Product Name: Ethylpyrrole
Chemical Family: Heterocyclic aromatic amine
Synonyms: 1-Ethylpyrrole, N-Ethylpyrrole
Molecular Formula: C6H9N
Molecular Weight: 95.14 g/mol
CAS Number: 3973-57-5
Recommended Use: Laboratory research, pharmaceutical intermediate, specialty chemicals
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Emergency Contact: (Insert local emergency contact number)
GHS Classification: Flammable liquid (Category 3), Acute toxicity – oral (Category 4), Skin irritation (Category 3), Eye irritation (Category 2B), Specific target organ toxicity – single exposure (Category 3, respiratory tract)
Signal Word: Warning
Hazard Statements: Flammable liquid and vapor; Harmful if swallowed; Causes skin irritation; Causes eye irritation; May cause respiratory irritation
Pictograms: Flame, exclamation mark
Precautionary Statements: Keep away from heat/sparks/open flames/hot surfaces. No smoking. Avoid breathing vapors. Wash thoroughly after handling. Use only outdoors or in a well-ventilated area. Wear protective gloves/eye/face protection. If on skin: wash with plenty of soap and water. If in eyes: rinse cautiously with water for several minutes.
Chemical Name: Ethylpyrrole
Concentration: >98%
CAS Number: 3973-57-5
Impurities: None identified above 1%
Additives: No additives
Other Information: Not a mixture; individual compound.
Inhalation: Move to fresh air. Seek medical attention if symptoms develop such as coughing, shortness of breath, or dizziness. Remove contaminated clothing if necessary.
Skin Contact: Wash thoroughly with soap and water for at least 15 minutes. Remove any contaminated clothing and shoes. Seek medical help if irritation occurs.
Eye Contact: Rinse immediately with plenty of water for 15 minutes, lifting upper and lower eyelids. Remove contact lenses if present and easy to do. Seek medical advice if discomfort persists.
Ingestion: Rinse mouth with water; do not induce vomiting. Seek medical attention and show the product label. Give water to dilute unless unconscious.
Symptoms: Redness, irritation, headache, respiratory discomfort, nausea.
Notes to Physician: Treat symptomatically and supportively.
Suitable Extinguishing Media: Use water spray, alcohol-resistant foam, dry chemical, or carbon dioxide.
Unsuitable Extinguishing Media: Avoid using a direct water jet.
Specific Hazards: Vapors may form explosive mixtures with air. Combustion may produce carbon monoxide, carbon dioxide, nitrogen oxides.
Special Protective Equipment and Precautions: Firefighters need standard protective gear and self-contained breathing apparatus. Keep containers cool with water spray. Remove from fire area if possible.
Explosion Data: Above flash point (around 48°C/118°F), vapor-air mixtures may ignite.
Personal Precautions: Wear chemical-resistant gloves, goggles, and suitable protective clothing. Avoid breathing vapors.
Environmental Precautions: Prevent product from entering drains, surface water, and soil.
Methods for Containment: Ventilate area. Contain spill. Absorb small spills with inert material (sand, vermiculite), scoop into clean container.
Cleanup Methods: Use non-sparking tools, collect for disposal. Wash spill area with water after material pick-up is complete.
Notification Procedures: Inform appropriate local authorities if released into the environment. Dispose of waste as required under local regulations.
Handling: Work in well-ventilated area. Avoid inhalation and ingestion. Prevent skin and eye contact. Keep container tightly closed when not in use. Ground all equipment containing the material to dissipate static charges. Use explosion-proof electrical/ventilating/lighting equipment.
Storage Conditions: Store in cool, dry, well-ventilated place away from sources of ignition, moisture, oxidizers, and direct sunlight. Keep in original, tightly sealed container. Segregate from strong acids, bases, and oxidizing agents.
Incompatible Materials: Strong oxidizers, acids, bases
Special Requirements: Use proper grounding and bonding procedures.
Occupational Exposure Limits: No established limits for Ethylpyrrole. Control to as low as reasonably achievable.
