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Product Name: Nitrilotriacetic Acid
Synonyms: NTA, Tricarboxymethylamine
Chemical Formula: C6H9NO6
CAS Number: 139-13-9
Recommended Use: Chelating agent for water treatment, textile processing, detergents
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UN Number: Not classified for transport in this form
GHS Classification: Acute Toxicity, Category 4 (oral), Eye Damage, Category 2A, Skin Irritant, Category 2
Pictograms: Exclamation mark
Signal Word: Warning
Hazard Statements: Harmful if swallowed, causes serious eye irritation, may cause skin irritation
Precautionary Statements: Wear protective gloves, wash hands thoroughly after handling, avoid contact with eyes and skin
Potential Health Effects: Inhalation can irritate respiratory system, exposure to eyes may result in redness or pain, ingestion can upset stomach
Environmental Hazards: Harmful to aquatic life, avoid release to waterways
Route of Entry: Eye, skin, ingestion, inhalation
Chemical Name: Nitrilotriacetic Acid
Common Name: NTA
CAS Number: 139-13-9
Concentration: 99-100% (pure product form)
Impurities: May include traces of sodium salts, unidentified minor contaminants from manufacturing
Eye Contact: Immediately flush eyes with plenty of water for at least 15 minutes, lift eyelids to ensure thorough irrigation, seek medical attention if irritation continues
Skin Contact: Wash with soap and plenty of water, remove contaminated clothing and shoes, seek medical help for persistent irritation
Inhalation: Move victim to fresh air, if breathing is difficult, administer oxygen, seek immediate medical attention if symptoms persist
Ingestion: Rinse mouth thoroughly, drink water to dilute, do not induce vomiting, get medical attention promptly
Self-Protection of First Aiders: Wear gloves and goggles to prevent self-exposure during assistance
Most Important Symptoms/Effects: Eye redness, tearing, sore throat, abdominal discomfort if swallowed
Suitable Extinguishing Media: Foam, dry powder, carbon dioxide, water spray
Unsuitable Media: Do not use high pressure water jet that might spread material
Hazardous Combustion Products: Carbon oxides, nitrogen oxides, smoke
Special Protective Equipment for Firefighters: Use self-contained breathing apparatus, protective clothing
Fire Hazards: Product itself is not highly flammable, decomposition at high temperature generates hazardous gases
Specific Hazards: Containers may burst if heated
Advice for Firefighters: Stay upwind, avoid smoke inhalation, cool adjacent containers with water
Personal Precautions: Evacuate area, keep unnecessary personnel away, use protective gear—gloves, goggles, mask
Environmental Precautions: Prevent spills from entering drains, sewers, or natural waterways
Methods for Containment: Scoop up using non-sparking tools, clean spill area with detergent and water
Methods for Cleaning Up: Collect in containers for disposal, ventilate area, wash residues with water
Reference to Other Sections: See section on exposure controls for personal protection details
Notification Procedures: Report release to local environmental authorities if required
Precautions for Safe Handling: Handle in well-ventilated space, avoid contact with skin, eyes, and clothing, do not breathe dust, wash hands after handling
Technical Measures: Use adequate local exhaust ventilation, keep containers tightly closed
Safe Storage Conditions: Store in a cool, dry area, keep drum or bag tightly sealed, avoid direct sunlight and sources of heat
Incompatible Materials: Strong oxidizing agents, acids, bases
Storage Class: Chemical storage designated for corrosives
Packaging Materials: Use corrosion-resistant containers
Control Parameters: No occupational exposure limits established, handle as nuisance dust
Engineering Controls: Ventilation systems, eyewash stations in work area, keep airborne levels as low as possible
Personal Protective Equipment: Safety glasses or goggles, chemical-resistant gloves, protective clothing, dust mask or NIOSH-approved respirator if dust levels exceed limits
Hygiene Measures: Remove and wash contaminated clothing, do not eat or drink where material is handled
Thermal Hazards: Product does not require special thermal protective equipment
Appearance: White crystalline powder
Odor: Odorless
Odor Threshold: Not applicable
pH (1% solution): 2.0 - 3.0
Melting Point: 247–252°C (with decomposition)
Boiling Point: Decomposes before boiling
Flash Point: Not applicable
Evaporation Rate: Not applicable
Flammability: Not flammable
Vapor Pressure: Not significant at room temperature
Vapor Density: Not applicable
Solubility: Soluble in water, slightly soluble in alcohol
Partition Coefficient (n-octanol/water): Not determined
Auto-ignition Temperature: Not applicable
Decomposition Temperature: Above 247°C
Viscosity: Not applicable
Bulk Density: 700-900 kg/m³
Chemical Stability: Product remains stable under ordinary conditions
Reactivity: No dangerous reactions identified under recommended handling and storage
Possibility of Hazardous Reactions: Direct contact with strong oxidizers causes rapid reaction
Conditions to Avoid: Excess heat, open flame, prolonged moisture exposure
Incompatible Materials: Strong acids, bases, and oxidizers
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, nitrogen oxides
Polymerization: Not expected under normal handling
Acute Toxicity: LD50 (oral, rat): approximately 1740 mg/kg
Skin Corrosion/Irritation: May cause mild skin irritation
Serious Eye Damage/Irritation: Causes moderate to severe eye irritation
Respiratory or Skin Sensitization: Not expected to cause sensitization
Mutagenicity: Limited evidence of mutagenic activity
Carcinogenicity: IARC classifies trisodium salt of NTA as possibly carcinogenic to humans (Group 2B); NTA acid form less studied
Reproductive Toxicity: No human data available
Specific Target Organ Toxicity (STOT): No evidence of target organ effects in short-term exposure
Aspiration Hazard: Not applicable by typical routes
Other Symptoms: Nausea, vomiting, diarrhea, respiratory irritation in case of inhalation exposure
Ecotoxicity: Harmful to aquatic organisms at higher concentrations
Persistence and Degradability: Moderately biodegradable under aerobic conditions, slower in anaerobic conditions
Bioaccumulative Potential: Not expected to bioaccumulate significantly
Mobility in Soil: High mobility due to high water solubility
Results of PBT/vPvB Assessment: Substance not classified as persistent, bioaccumulative, or toxic
Other Adverse Effects: Can chelate essential minerals in soil and water, affecting local ecosystems
Waste Treatment Methods: Dispose of material in accordance with local, regional, and national regulations
Product Disposal: Do not dispose of into environment or drains, incineration or landfill site authorized for chemicals
Contaminated Packaging: Rinse containers thoroughly before recycling or disposal
Special Precautions: Wear protective equipment during disposal, consult waste disposal authority for guidance
Disposal Code: Classified as non-hazardous waste in some jurisdictions; always check local requirements
UN Number: Not regulated (not considered dangerous goods under ADR, IMDG, IATA)
Proper Shipping Name: Nitrilotriacetic Acid
Transport Hazard Class: Not classified
Packing Group: Not assigned
Environmental Hazards: Not a marine pollutant
Special Precautions: Protect container from mechanical shock and water, label clearly for safety
Transport Documentation: Ensure documentation reflects non-hazardous status as per local and international standards
US TSCA Status: Listed on Toxic Substances Control Act (TSCA) Inventory
EU REACH Status: Registered under EC No. 205-355-7
Hazard Labeling: Complies with OSHA Hazard Communication Standard and EU CLP Regulation
SARA Title III Sections 302/313: Not subject to reporting
California Prop 65: Trisodium salt form listed as cancer hazard
Canadian DSL/NDSL: Listed
Other Regions: Subject to chemical notification as required by individual regions
Workplace Regulations: Follow applicable workplace safety laws and guidance
