Technical Data
Items | Parameters | *Typical Value |
CAS No. | - | 7778-54-3 |
Molecular Formula | - | Ca(ClO)₂ |
Molecular Weight | g/mol | 142.98 |
Appearance | - | White / off-white 200 g tablet |
Available Chlorine | % | 65–70 |
Moisture (as H₂O) | % | ≤ 10 |
Water-Insoluble Matter | % | ≤ 5 |
Sodium Chloride (NaCl) | % | ≤ 15 |
Calcium Salts (as CaCl₂, Ca(OH)₂ etc.) | % | ≤ 10–15 (combined) |
pH (1% aqueous solution) | - | 10.5–11.5 |
Tablet Diameter | mm | 75–80 (customizable) |
Tablet Weight | g | 200 ± 5 |
*Values stand for the standard reference data whereby final standard specs may change according to customers’ needs and local standards.
Qc Industry’s Calcium Hypochlorite Tablet 200g is a top-quality and solid disinfectant with high chlorine availability meant for the professional swimming pool and water treatment solutions. Each tablet of this product has an availability of 65-70% chlorine and weighs 200 g, which is pressed under strict quality control to ensure:
- Uniform size and weight of the tablets
- Slow and controlled dissolving of the tablets
- Release of free chlorine that is stable and predictable
Calcium hypochlorite tablets, unlike trichloroisocyanuric acid (TCCA) tablets, do not add any cyanuric acid (CYA) to the water. This gives much more freedom to the technicians to separately manage stabilizer levels and thus avoid the problem of overstabilization in high-sunlight areas for a long time.
What is Calcium Hypochlorite Tablet 200g?

The 200g Calcium Hypochlorite Tablet is a big-size tablet disinfectant of slow-dissolving type and chlorine-based disinfectant. It is made of calcium hypochlorite. The product is meant for use in:
- Uninterrupted pool water disinfection
- Heavy contamination shock treatment
- Disinfection of tanks, pipelines, and small water systems (where allowed)
One tablet is an easy-to-use “chlorine unit” that makes dispensing and handling much simpler than the case of granules or liquids.
Why Choose Calcium Hypochlorite Tablet 200g?
- Highly available chlorine (65–70%)
The product offers exceptionally strong sanitizing and oxidizing power against a wide range of microorganisms and contaminants including bacteria, viruses, algae, and organic pollutants, thus making it an excellent choice for water treatment. - Free from CYA accumulation
This product is characterized by its unstabilized chlorine source. You can independently manage the stabilizer (cyanic acid) according to the weather conditions and regulations. - Reliable slow-release behavior
Large 200 g tablets dissolve slowly in the skimmers, feeders, or floater, making chlorine levels constant with minimal labor in less than half the time. - Solid state, long shelf life
This product is much easier to store and transport compared with liquid sodium hypochlorite, and it also presents a much lower risk of leakage and concentration loss. - Professional exporting experience
Qc Industry specializes in pool & water-treatment chemicals, providing global customers with consistent quality, reliable loading plans, and documentation.
Who is It for?

- Commercial & public pools
Municipal pools, aquatic parks, competition pools, etc. - Hospitality projects
Clear, safe, well-balanced water is a must for swimming pools in hotels, resorts, spas, and villas. - Professional service companies
Pool service providers that require a powerful and dependable chlorine source to service several locations. - Water-treatment operators
Calcium hypochlorite tablet is approved as a disinfectant in wells, storage tanks, small water systems, and some industrial-water applications.
Where Can the 200g Calcium Hypochlorite Tablet be Used?

