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Product Name: 2-Ethylpyridine
Chemical Formula: C7H9N
CAS Number: 612-11-9
Synonyms: 2-Ethylpyridine, α-Ethylpyridine
Recommended Use: Used in chemical synthesis, laboratory research, and as an intermediate in pharmaceuticals and agrochemicals
Manufacturer Contact: Refer to product label for supplier address, phone, and emergency contact information
GHS Classification: Acute toxicity (oral, dermal, inhalation) - Category 4; Skin irritation - Category 2; Eye irritation - Category 2A; Flammable liquids - Category 3
Signal Word: Warning
Hazard Statements: Harmful if swallowed, inhaled, or in contact with skin. Causes skin and serious eye irritation. Flammable liquid and vapor.
Precautionary Statements: Keep away from heat, sparks, open flames. Use explosion-proof equipment. Avoid breathing vapors. Wear protective gloves, clothing, eye protection. Wash skin after handling. Store in a well-ventilated area, keep container tightly closed. Wash contaminated skin thoroughly after handling. If in eyes, rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do so.
Chemical Name: 2-Ethylpyridine
Concentration: >99% by weight
CAS Number: 612-11-9
Impurities: Trace pyridine derivatives (less than 1%), not considered hazardous at specified concentrations
Inhalation: Move affected person to fresh air. If breathing is difficult, supply oxygen. Get medical attention if symptoms persist.
Skin Contact: Remove contaminated clothing. Wash skin thoroughly with soap and water. Get medical attention if irritation develops.
Eye Contact: Rinse eyes cautiously with water for at least 15 minutes, lifting eyelids occasionally. Seek medical help immediately if irritation continues.
Ingestion: Rinse mouth. Do not induce vomiting unless advised by medical personnel. Call physician or poison control center immediately.
Most Important Symptoms: Burning sensation, coughing, shortness of breath, skin redness, eye watering.
Suitable Extinguishing Media: Dry chemical, carbon dioxide, foam. Use water spray to cool containers.
Specific Hazards: Vapors can form explosive mixtures with air. Thermal decomposition produces irritating and toxic fumes including nitrogen oxides and carbon oxides.
Special Protective Equipment: Firefighters should wear self-contained breathing apparatus and full protective clothing.
Fire Fighting Instructions: Move containers from fire area if safe. Avoid inhalation of vapor or combustion products.
Personal Precautions: Evacuate area. Remove sources of ignition. Wear protective equipment, including gloves, goggles, and a respirator if necessary.
Environmental Precautions: Prevent entry into drains, surface water, or soil. Alert local authorities if spillage contaminates environment.
Containment Methods: Absorb with inert material (sand, earth, vermiculite). Collect residue into suitable, tightly closed containers.
Cleanup Methods: Clean spill area thoroughly with water after material removal. Dispose of contaminated absorbent as hazardous waste.
Handling: Use only in well-ventilated areas. Avoid inhalation, ingestion, and contact with skin and eyes. Use appropriate personal protective equipment. Ground and bond containers during transferring. Prohibit smoking in area.
Storage: Store in tightly closed containers in a cool, dry, well-ventilated area. Keep away from sources of ignition, incompatible materials (strong oxidizers, acids). Store separate from food and beverages. Label containers clearly.
Occupational Exposure Limits: No specific regulatory limits established in most jurisdictions. Limit exposure to lowest feasible level.
Engineering Controls: Use local exhaust ventilation and other engineering controls to maintain airborne levels below recommended exposure limits.
Personal Protection: Chemical-resistant gloves, safety goggles, and protective clothing required. Use NIOSH-approved respirator in high vapor or mist conditions.
Hygiene Measures: Wash thoroughly after handling. Remove and wash contaminated clothing before reuse.
Appearance: Clear, colorless to pale yellow liquid
Odor: Strong, characteristic pyridine-like odor
Odor Threshold: Not established
pH: Not applicable (neutral compound)
Melting Point: -65°C
Boiling Point: 154-156°C
Flash Point: 39°C (closed cup)
Evaporation Rate: Not measured
Flammability: Flammable liquid
Vapor Pressure: 4 mmHg @ 25°C
Vapor Density: 3.5 (air = 1)
Relative Density: 0.97 g/cm³ @ 20°C
Solubility: Miscible with water, alcohol, ether, chloroform
Partition Coefficient: log Kow = 1.80
Autoignition Temperature: 440°C
Decomposition Temperature: Not specified
Viscosity: Not specified
Chemical Stability: Stable under normal storage and handling conditions.
Possible Hazardous Reactions: Reacts strongly with oxidizers and acids, may generate heat and toxic fumes.
Conditions to Avoid: Heat, open flame, ignition sources, strong oxidizing agents, acids.
Incompatible Materials: Strong oxidizers (peroxides, permanganates), acids, alkali metals.
Hazardous Decomposition Products: Nitrogen oxides, carbon monoxide, carbon dioxide, toxic organic vapors.
Acute Toxicity: Oral (rat) LD50: 500-600 mg/kg; Inhalation (rat) LC50: 1200 ppm/4h; Dermal LD50: not adequately tested but may irritate skin significantly.
Skin Corrosion/Irritation: Causes moderate skin irritation, redness, burning.
Eye Damage/Irritation: May cause significant irritation, redness, watering, blurred vision.
Respiratory Sensitization: Not classified, but high vapor levels can irritate respiratory system.
Carcinogenicity: Not listed by IARC, NTP, OSHA as carcinogen. Long-term exposure effects have not been thoroughly assessed.
Mutagenicity/Reproductive Toxicity: No adequate data in animals or humans.
Routes of Exposure: Inhalation, ingestion, dermal absorption, eye contact.
Symptoms: Cough, shortness of breath, dizziness, headache, nausea, skin and eye irritation.
Ecotoxicity: Toxic to aquatic organisms. LC50 (fish, 96h): 25 mg/L.
Persistence and Degradability: Expected to degrade relatively quickly in air and water, but can persist in the environment if released in large quantities.
Bioaccumulative Potential: Low based on log Kow.
Mobility in Soil: Highly mobile due to water solubility; can leach through soil to groundwater.
Other Effects: Large releases may alter pH and affect aquatic life. Not expected to produce long-term environmental damage if properly managed.
Waste Treatment Methods: Incinerate in a chemical incinerator equipped with afterburner and scrubber in accordance with local, regional, and national regulations.
Product Disposal: Dispose of unused material as hazardous waste. Check with local hazardous waste authorities for guidance.
Container Disposal: Triple rinse empty containers, then puncture and send to reconditioner or approved landfill. Do not reuse containers.
UN Number: UN1992
UN Proper Shipping Name: Flammable Liquid, Toxic, N.O.S. (2-Ethylpyridine)
Transport Hazard Class: 3 (Flammable liquid), 6.1 (Toxic substance)
Packing Group: III
Environmental Hazards: Marine pollutant (if transported in bulk)
Special Precautions: Follow regulations for hazardous chemicals. Mark and label containers appropriately with required hazard warnings.
OSHA Hazard Communication: Regulated as potentially hazardous chemical
SARA Title III, Sections 302/304/311/312: List as hazardous by acute health, fire, and reactivity hazards
TSCA Status: Listed on TSCA Inventory
EU Classification: Xn (Harmful), R10 (Flammable), R20/21/22 (Harmful by inhalation, in contact with skin, and if swallowed)
Other Regulations: Comply with local, national, and international chemical safety guidelines, including proper labeling and workplace safety training.
