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Product Name: 2-Acetylpyrrole
Synonyms: 1-(1H-pyrrol-2-yl)ethanone
CAS Number: 1072-83-9
Recommended Use: Flavor and fragrance ingredient; chemical intermediate
Company Contact: Chemical supplier or manufacturer—emergency phone numbers available on shipping documentation
Emergency Overview: Pale yellow solid or crystalline powder, distinct odor reminiscent of bread or popcorn, used in controlled settings for food flavoring or fragrance blending
GHS Classification: Acute Toxicity (Oral) Category 4, Eye Irritation Category 2A
Signal Word: Warning
Hazard Statements: Harmful if swallowed; causes serious eye irritation; may cause mild skin irritation
Pictograms: Exclamation mark
Precautionary Statements: Avoid breathing dust; wash hands thoroughly after handling; do not eat, drink, or smoke when using; use protective gloves/eye protection
Potential Acute Effects: Eye redness, irritation, stomach discomfort if ingested, mild respiratory irritation if inhaled
Potential Chronic Effects: Repeated skin or eye contact may cause dryness or cracking
Chemical Name: 2-Acetylpyrrole
CAS Number: 1072-83-9
EC Number: 213-997-2
Purity: Typically ≥98%
Impurities: Trace amounts of pyrrole derivatives, water, organic solvents depending on grade and supplier
Eye Contact: Rinse immediately with plenty of water for at least 15 minutes, lift eyelids occasionally, seek medical attention if irritation persists
Skin Contact: Remove contaminated clothing, wash skin with soap and water, get medical attention for persistent irritation
Inhalation: Move to fresh air, monitor for symptoms like coughing or breathing difficulty, seek medical advice if ill effects develop
Ingestion: Rinse mouth with water, do not induce vomiting, seek medical assistance if feeling unwell, show product label if possible
Suitable Extinguishing Media: Dry chemical, carbon dioxide, alcohol foam, or water spray
Specific Hazards: Emits toxic fumes (carbon monoxide, carbon dioxide, nitrogen oxides) in fire
Protective Equipment: Firefighters need self-contained breathing apparatus and chemical-resistant clothing
Additional Advice: Move containers from fire area if possible; cool exposed containers with water; contain run-off from fire control to prevent environmental contamination
Personal Precautions: Use personal protective equipment including gloves, safety eyewear, dust mask
Environmental Precautions: Avoid release to environment; prevent spillage from entering drains, water courses, or soil
Spill Cleanup Methods: Sweep or scoop up solid material, transfer to labeled waste container, ventilate area; wash site with water and detergent after material has been picked up
Disposal: Dispose waste in accordance with local, regional, and national regulations
Safe Handling: Handle in well-ventilated area, avoid dust generation, wear suitable personal protective equipment
Hygiene Practices: Wash thoroughly after handling, remove contaminated clothing before entering eating areas
Storage Conditions: Keep container tightly closed, store away from heat, sparks, open flame, and direct sunlight; keep dry and well-ventilated
Incompatibilities: Strong oxidizing agents, strong acids
Occupational Exposure Limits: None established for this compound
Engineering Controls: Use general or local exhaust ventilation
Personal Protective Equipment: Chemical-resistant gloves (nitrile or PVC), safety glasses or goggles, laboratory coat, approved dust respirator if dust forms
Environmental Controls: Prevent uncontrolled emission to soil, drains, water sources via effective containment measures
Appearance: Pale yellow crystalline solid
Odor: Bread-like, popcorn aroma
Melting Point: 64–66°C
Boiling Point: 265–266°C
Flash Point: 138°C (closed cup)
Solubility: Slightly soluble in water, readily soluble in alcohol, ether, chloroform
Vapor Pressure: Low at 25°C
Density: Approximately 1.13 g/cm³
pH: Not applicable (solid at ambient conditions)
Partition Coefficient (log Kow): Estimated at 0.6–1
Explosive Properties: No data
Oxidizing Properties: Not an oxidizer
Chemical Stability: Stable under recommended storage and handling conditions
Conditions to Avoid: High humidity, excess heat, sources of ignition
Materials to Avoid: Oxidizers, acids, alkalis
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, nitrogen oxides under fire or thermal decomposition
Polymerization: No hazardous polymerization expected
Acute Toxicity: Oral LD50 in rats: circa 650 mg/kg
Inhalation:** Irritation to respiratory tract reported with significant inhalation exposure
Skin and Eye Contact:** May cause moderate irritation, mostly reversible
Chronic Effects: No significant long-term hazards in low-level exposure; prolonged contact may cause sensitization or allergic reaction in predisposed individuals
Carcinogenicity: Not classified as carcinogen by NTP, IARC, OSHA
Mutagenicity: No data suggesting mutagenic potential in available studies
Aquatic Toxicity: Not expected to be toxic to aquatic life in low concentrations; high spillage can impact oxygen demand in water bodies
Persistence and Degradability: Readily biodegradable in standard screening tests
Bioaccumulation Potential: Low due to moderate water solubility and low log Kow
Mobility in Soil: Expected to have moderate mobility; leaching possible if released in significant quantities
Other Adverse Effects: Avoid uncontrolled disposal into environment; chronic exposure not well studied in wild species
Waste Treatment Methods: Incinerate in approved facility, otherwise landfill in compliance with local regulation
Packaging Disposal: Decontaminate and recycle or dispose of packaging as hazardous chemical waste
Precautions: Handle waste with gloves, goggles, and within chemical fume hood or proper ventilation; do not discharge into sewers or natural water sources
UN Number: Not regulated for transport under UN Model Regulation
Proper Shipping Name: Not classified as hazardous for transport
Hazard Class: Not classified
Packing Group: Not applicable
Marine Pollutant: No
Special Precautions: Avoid stowage near strong oxidants; keep containers tightly sealed, upright, and in additional secondary containment when possible
Inventory Listings: TSCA (US), EINECS (EU), DSL (Canada), AICS (Australia), ENCS (Japan), KECI (Korea), PICCS (Philippines), NZIoC (New Zealand)—all list substance
OSHA Regulation: Not specifically regulated under US OSHA—follow general chemical safety requirements
SARA Title III: Not listed as Section 302 EHS or Section 313 TRI chemical
California Prop 65: Not on Proposition 65 list
Right to Know Lists: Check local, state, and provincial chemical inventories as requirements may differ
Labelling Requirements: Adhere to GHS/OSHA mandates with hazard pictograms and precautionary statements