- Swimming pools or spas outdoors and indoors.
- Swimming pools for residential use and pools for community use.
- Water supply wells, tanks, and pipes (if allowed by the law).
- Cooling towers and industrial water circulation systems.
- Areas like surfaces, floors, and sanitary places in agriculture, education, manufacturing, and public sectors (depending on local regulations).
When Should the Cal Hypo Tablets 200g be Applied?
- Daily / continuous chlorination
For the purpose of getting the desired free-chlorine residual in swimming pools and reservoirs. - Shock treatment
In case of high bather load, rainstorms, contamination incidents, or algae presence. - Start-up & commissioning
Completed swimming pools, emptied basins, disinfection of tanks and pipelines prior to start-up. - Regular sanitation cycles
Water tanks, piping networks, and equipment in industrial or agricultural settings undergo periodic disinfection.
How to Use the Calcium Hypochlorite Tablet 200g?
- Test water parameters
First of all check the free chlorine level, pH, total alkalinity and calcium hardness. - Determine dosage
Calculate the required amount of chlorine based on the swimming pool volume and the desired residual level (for example 1-3 ppm free chlorine for pools, according to local standards). - Add tablets
Calcium Hypochlorite Tablet 200g can be placed in the feeder (inline/chlorinator designed for cal hypo)
In smaller pools, where local practice allows, a floating dispenser/skimmer basket can be used. - Adjust feed rate / tablet quantity
Stabilize the chlorine residual by fine-tuning the number of tablets or flow rate. - Monitor water regularly
Day by day, increase or decrease the dosage based on the number of bathers, water temperature, sunlight and rain - Safety rules
In no case should you mix calcium hypochlorite with other chlorine products or acids. Always check that you’re following the equipment instructions and local regulations.
(Exact dosage must be determined by local regulations, water conditions and professional advice.)
Performance & Benefits
- Strong disinfection & oxidation
Water clarity and safety are improved by the rapid killing of bacteria, viruses, algae, and other organic matter. - Unstabilized chlorine, flexible water management
Cyanuric acid is not added, which means that it is easier to separately manage stabilizer levels in high-UV regions and also to prevent CYA over-accumulation. - Slow dissolving, less fluctuation
Chlorine release curve is more even. Therefore, the risk of “peaks and valleys” happening is lower compared with sporadic manual dosing. - Suitable for wide climate range
The product is good for hot and mild climate. It is perfect for outdoor pools that are very sunny when combined with independent CYA control. - Professional sourcing & export
Qc Industry guarantees the highest quality, best prices, free choice of packaging and the most synchronized logistics for world-wide importers and distributors.
Packaging, Storage & Shelf Life
Standard Packaging (Customizable)
- 10 kg plastic drum
Approximately 50 × 200 g tablets - 20 kg plastic drum
Approximately 100 × 200 g tablets - 25 kg plastic drum
Approximately 125 × 200 g tablets - 45–50 kg plastic drum
Bulk tablets for large commercial users or repackers

Inner Protection:
Heavy-duty PE liner or sealed inner bag
Optional: individually wrapped tablets for retail or high-safety markets
Label Content:
- Product name & grade: Calcium Hypochlorite Tablet 200g, 65–70% available chlorine
- Net weight, batch number, production date, shelf life
- Hazard pictograms and safety wording (oxidizing solid, 5.1)
- Handling, storage and first-aid instructions
- Manufacturer / Exporter: Qc Industry
Storage Conditions
- Store in original, tightly closed containers
- Keep in a cool, dry, well-ventilated place
- Protect from direct sunlight, heat sources and open flames
- Keep away from acids, organic materials, solvents and reducing agents
- Avoid contamination with dust, oil, metal filings or other chemicals
Shelf Life
- Typically 1–2 years in unopened drums under recommended storage conditions
- Available chlorine content will gradually decrease over time, adjust dosage if using older stock.
Frequently Asked Questions
Question 1. What are the uses of the Qc Industry’s Calcium Hypochlorite Tablet 200g?
Answer: It is the top disinfectant for any aquatic activity while keeping water clean and safe in general with its high-strength chlorine disinfectant properties, swimming pool, spa, and water-treatment system disinfectant. The 200g slow-dissolving tablet releases free chlorine to kill bacteria, virus, algae, and other water impurities, making the water clear and safe.
Question 2. What is the distinction between TCCA tablets and Calcium hypochlorite tablets?
Answer: The calcium hypochlorite tablets don’t inhibit their action: the CYA is not introduced into the water with them. TCCA tablets introduce a stabilizing agent with each dose. In case of calcium hypochlorite, CYA is managed separately. It is possible to steer clear of pools with strong sunlight where chlorine gets overstabilized and “locked”.
Question 3. How can I use these 200g tablets in a swimming pool?
Answer: It is acceptable to put the tablets in the inline/offline chlorinator, floating dispenser, or skimmer basket (wherever allowed). Change the number of tablets or feed rate to keep the free-chlorine level within the recommended range (1–3 ppm for pools), and conduct water testing frequently.
Question 4. Will the usage of calcium hypochlorite lead to an increase in calcium hardness?
Answer: Calcium hypochlorite contributes both chlorine and calcium to the water upon dissolution. In the long run, frequent use might raise calcium hardness, particularly in hard-water regions. Testing and introducing some fresh water from time to time will help to maintain the calcium level.
Question 5. How are tablets to be stored, and what is their shelf life?
Answer: Store the drums in a cool, dry, well-ventilated area that is out of direct sun, heat, acid, organic matter, and other pool chemicals. If the tablets are stored correctly, they usually have a shelf life of 1–2 years, with the amount of available chlorine slowly decreasing over time.
Qc Industry – Your Partner in Pool & Water Treatment Chemicals
When you select Calcium Hypochlorite Tablet 200g from Qc Industry, both the distributers and the end users will benefit from:
- Consistent, reliable product quality and specifications.
- Various packing and private label / OEM alternatives.
- Assistance for the entire water treatment process, from dosage to product selection.
- Unambiguous documentation for customs, transport and local registrations.
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