Sodium Dichloroisocyanurate Extra Pure

1. Basic Identification Attributes

• Chemical Name: Sodium Dichloroisocyanurate
  • CAS Number: 2893-78-9
  • HS Code: 2933.69.90
  • Molecular Formula: C₃Cl₂N₃NaO₃
  • Synonyms:

• SDIC
• Sodium troclosene
• Dichloro-s-triazinetrione sodium salt
• Sodium dichloroisocyanuric acid

2. Physical & Chemical Properties

• Physical State: Solid (available as powder, granules, or tablets)
  • Color & Odor: White to off-white, faint chlorine-like odor
  • Melting Point: Decomposes before melting
  • Density/Specific Gravity: ~1.0–1.2 g/cm³
  • Solubility:
• Soluble in water (~25 g/100 mL at 25 °C)
• Forms a slightly alkaline aqueous solution
  • pH Level: 6.0 to 7.5 (1% solution)
  • Vapor Pressure & Volatility: Not volatile
  • Flash Point: Not flammable
  • Autoignition Temperature: Not applicable
  • Available Chlorine Content: 55–60%
  • Stability in Solution: Moderately stable; decomposes in strong sunlight or heat

3. Safety & Hazard Attributes

Hazard Class (GHS Classification):

• Acute toxicity – oral (Category 4)
• Skin irritation (Category 2)
• Eye irritation (Category 2A)
• Aquatic toxicity – acute and chronic (Category 1)
  • NFPA Ratings:
• Health: 2
• Flammability: 0
• Reactivity: 1
  • Exposure Limits:
• No OSHA PEL or ACGIH TLV established
• Handle with caution to avoid respiratory or dermal exposure
  • Reactivity:
• Releases toxic chlorine gas when mixed with acids
• Reacts dangerously with ammonia, reducing agents, and organic materials

4. Storage & Handling Attributes

Storage Conditions:

• Store in original, tightly sealed containers in a dry, cool, and well-ventilated area
• Protect from direct sunlight and moisture
• Keep away from combustible or incompatible materials
  • Incompatible Materials:
• Acids (generate chlorine gas)
• Ammonia compounds
• Reducing agents
• Organic materials
  • Container Type:
• HDPE containers, lined fiber drums, moisture-resistant pouches
  • Shelf Life & Expiration Date:
• Stable for 3–5 years under proper conditions
• Degrades slowly when exposed to humidity and heat
  • Special Handling Requirements:
• Avoid creating dust
• Do not store near food, beverages, or feed
• Use with adequate ventilation or fume extraction

5. Regulatory & Compliance Attributes

Regulatory Status:

• Approved for potable water treatment by WHO and U.S. EPA
• Registered as a disinfectant and antimicrobial agent under various national guidelines
• Subject to labeling and storage regulations under transport and chemical safety standards
  • Transportation Restrictions:
• Not classified as a hazardous material in most forms, but regulated for bulk transport
• UN Number (if applicable): 2465
  • Waste Disposal Method:
• Do not dispose into sewers or water bodies
• Dispose of through licensed chemical waste handler
• Follow local hazardous waste regulations

6. Environmental & Health Impact

Ecotoxicity:

• Highly toxic to aquatic life at low concentrations
• May disrupt aquatic ecosystems if released in large quantities
  • Persistence in Environment:
• Degrades into cyanuric acid and chloride ions
• Breakdown accelerated by sunlight and heat
  • Carcinogenicity/Mutagenicity:
• Not classified as carcinogenic or mutagenic
• Repeated exposure to high concentrations may cause skin or respiratory irritation
  • Biodegradability:
• Inorganic chlorine-based compound; not biodegradable in the traditional sense
• Degradation products are generally environmentally tolerable in controlled amounts