Products
Granular chlorine is the workhorse form of solid chlorine disinfection: a free-flowing, fast-acting material that can be broadcast, pre-dissolved, or metered into virtually any water treatment process. Everglory Industrial supplies granular chlorine in three chemistries — calcium hypochlorite (65-70% available chlorine), trichloroisocyanuric acid (TCCA, 90% available chlorine), and sodium dichloroisocyanurate (SDIC, 56%/60%) — each available in 8-30 mesh and 14-50 mesh particle grades. All products ship in UN 2880 certified plastic drums, backed by ISO 9001 quality management and export experience covering more than 60 countries.
Granular Chlorine Grades Available
Selecting the correct granular chlorine chemistry is the first procurement decision. The table below compares the four grades we export most frequently:
Mesh Size Selection Guide
Every granular chlorine grade is produced in two mesh ranges. Coarser 8-30 mesh granules dissolve more slowly and flow cleanly through erosion feeders and dry-feed equipment, while finer 14-50 mesh granules dissolve within minutes and are ideal where a concentrated solution must be prepared before dosing:
Granular Chlorine Specifications
Applications by Industry
- Swimming pools and spas: The largest market for granular chlorine — daily maintenance dosing, shock chlorination, and season opening treatments for residential and commercial facilities
- Municipal drinking water: Calcium hypochlorite 70% granular provides a stable, transportable chlorine source for rural and small-city water systems where chlorine gas is impractical
- Industrial cooling water: Scheduled biofouling control in cooling towers and recirculating systems, preventing Legionella growth and heat-exchanger fouling
- Wastewater treatment: Effluent disinfection before discharge, with granular dosing simplifying storage compared with liquid chlorine or gas systems
- Aquaculture: Hatchery and pond disinfection between growing cycles, equipment sanitation, and water hygiene programs in shrimp and fish farming
- Emergency relief: Rapid-deployment water purification for NGOs, disaster response, and refugee camp operations, where drum-packed granular chlorine can be airfreighted quickly
Choosing the Right Granular Chlorine Chemistry
- Outdoor pool in strong sunlight: Choose TCCA 90%. Its cyanuric acid stabilizer shields chlorine from UV degradation, extending residual life and reducing re-dosing frequency
- Indoor pool or all-purpose inventory: Choose calcium hypochlorite 70%. Unstabilized, fast-acting, and effective across the widest range of applications, it is the most versatile single product to stock
- Fast dissolve with near-neutral pH: Choose SDIC 56% or 60%. It dissolves quickly with minimal pH shift, suiting spas, vinyl-lined pools, and sensitive treatment processes
- Budget bulk disinfection: Choose calcium hypochlorite 65%. It delivers dependable disinfection at the lowest unit cost for large-volume industrial and municipal buyers
Packaging and Container Loading
All granular chlorine shipments are packed in UN-certified plastic drums with sealed closures, fully compliant with IMDG dangerous goods regulations:
For container planning, a 20ft container typically loads 20-26 MT of granular chlorine depending on drum size mix, while a 40ft container loads approximately 25-27 MT, limited by dangerous goods weight restrictions rather than volume. Our logistics team provides exact loading plans, drum stacking diagrams, and IMDG documentation for every booking.
Quality Assurance
Every batch of granular chlorine leaving our plant is produced under an ISO 9001 certified quality management system. Available chlorine content, moisture, and granulometry are verified in our laboratory before packing, and a Certificate of Analysis (COA) accompanies each order. We supply a complete MSDS in English, French, or Spanish, and all products are classified and packed under UN 2880 (calcium hypochlorite) or UN 2468 (TCCA) dangerous goods standards. Third-party inspection by SGS, BV, or TUV can be arranged at the buyer's request before shipment.
Frequently Asked Questions
Q: What is the difference between calcium hypochlorite, TCCA, and SDIC granular chlorine?
Calcium hypochlorite offers 65-70% available chlorine with no stabilizer and adds calcium to water. TCCA delivers 90% available chlorine and includes cyanuric acid stabilization against UV loss. SDIC (56%/60%) dissolves fastest with a near-neutral pH effect. All three are available from Everglory as granular chlorine in 8-30 and 14-50 mesh.
Q: Which granular chlorine grade is best for drinking water treatment?
Calcium hypochlorite 70% granular is the standard choice for potable water disinfection in most markets because it is unstabilized — it leaves no cyanuric acid residue, which is not permitted in drinking water. We provide the COA and documentation required for water utility approval.
Q: What is the shelf life of granular chlorine?
Stored in the original sealed drum in a cool, dry, ventilated area, our granular chlorine carries a 24-month shelf life from production date. Available chlorine loss is typically under 3% per year under proper storage conditions.
Q: What does 8-30 mesh or 14-50 mesh mean?
Mesh numbers describe particle size: 8-30 mesh is a coarser cut (roughly 0.6-2.4 mm) for controlled dissolution and feeder dosing, while 14-50 mesh is finer (roughly 0.3-1.4 mm) and dissolves in minutes for pre-dissolved applications. Your application and dosing equipment determine the best choice.
Q: What is your minimum order quantity for granular chlorine?
Trial orders start from 1 metric ton. For freight efficiency we recommend full container loads — a 20ft container carries 20-26 MT depending on drum size. OEM private label orders require a minimum of 5 tons.
Q: How is granular chlorine shipped internationally?
As a Class 5.1 oxidizer, granular chlorine ships in UN-certified plastic drums under IMDG code by sea. We prepare the full document set — commercial invoice, packing list, COA, MSDS, certificate of origin, and DG declaration — for smooth customs clearance in your destination country.
Need multi-grade granular chlorine supply? Contact Everglory Industrial for a quotation covering calcium hypochlorite 65-70%, TCCA 90%, or SDIC 56/60% in your required mesh and drum size. Our export team replies within 24 hours in English, French, or Spanish, with CIF pricing to your destination port.
