Material Safety Data Sheet for Sodium Cyanurate

Identification

Product Name: Sodium Cyanurate
Synonyms: Sodium isocyanurate, Sodium salt of cyanuric acid
Chemical Formula: C3H2N3NaO3
CAS Number: 2626-45-7
Recommended Use: Water treatment, swimming pool chlorine stabilizer
Supplier Information: List of major suppliers includes various chemical manufacturers and distributors operating globally. Contact numbers, addresses, and email for emergencies provided by the supplier on official paperwork.
Emergency Contact: National Poison Control Center (where available), or local emergency services provided in each safety document.

Hazard Identification

Hazard Classification: Not classified as hazardous under GHS for most uses, but can pose health and environmental risks.
Label Elements: No pictogram required for general use; warnings may include for dust inhalation.
Hazard Statements: May cause respiratory irritation, eye irritation. Possible skin sensitizer if contact persists.
Precautionary Statements: Wash hands after handling, avoid inhalation, wear suitable PPE when handling bulk material.
Main Routes of Exposure: Inhalation, skin contact, eye contact, ingestion.
Potential Health Effects: Short-term exposure to dust can irritate respiratory system, eyes, and skin. Swallowing large amounts might affect health, especially in children or pets.
Environmental Hazards: Shows persistence in aquatic environments because of its chemical stability; high concentrations can impact some aquatic organisms.

Composition / Information on Ingredients

Chemical Name: Sodium Cyanurate
CAS Number: 2626-45-7
Concentration: 99-100% (commercial grade)
Impurities: Minor amounts of sodium chloride, sodium carbonate, moisture potentially present depending on manufacturing
Other Ingredients: Not relevant as product is usually in pure form; no major additives common.
Molecular Weight: 161.06 g/mol

First Aid Measures

Inhalation: Move person to fresh air. If breathing becomes difficult, give oxygen and seek medical attention.
Skin Contact: Wash with soap and water; remove contaminated clothing. Seek medical advice if irritation persists.
Eye Contact: Rinse immediately with plenty of water, keeping eyelids apart for several minutes—remove contacts if present and easy to do. Medical help recommended if irritation continues.
Ingestion: Rinse mouth thoroughly, avoid inducing vomiting unless instructed by poison center or doctor. Give water. Seek medical help.
Most Important Symptoms: Eye and skin irritation, respiratory discomfort, upset stomach if swallowed.
Immediate Medical Attention: Doctor should monitor airway and symptomatic treatment according to exposure.

Fire-Fighting Measures

Suitable Extinguishing Media: Water spray, dry chemical, foam, or carbon dioxide.
Unsuitable Extinguishing Media: Do not use water jet as it may spread dust.
Fire Hazards: Product does not readily burn. In case of fire involving bulk storage, decomposition products like nitrogen oxides, cyanuric compounds may form.
Protective Equipment: Self-contained breathing apparatus, full protective clothing recommended in restricted areas.
Special Procedures: Keep unnecessary personnel away; cool containers exposed to fire with water spray.
Combustion Products: Nitrogen oxides, irritating and toxic fumes possible.

Accidental Release Measures

Personal Precautions: Wear dust mask, protective goggles, and gloves. Avoid generating dust.
Environmental Precautions: Prevent entry into waterways, sewers, and soil.
Spill Containment: Collect spilled material with appropriate tools (shovel or vacuum); use antistatic equipment.
Clean Up: Place residue in labeled, sealable containers for recovery or disposal. Flush area with water after material removal, avoiding creating run-off.
Other Considerations: Dispose of through approved chemical disposal according to local regulations.

Handling and Storage

Safe Handling Practices: Avoid contact with skin and eyes, avoid breathing dust. Only handle in areas with adequate ventilation.
Storage Conditions: Store in tightly closed, labeled containers in cool, dry, well-ventilated place.
Incompatible Materials: Acids, oxidizers, strong reducing agents.
Special Sensitivities: Absorbs moisture from air so keep container tightly sealed.
Storage Life: Properly stored, shelf life extends beyond several years.

