Sodium Dichloroisocyanurate (SDIC), also known as Sodium Dichloro-s-triazinetrione, is a widely used chlorine-based disinfectant and water-treatment chemical. It is valued for its high available chlorine content, good water solubility, and effectiveness against a broad range of microorganisms.

Sodium Dichloroisocyanurate (SDIC) – Product Overview

Sodium Dichloroisocyanurate is commonly available in granular, powder, and tablet forms. It releases active chlorine when dissolved in water, making it suitable for disinfection and microbial control in swimming pools, industrial water systems, wastewater treatment, sanitation, and other applications.

Key Properties

• Chemical name: Sodium Dichloroisocyanurate

• Abbreviation: SDIC

• CAS No.: 2893-78-9

• Appearance: White crystalline powder, granules, or tablets

• Available chlorine: Commonly around 56–62%, depending on grade and formulation

• Highly effective chlorine-based disinfectant

• Good water solubility

• Suitable for a wide range of water-treatment applications

Major Applications

1. Swimming Pool Water Treatment
SDIC is widely used for maintaining microbiological control in swimming pools, spas, and recreational water systems.

2. Drinking Water & General Water Disinfection
Appropriately specified SDIC grades can be used for water disinfection where permitted by applicable regulations and treatment standards.

3. Industrial Water Treatment
It is used for controlling microorganisms, algae, and biofilm in selected industrial water systems.

4. Wastewater Treatment
SDIC can be used as a chlorine-based disinfectant in wastewater treatment processes to reduce microbial contamination.

5. Marine & Shipboard Applications
SDIC is used in selected marine sanitation and water-treatment applications, subject to the vessel's treatment system and operating requirements.

6. Institutional & Surface Disinfection
Suitable formulations are used for sanitation and disinfection of hard surfaces, equipment, and facilities.

SDIC 56% vs. SDIC 60%+

The available chlorine content of SDIC depends on the specific grade and formulation. SDIC 56% is a commonly traded industrial grade, while higher available-chlorine grades may also be available.

When purchasing SDIC, buyers should verify:

• Available chlorine specification

• Purity

• Granular, powder, or tablet form

• Particle size

• Packaging

• COA and SDS

• Intended application and regulatory requirements

Storage & Handling

Sodium Dichloroisocyanurate is an oxidizing chemical and should be stored in a cool, dry, well-ventilated area away from incompatible materials, moisture, heat, and sources of contamination. Do not mix it directly with acids, ammonia, reducing agents, or other incompatible chemicals because hazardous reactions or toxic gases may result.

Always follow the manufacturer's SDS and handling instructions.

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