Product Name: N-Methylpyrrole
Chemical Formula: C5H7N
CAS Number: 96-54-8
Synonyms: 1-Methylpyrrole
Recommended Use: Organic intermediate, solvent, lab reagent
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Hazard Classification: Flammable liquid, irritant
GHS Label Elements: Signal word: Warning; Flammable liquid pictogram; Exclamation mark pictogram for skin and eye irritation
Potential Health Effects: Eyes and skin can become irritated on contact. Prolonged or repeated contact can dry skin. Inhalation might cause dizziness, headache
Routes of Exposure: Inhalation, skin and eye contact, ingestion
Symptoms: Burning eyes, cough, nausea, headache, drowsiness
Chemical Name: N-Methylpyrrole
Synonym: 1-Methylpyrrole
Concentration: >98%
Impurities: Pyrrole (<2%), Water (<1%)
CAS Number: 96-54-8
Inhalation: Remove to fresh air. Seek medical attention if symptoms continue. Monitor breathing. If not breathing, give artificial respiration.
Skin Contact: Remove contaminated clothes. Wash skin with plenty of soap and water. Get medical help if irritation persists.
Eye Contact: Rinse eyes for at least 15 minutes with plenty of water, holding eyelids apart. Seek medical help if irritation continues.
Ingestion: Rinse mouth. Do not induce vomiting unless directed by medical personnel. Drink water if conscious. Get medical advice immediately.
General Advice: Get medical attention for any persistent symptoms or if unsure how to proceed.
Suitable Extinguishing Media: Dry chemical powder, CO2, alcohol-resistant foam
Unsuitable Extinguishing Media: Direct water jet
Fire Hazards: Vapors may form explosive mixtures with air. Thermal decomposition can release toxic gases including oxides of nitrogen and carbon monoxide.
Protective Equipment: Wear self-contained breathing apparatus, full protective gear
Special Procedures: Keep containers cool by spraying with water. Prevent run-off from entering drains or waterways.
Personal Precautions: Ventilate area. Keep unnecessary people away. Wear chemical splash goggles, gloves, and protective clothing.
Spill Response: Absorb with inert material like sand or earth, shoveled into a chemical waste container. Do not allow residue to flow into sewers or waterways.
Environmental Precautions: Avoid release into the environment. Prevent entry into drains, watercourses, or soil.
Cleanup Methods: Follow safe disposal methods. Wash spill area thoroughly after cleanup.
Safe Handling: Use only in well-ventilated places. Avoid breathing vapors. Prevent contact with eyes, skin, and clothes. No smoking, sparks, or open flames nearby.
Storage Conditions: Store in tightly closed bottles in a cool, dry, well-ventilated spot. Keep away from heat, flame, sources of ignition. Use only approved storage containers.
Incompatibilities: Strong oxidizing agents, strong acids
Further Precautions: Use explosion-proof electrical/ventilating/lighting equipment.
Exposure Limits: No established OSHA or ACGIH exposure limits; minimize exposure
Engineering Controls: Fume hood recommended. Use local exhaust. Maintain eyewash stations and safety showers nearby.
Personal Protective Equipment (PPE): Chemical-resistant gloves (nitrile or neoprene), splash goggles, flame-resistant lab coat. Respiratory protection if vapor concentration gets high.
Work Hygiene: Wash hands after handling; avoid eating, drinking, and smoking in work areas.
Appearance: Colorless to pale yellow liquid
Odor: Sweet; amine-like
Boiling Point: 114°C
Melting Point: -33°C
Flash Point: 20°C (closed cup)
Autoignition Temperature: 440°C
Explosive Limits: Lower - 2.2%, Upper - 11.6% (in air)
Solubility: Slightly soluble in water, miscible with organic solvents
Vapor Pressure: 7.5 mmHg at 25°C
Density: 0.953 g/cm³ at 25°C
Viscosity: Not determined
Reactivity: Flammable. Reacts with strong oxidizers.
Chemical Stability: Stable at room temperature under recommended storage and handling conditions.
Incompatible Materials: Strong acids, oxidizers, certain plastics
Hazardous Decomposition: CO, CO₂, NOx can form under fire conditions.
Polymerization: Hazardous polymerization does not normally occur.
Acute Toxicity: LD50 (oral, rat): Estimated >2000 mg/kg
Inhalation: Irritation possible on exposure to high concentrations
Skin Contact: May cause redness and dryness
Eye Contact: Can cause irritation and burning
Chronic Effects: Prolonged contact may aggravate existing skin disorders
Carcinogenicity: No data available; not listed by IARC, NTP, OSHA
Mutagenicity and Reproductive Toxicity: Data lacking; no evidence from known research
Ecotoxicity: Not expected to produce acute toxicity; LC50 (fish) >100 mg/L
Persistence and Degradability: Expected to be readily biodegradable based on structure
Bioaccumulation Potential: Low due to water solubility and volatility
Mobility in Soil: Likely to volatilize and leach through soil
Other Adverse Effects: No evidence for significant long-distance effects
Precautions: Keep out of aquatic environments where possible
Waste Disposal Methods: Incinerate in chemical incinerator equipped with afterburner and scrubber. Dispose of in accordance with local, regional, national, and international regulations.
Container Disposal: Empty container can retain product; triple rinse, then puncture and discard as hazardous waste
Precaution for Disposal: Do not dump into drains, surface waters, or landfills. Discuss options with licensed chemical disposal company.
UN Number: UN1993
Proper Shipping Name: Flammable liquid, n.o.s. (contains N-methylpyrrole)
Transport Hazard Class: 3 (Flammable liquid)
Packing Group: III
Label Requirements: Flammable liquid (3)
Special Transport Precautions: Keep container tightly sealed, upright. Secure against movement. Protect from sources of ignition and extreme temperatures during transport.
TSCA (US): Listed
EINECS (EU): 202-511-9
Canada DSL/NDSL: Listed/DSL
OSHA Regulations: Considered hazardous for flammability, acute toxicity
SARA Title III: Not subject to reporting under Sections 302, 304, or 313
WHMIS Classification: B2 (Flammable liquid), D2B (Toxic material)
Other Regulations: Follow local, national, and international chemical safety rules for use, storage, transport, and disposal.