Exposure Controls and Personal Protection

Exposure Limits: Not specifically listed in ACGIH, OSHA, or NIOSH for sodium cyanurate.
Engineering Controls: Good general ventilation; use local exhaust at points of dust generation.
Personal Protection: Protective gloves, tight-fitting safety goggles, protective clothing.
Respiratory Protection: Dust mask or NIOSH-approved respirator in poorly ventilated areas.
Hygiene Measures: Wash hands thoroughly after handling. Remove contaminated clothing before eating or drinking.
Other Controls: Eyewash station and safety shower suggested in work area.

Physical and Chemical Properties

Appearance: White crystalline powder or granules
Odor: Odorless
pH: 6.0-7.5 (1% solution)
Melting Point: > 300°C (decomposes)
Boiling Point: Not applicable (decomposes before boiling)
Solubility in Water: Moderate (approx. 20 g/L at 25°C)
Specific Gravity: 1.8-2.0
Vapor Pressure: Not applicable
Flash Point: Not applicable
Partition Coefficient (log Pow): Not determined

Stability and Reactivity

Chemical Stability: Remains stable under normal conditions and recommended storage settings.
Conditions to Avoid: Extreme moisture, excessive heat, open flames
Materials to Avoid: Acids, strong oxidizing substances, reducing agents
Hazardous Decomposition Products: Nitrogen oxides, possibly cyanuric acid, traces of toxic gases under fire.
Polymerization: Does not polymerize spontaneously.
Special Properties: May absorb water from air, leading to caking or clumping if not sealed.

Toxicological Information

Acute Toxicity: Oral LD50 (rat) > 2000 mg/kg (low toxicity range).
Skin Corrosion/Irritation: May cause mild irritation after prolonged or repeated contact.
Serious Eye Damage/Irritation: Dust can irritate eyes—reddening, watering, or discomfort.
Respiratory Sensitization: May cause allergic-type response in sensitive individuals on repeated exposure.
Germ Cell Mutagenicity: Not known to be mutagenic.
Carcinogenicity: Not listed as carcinogen by IARC, NTP, OSHA.
Reproductive Toxicity: No definitive data suggesting reproductive risk.
Chronic Effects: No cumulative toxic effect in normal handling; repeated exposure to airborne dust not advised.

Ecological Information

Aquatic Toxicity: Fish and invertebrate toxicity low under common concentrations.
Persistence and Degradability: Tends not to break down rapidly—may persist in soil and water environments.
Bioaccumulative Potential: Expected to have low bioaccumulation due to low solubility and mobility.
Mobility in Soil: Moderately mobile in moist soils, but not volatile.
Other Adverse Effects: High concentrations in confined water bodies could reduce water quality due to accumulation.
Disposal Impact: Spilled or disposed material may contaminate water if released irresponsibly.

Disposal Considerations

Disposal Methods: Collect and dispose of according to local regulations in approved landfill or chemical waste facility.
Unusable Product or Packaging: Rinse containers before disposal or recycling where facilities exist.
Contaminated Packaging: Dispose as chemical waste after thorough cleaning.
Precautions: Do not dump in sewers, streams, or unapproved dumpsites.
Special Handling: Authorized waste contractor should handle bulk disposal.
Reuse/Recycling: Material itself not typically recycled; recycle empty containers if feasible.

Transport Information

UN Number: Not regulated as hazardous for transport.
Proper Shipping Name: Sodium Cyanurate
Hazard Class: None assigned.
Packing Group: Not applicable.
Marine Pollutant: Not listed as marine pollutant.
Special Transport Precautions: Transport in dry, sealed packaging; stack to prevent container damage.

Regulatory Information

Regulatory Status: Not specifically regulated as a hazardous material in US, EU, Canada.
Inventory Listings: Listed in TSCA (US), EINECS/ELINCS (EU), DSL/NDSL (Canada).
Workplace Regulations: Comply with OSHA, WHMIS, or relevant local authority guidelines.
Labeling Requirements: Standard industrial labeling for chemical products applies, including hazard warnings.
Other Rules: Follow local, state, national guidelines for storage, handling, and disposal. Product may be subject to local notification requirements due to possible cumulative environmental effects.