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Material Safety Data Sheet — N-Ethyl-P-Toluidine

Identification

Product Name: N-Ethyl-P-Toluidine
Chemical Formula: C9H13N
Synonyms: 4-Ethylaminotoluene, N-Ethyl-4-methylaniline
CAS Number: 620-17-7
EC Number: 210-629-8
Recommended Use: Intermediate in chemical synthesis
Manufacturer/Supplier: Chemical supply distributors and large-scale laboratory vendors
Emergency Contact: National Poison Center or regional emergency numbers

Hazard Identification

Hazard Classification: Acute toxicity (oral, dermal, inhalation), skin irritation, serious eye damage, carcinogenicity
Signal Word: Danger
Hazard Statements: Harmful if swallowed, toxic in contact with skin, causes skin irritation, may cause respiratory irritation, suspected of causing cancer
Pictograms: Skull and crossbones, exclamation mark, health hazard
Precautionary Statements: Avoid breathing dust, wear protective gloves, wash hands thoroughly after handling, immediately call poison center when exposed, avoid release to environment
Routes of Exposure: Inhalation, ingestion, dermal contact
Target Organs: Liver, kidneys, respiratory tract

Composition / Information on Ingredients

Chemical Name: N-Ethyl-P-Toluidine
Concentration: >98% by weight
Impurities: p-Toluidine (<2%), Other amines (<1%)
Molecular Weight: 135.21 g/mol
Structural Formula: CH3C6H4NHC2H5

First Aid Measures

Inhalation: Move affected person to fresh air without unnecessary delay, keep comfortable in a position easy to breathe, seek medical attention if symptoms develop, supply oxygen if breathing becomes difficult
Skin Contact: Remove contaminated clothing, wash area thoroughly with plenty of water and mild soap, seek medical attention for persistent redness, irritation, or other symptoms, decontaminate affected areas
Eye Contact: Promptly flush eyes with copious amounts of running water for at least 15 minutes, lift eyelids to ensure thorough rinsing, remove contact lenses if present, seek medical attention immediately
Ingestion: Rinse mouth with water, do not induce vomiting, never give anything by mouth to an unconscious person, seek immediate medical attention
Most Important Symptoms: Nausea, headache, respiratory irritation, skin and eye redness, vomiting, confusion
Note to Physician: Observe for signs of methemoglobinemia, provide symptomatic treatment

Fire-Fighting Measures

Suitable Extinguishing Media: Dry chemical, carbon dioxide, foam, alcohol-resistant foam
Unsuitable Extinguishing Media: Water jet sprays can spread fires
Hazards from Combustion Products: Toxic vapors like nitrogen oxides and carbon monoxide
Special Precautions: Move container from fire zone when safe, keep containers cool with water spray, avoid inhalation of combustion products
Protective Equipment for Firefighters: Chemical-resistant suit, self-contained breathing apparatus, full face protection
Other Fire Risks: May form explosive mixtures with air, vapors heavier than air may travel and ignite remotely

Accidental Release Measures

Personal Precautions: Wear chemical-resistant gloves and goggles, avoid breathing vapors, remove all sources of ignition
Environmental Precautions: Prevent product from entering drains, sewers, watercourses, contain as much as possible
Methods for Clean-Up: Absorb with inert material (sand, diatomaceous earth), place into a closed, labeled container for disposal, ventilate the area, wash spill site after material pick-up
Emergency Procedures: Alert local authorities in case of large spills, evacuate uninvolved personnel, use non-sparking tools for collection

Handling and Storage

Handling: Use in well-ventilated areas, avoid skin and eye contact, avoid inhaling vapor, keep away from heat and open flame, use bonded and grounded equipment
Storage: Store in tightly sealed original containers, keep in a cool, dry, and well-ventilated area, segregate from strong oxidizers, acids, and bases, protect from sunlight and sources of ignition, label storage containers clearly
Incompatibilities: Strong oxidizing agents, acids, acid chlorides, peroxides
Other Storage Advice: Check containers regularly for leaks, keep out of reach of children and unauthorized personnel

Exposure Controls and Personal Protection

Exposure Limits: No specific Occupational Exposure Limit Value, consult local regulations or guidelines
Engineering Controls: Use chemical fume hoods, exhaust ventilation, and local capture systems
Eye/Face Protection: Safety goggles with side shields or full-face shield
Skin Protection: Nitrile or neoprene gloves, chemical-resistant clothing, lab coat
Respiratory Protection: NIOSH-approved respirators for organic vapors, especially above recommended exposure levels
Hygiene Measures: Wash hands before breaks and after handling, do not eat, drink, or smoke during use, remove and wash contaminated clothing before reuse