Engineering Controls: Use local exhaust ventilation, fume hood, and general area ventilation. Ensure eyewash and safety shower station within reach.
Personal Protective Equipment: Wear chemically resistant gloves (nitrile, neoprene), chemical splash goggles or face shield, lab coat, closed-toed shoes.
Respiratory Protection: Use NIOSH-approved respirator if vapor exceeds limit or during large spills.
Hygiene Measures: Wash hands, face before breaks or after handling. Remove contaminated clothing before entering eating areas.
Appearance: Clear to light yellow liquid
Odor: Aromatic, pyrrole-like
Odor Threshold: Not established
pH: Not applicable
Melting Point/Freezing Point: -56°C
Boiling Point/Boiling Range: 136-139°C
Flash Point: ~48°C (closed cup)
Evaporation Rate: Not determined
Flammability: Flammable
Upper/Lower Flammability or Explosive Limits: Not established
Vapor Pressure: 6 mmHg @ 25°C
Vapor Density: ~3.3 (air=1)
Relative Density: 0.96 g/cm³
Solubility in Water: Slight
Partition Coefficient (n-octanol/water): Not determined
Auto-ignition Temperature: Not determined
Decomposition Temperature: Not available
Viscosity: Not measured.
Chemical Stability: Stable under recommended storage conditions.
Reactivity: Forms hazardous products during combustion.
Conditions to Avoid: Heat, flames, sparks, electrostatic discharge, exposure to air or moisture.
Incompatible Materials: Strong oxidizers, acids, alkalis, halogens.
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, nitrogen oxides generated during combustion or decomposition.
Polymerization: Hazardous polymerization does not occur.
Acute Toxicity: Oral LD50 (rat): Data not available; estimates indicate moderate acute toxicity.
Skin Corrosion/Irritation: Expected to cause mild to moderate irritation.
Serious Eye Damage/Irritation: Expected to cause mild irritation.
Respiratory Sensitization: May cause respiratory irritation based on structure.
Carcinogenicity: No data on carcinogenicity; not classified by IARC, NTP, or OSHA.
Mutagenicity: Not tested; not expected based on structure.
Reproductive Toxicity: No evidence from available sources.
Target Organ Effects: Potential irritation to eyes, skin, and respiratory tract.
Other Effects: Headache, nausea, dizziness in high exposures. Prolonged or repeated contact can dry skin and may cause dermatitis.
Ecotoxicity: Not much published data; structurally similar compounds show moderate toxicity to aquatic organisms.
Persistence and Degradability: Likely biodegradable in environment, but specific rates not established.
Bioaccumulative Potential: Structurally, potential for bioaccumulation appears low.
Mobility in Soil: Tends to move in the environment if spilled.
Other Adverse Effects: Avoid release to the environment; may pose risk to aquatic life if large quantities reach water bodies.
Waste Disposal Method: Collect and place material in appropriate waste container. Dispose through licensed hazardous waste contractor under local, regional, national, and international regulations.
Container Disposal: Rinse containers and send to approved waste facility; never reuse empty drum for other purposes.
Special Precautions: Do not release into environment, groundwater, waters, or drains.
Consultation: Contact local environmental authorities for guidance.
UN Number: 1993
UN Proper Shipping Name: Flammable Liquid, N.O.S. (contains Ethylpyrrole)
Transport Hazard Class: Class 3 (Flammable Liquids)
Packing Group: III
Labels Required: Flammable liquid label
Transport in bulk (IMDG/IMO): Permitted with correct packaging
Special Precautions: Keep away from sources of flame, ensure container is sealed, secure load to prevent movement.
OSHA: Not specifically listed; general chemical safety applies. Handle under OSHA Hazard Communication Standards.
TSCA: Listed on the U.S. Toxic Substances Control Act inventory.
REACH Status: Consult local regulations in the European Union.
SARA 311/312 Hazard Categories: Flammable, acute toxicity, irritating to skin and mucous membranes.
California Proposition 65: Not listed.
Other Local Regulation: Check industrial hygiene and environmental regulations in country of use.
