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Product Name: 3-Ethylpyridine
Chemical Formula: C7H9N
Synonyms: 3-Ethyl-pyridine, β-Ethylpyridine
CAS Number: 536-78-7
Recommended Use: Laboratory chemicals, manufacturing of pharmaceuticals, chemical intermediate
Manufacturer: Chemical supplier or relevant laboratory
Emergency Phone Number: Provided on company label; refer to local poison control center or emergency responder
Address: Refer to supplier documentation for physical address
GHS Classification: Flammable Liquids (Category 3), Acute Toxicity – Oral (Category 3), Skin Irritation (Category 2), Serious Eye Irritation (Category 2A)
Signal Word: Danger
Hazard Statements: Highly flammable liquid and vapor; Harmful if swallowed; Causes skin irritation; Causes serious eye irritation
Pictograms: Flame, Exclamation Mark
Precautionary Statements: Keep away from heat, sparks, open flames. Avoid breathing mist or vapors. Wear protective clothing, gloves, and eye protection. Handle in a well-ventilated area.
Chemical Name: 3-Ethylpyridine
Concentration: 98-100%
CAS Number: 536-78-7
Impurities/Additives: May contain trace impurities (usually below 1%) arising from the synthesis process, specific breakdown or contamination
Inhalation: Move the exposed person to fresh air. Perform artificial respiration if breathing stops. Seek medical attention immediately.
Skin Contact: Remove contaminated clothing. Rinse affected skin immediately with copious amounts of water for at least 15 minutes. Seek medical help if symptoms persist.
Eye Contact: Rinse eyes with plenty of water for at least 15 minutes; lift eyelids occasionally. Avoid rubbing eyes. Get medical attention without delay.
Ingestion: Rinse mouth with water. Do not induce vomiting. Never give anything by mouth to an unconscious person. Get immediate medical assistance.
Suitable Extinguishing Media: Carbon dioxide, dry chemical powder, alcohol-resistant foam. Use water spray to cool surrounding containers.
Hazardous Combustion Products: Nitrogen oxides, carbon monoxide, carbon dioxide, other toxic fumes.
Protective Equipment for Firefighters: Firefighters require full protective gear and self-contained breathing apparatus in case of major fire. Avoid inhaling vapors or gases resulting from combustion.
Special Remarks: Vapors can travel to a source of ignition and flash back. Most fire-fighting scenarios with flammable liquids require immediate evacuation of the area.
Personal Precautions: Evacuate non-essential personnel. Avoid contact with skin, eyes, or clothing. Remove sources of ignition. Use adequate ventilation.
Environmental Precautions: Prevent further leakage or spillage if safe to do so. Do not allow material to enter drains or watercourses.
Cleanup Methods: Absorb spill with inert material (e.g., dry sand or earth), then place the material in a chemically-approved container. Use spark-proof tools and explosion-proof equipment. Dispose according to local, state, and federal regulations.
Safe Handling: Use only in well-ventilated areas. Keep containers tightly closed. Do not breathe vapors, mist, or spray. Only use non-sparking tools. Ground and bond container and receiving equipment.
Storage Conditions: Store in a tightly closed container. Keep the substance away from sources of ignition, incompatible substances, heat, and direct sunlight. Store in a cool, dry, and well-ventilated location.
Incompatible Materials: Strong oxidizing agents, strong acids, strong bases.
Engineering Controls: Use explosion-proof ventilation systems, local exhaust, or other engineering controls to keep airborne levels below the recommended exposure limits.
Respiratory Protection: Use a properly fitted air-purifying or supplied-air respirator if exposure exceeds occupational exposure limits.
Skin Protection: Wear chemical-resistant gloves, lab coats, long-sleeved shirts, and long pants.
Eye Protection: Chemical safety goggles or face shield.
Other Protective Equipment: Emergency eyewash fountains and safety showers should be available near the workplace.
Appearance: Colorless to pale yellow liquid
Odor: Strong, pungent, characteristic pyridine-like odor
Odor Threshold: Not available
pH: Not applicable (pure liquid)
Melting Point: -57°C
Boiling Point: 144-146°C
Flash Point: 33°C (closed cup)
Evaporation Rate: Not determined
Vapor Pressure: 4 mmHg at 25°C
Vapor Density: 3.7 (air = 1)
Relative Density: 0.96 g/cm³
Solubility: Miscible with water, alcohol, ether
Partition Coefficient (log Kow): 1.8
Auto-ignition Temperature: 410°C
Decomposition Temperature: Not determined
Viscosity: Not available
Chemical Stability: Stable under normal storage and handling conditions.
Reactivity: Can react dangerously with strong oxidizing agents.
Hazardous Reactions: May form toxic fumes under fire conditions.
Conditions to Avoid: Heat, flames, sparks, and all other sources of ignition.
Incompatible Materials: Oxidizing agents, strong acids, strong bases.
Hazardous Decomposition Products: Nitrogen oxides, carbon monoxide, carbon dioxide.
Routes of Exposure: Inhalation, ingestion, skin contact, eye contact
Acute Toxicity: Toxic if swallowed or inhaled. Calculated oral LD50 (rat): 220 mg/kg. Skin and eye irritation has been reported.
Skin Corrosion/Irritation: Causes redness and pain.
Serious Eye Damage/Irritation: Causes eye irritation including redness, watering, and possible injury.
Respiratory or Skin Sensitization: Not classified as a sensitizer.
Germ Cell Mutagenicity: Not enough data; treat with caution.
Carcinogenicity: Not classified as a known human carcinogen.
Reproductive Toxicity: Information limited; avoid unnecessary exposure.
Specific Target Organ Toxicity (Single Exposure): May affect the central nervous system.
Specific Target Organ Toxicity (Repeated Exposure): Data are scarce; minimize repeated or prolonged inhalation or skin exposure.
Ecotoxicity: Toxic to aquatic organisms; risk of long-term adverse effects in aquatic environments. LC50 (Fish, 96h): 45 mg/L (estimated).
Persistence and Degradability: May not degrade quickly in the environment; volatile and mobile in soil.
Bioaccumulative Potential: Moderate potential; log Kow about 1.8 suggests uptake by aquatic species.
Mobility in Soil: May transfer to groundwater.
Other Adverse Effects: Avoid uncontrolled releases into the environment. Environmental hazard increases with large or repeated spills.
Waste Disposal: Collect and store in labeled, safe containers. Dispose through a licensed chemical waste disposal contractor.
Contaminated Packaging: Containers must be triple-rinsed and disposed according to local regulations.
Special Instructions: Don’t flush down the drain. Burn in a chemical incinerator equipped with afterburner and scrubber if permitted by law.
UN Number: UN1992
Proper Shipping Name: Flammable liquids, toxic, n.o.s. (3-Ethylpyridine)
Transport Hazard Class: 3 (Flammable liquid)
Packing Group: II
Environmental Hazards: Substance poses an environmental risk, especially near water sources.
Special Precautions for User: Keep away from heat, sparks, and open flame during transfer or transport. Use chemical-resistant containers during transit.
TSCA Status: Listed on the Toxic Substances Control Act (TSCA) inventory.
EINECS Number: 208-632-0
OSHA Hazards: Flammable liquid, toxic by ingestion and inhalation, irritant
WHMIS Classification: Class B2 (Flammable Liquid), Class D1B (Toxic Material), Class D2B (Other Toxic Effects)
SARA Title III Sections 302/313: Not specifically listed but review local reporting requirements.
Other International Inventories: Listed in Australian, Japanese, and Korean inventories.
Labeling Requirements: Comply with OSHA Hazard Communication Standard and GHS labeling standards.
