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Sodium Dichloroisocyanurate (SDIC) Used for Fabric Finishing Agent
Product Description
Alias: excellent chlorine net
Formula: C≡Cl₂ N≡N≡NaO₂
Molecular weight: 219.9462
CAS NO. : 2893-78-9
Specification:
| Chemical Name | Sodium Dichloroisocyanurate |
| Available Chlorine Content | ≥56% (Higher-content products (60%-62%) available) |
| Appearance | White powder, granules, 1g-200g Tablet |
| PH (1% solution) | Approximately 5.5-7.0, slightly acidic, making it more effective in disinfection. |
Application
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1. Pool and Spa Disinfection
As one of the top choices for pool disinfection, SDIC tablets slowly dissolve, continuously and steadily releasing chlorine, effectively maintaining residual chlorine levels in pool water, killing pathogens and algae in the water, and maintaining a clear, blue water.
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2. Drinking Water Disinfection and Emergency Water Treatment
SDIC is approved for drinking water disinfection. It rapidly kills pathogenic microorganisms such as cholera and typhoid in water and is widely used in municipal water supply, emergency water supply in disaster areas, and personal outdoor drinking water safety.
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3. Public Health and Medical Institution Disinfection
It is used to disinfect floors, walls, surfaces, and non-metallic medical devices in hospitals, schools, hotels, and public places.
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5. Aquaculture and Agriculture
It is used for disinfecting aquaculture ponds, environmental disinfection of livestock and poultry houses, and fungal treatment of seeds.
Regular packing
Packing: 25kg or 50kg plastic drum or cardboard drum, 1000kg plastic woven bag
Customer-specified packaging
How to use
| Application Scenario | Recommended effective chlorine concentration | Usage instructions |
| Swimming pool water disinfection | 1-3 ppm(Maintain concentration) | Use tablets and applicators to achieve continuous disinfection.Regularly test residual chlorine and maintain pH at 7.2-7.8. |
| Drinking water disinfection | 0.5-2 ppm(Maintaining residual chlorine) | Must use"Drinking water grade"SDIC.Disinfection contact time is not less than30minutes,the residual chlorine in the end water must meet local standards (usually0.3-0.5ppm). |
| General surface disinfection | 500-1000 ppm | After diluting with the mother solution,spray or wipe the area for disinfection.Leave it on for 10-30 minutes,then rinse with clean water. |
| public places/Hospital disinfection | 1000-2000 ppm | Use in high-risk areas such as toilets,trash cans,and surfaces in patient rooms.The effect lasts 15-30 minutes. |
| Industrial circulating water sterilization and algae removal | Set according to system conditions | Control microbial and algae growth by continuously dosing powder or tablets through an automatic dosing pump. |
| Animal Husbandry/Aquatic disinfection | Depends on the specifc purpose | It can be used for water disinfection(low concentration)or pond cleaning(high concentration),and must strictly follow the guidance of aquatic experts. |
Concentration calculation formula (estimate):
Required SDIC mass (g) ≈ [Target concentration (ppm) × Water volume (L)] / (1000 × Available chlorine content%)
Example: To prepare 50 liters of a 1000 ppm stock solution, assume the SDIC has an available chlorine content of 56%.
Required SDIC mass ≈ (1000 × 50) / (1000 × 0.56) ≈ 89.3 g
Dissolving 89 g of SDIC powder in 50 liters of water yields a stock solution of approximately 1000 ppm.
Advantages
SDIC has become a widely used disinfectant worldwide due to its unparalleled advantages:
1. Highly effective and broad-spectrum bactericidal properties
2. Excellent stability and long shelf life
Stable solid form: Compared to liquid chlorine-containing disinfectants (such as sodium hypochlorite), SDIC is extremely stable in solid form, and its effective chlorine decays very slowly.
3. Excellent safety and ease of use
Good water solubility and clear solutions: SDIC dissolves quickly and completely in water, resulting in relatively clear solutions with minimal residue and sediment, eliminating the risk of clogging spray equipment.
Storage Method
| Aspect | Best Practices | Things to avoid |
| Environment | Cool,dry and ventilated place | High temperature,high humidity,and direct sunlight |
| Package | Original sealed packaging,sealed immediately after taking out | Store inopen storage,use damaged packaging |
| lsolation | Separate area storage | Mixed with acids,reducing agents,and flammable materials |
| Shelf life | Under idea conditions,it can be24 months | In severe conditions this may be shortened to several months |
FAQ
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Q1: Why is the water cloudy after dissolving SDIC?
A: This is normal. The turbidity is primarily due to the fillers and trace insoluble matter in SDIC. These will float or settle after standing. The supernatant is the effective disinfectant and can be used normally. -
Q2: Is SDIC solution corrosive to metals?
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Q3: How should unused SDIC be stored?
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Q4: How should leaked or spilled SDIC be handled?