Physical and Chemical Properties

Appearance: Colorless to pale yellow liquid
Odor: Weak amine-like smell
Odor Threshold: Not available
pH: Not applicable (liquid form, not water-soluble)
Melting Point: -16°C
Boiling Point: 213°C
Flash Point: 92°C (closed cup)
Evaporation Rate: Not available
Flammability: Flammable liquid
Vapor Pressure: <1 mmHg at 20°C
Vapor Density: 4.6 (air=1)
Density: 0.94 g/cm³ at 20°C
Solubility in Water: Poorly soluble
Solubility in Other Solvents: Soluble in ethanol, ether, most organic solvents
Partition Coefficient n-octanol/water: Moderate (log Kow ~ 2.2)
Auto-ignition Temperature: 441°C
Decomposition Temperature: Not established
Viscosity: Not specified

Stability and Reactivity

Chemical Stability: Stable under recommended handling and storage conditions
Reactivity: Can react with strong oxidizers, may form toxic gases with strong acids
Conditions to Avoid: Direct sunlight, heat, ignition sources, open flames
Hazardous Decomposition Products: Nitrogen oxides, carbon monoxide, carbon dioxide, irritating vapors
Polymerization: Not expected to occur
Other Instabilities: Avoid static discharge

Toxicological Information

Acute Toxicity: Oral (rat) LD50: roughly 870 mg/kg, Dermal (rabbit) LD50: 1,370 mg/kg
Skin Corrosion/Irritation: Causes moderate to severe irritation
Serious Eye Damage/Irritation: Causes pain and severe redness
Respiratory Sensitization: Can cause coughing, shortness of breath with heavy exposure
Germ Cell Mutagenicity: Some evidence of genetic damage in laboratory conditions
Carcinogenicity: Possible carcinogen based on animal testing, long-term exposure requires caution
Reproductive Toxicity: Not fully established; handle with care regardless
Repeated Dose Toxicity: Chronic exposure may damage kidneys, liver, blood
Symptoms of Exposure: Headache, dizziness, methemoglobinemia, cyanosis

Ecological Information

Aquatic Toxicity: Harmful to aquatic life, toxic to fish and invertebrates
Persistence and Degradability: May not readily degrade under natural conditions
Bioaccumulation Potential: Moderate tendency to bioaccumulate in aquatic organisms
Mobility in Soil: Moderate volatility, may contaminate groundwater
Other Adverse Effects: Harmful to plant life and beneficial soil organisms if released in significant quantities
Environmental Precautions: Prevent uncontrolled releases into soil, water, and drains

Disposal Considerations

Waste Disposal Methods: Dispose of as hazardous waste in accordance with local, regional, and national regulations
Container Disposal: Triple rinse empty containers before disposal, do not reuse containers for other substances, send to approved incinerator or chemical landfill
Special Precautions: Avoid release to environment, segregate waste from incompatible chemicals
Regulatory Requirements: Seek guidance from environmental health and safety officers or waste management contractors

Transport Information

UN Number: 2810
UN Proper Shipping Name: Toxic liquid, organic, n.o.s. (N-Ethyl-P-Toluidine)
Transport Hazard Class: 6.1 (Toxic substances)
Packing Group: III
Hazard Labels: Toxic, environmentally hazardous
Special Precautions: Secure all caps, avoid violent movements during transport, keep away from foodstuffs and feed
Marine Pollutant: Yes, subject to IMDG environmental regulations
Other Transport Advice: Comply with ADR/RID (land), IMDG (sea), ICAO/IATA (air) guidance

Regulatory Information

USA: Subject to OSHA hazardous chemical requirements, SARA Title III Section 313 listed
Europe: Classified as hazardous under Regulation (EC) No 1272/2008 (CLP/GHS)
Canada: Controlled under WHMIS, listed in Domestic Substances List
Japan: Covered under the Chemical Substances Control Law
International Inventories: Listed on TSCA Inventory, EINECS, DSL, and other major inventories
Labelling Requirements: Use hazard symbols, warning language, and emergency contact information
Other Specific Legislation: Restrictions on marketing and use may apply; consult national chemical laws