Product Name: 2-Cyanopyrrole
Chemical Family: Nitriles, Heterocyclic Compounds
Synonyms: 2-Pyrrolecarbonitrile
CAS Number: 4513-94-4
Recommended Use: Research, intermediate in synthesis, specialty chemical
Supplier Details: Manufacturer contact, emergency phone numbers, and address should be provided on the label or accompanying documentation.
GHS Classification: Acute toxicity (oral, dermal, inhalation), Skin and eye irritation, Specific target organ toxicity
Hazard Statement: Toxic if swallowed or in contact with skin, Harmful if inhaled, Causes serious eye irritation, May cause damage to organs through prolonged exposure
Pictograms: Skull and crossbones, Exclamation mark, Health hazard
Signal Word: Danger
Precautionary Measures: Do not eat, drink or smoke while handling, Avoid contact with eyes, skin, clothing, and avoid inhalation of dust, vapors, or mist
Chemical Name: 2-Cyanopyrrole
Chemical Formula: C5H4N2
Molecular Weight: 92.10 g/mol
Concentration: Greater than 98% (as supplied in pure form)
Impurities: Trace amounts of related pyrrole derivatives or residual solvents from synthesis
Inhalation: Move affected person to fresh air, keep warm and at rest, seek medical attention for symptoms such as coughing, shortness of breath or chest irritation
Skin Contact: Remove contaminated clothing, wash area with mild soap and water, consult a doctor if irritation or redness persists
Eye Contact: Rinse carefully with plenty of clean water for at least 15 minutes removing contact lenses if easy, seek medical advice for continuing pain, redness, or impaired vision
Ingestion: Rinse mouth thoroughly, do not induce vomiting, seek immediate medical care, give water only if victim is fully alert and conscious
Suitable Extinguishing Media: Use foam, dry chemical, or carbon dioxide for small fires, water spray for larger quantities
Unsuitable Media: Avoid direct water jets which may spread material
Special Hazards: May release toxic gases such as hydrogen cyanide, nitrogen oxides, or carbon oxides on combustion
Personal Protective Equipment for Firefighters: Self-contained breathing apparatus, full protective suit
Fire & Explosion Hazards: Vapors may form explosive mixtures with air, product may be sensitive to heat or sparks in some storage environments
Personal Precautions: Wear chemical-resistant gloves, protective clothing, and appropriate respiratory protection
Environmental Precautions: Prevent release into drains, soil, or surface water, dike spill area immediately if safe
Methods for Containment: Absorb liquid spills with suitable inert material such as sand or vermiculite, seal waste in suitable containers
Cleanup Procedures: Use non-sparking tools for collection, ventilate area well, dispose of materials in accordance with local regulations, decontaminate surfaces with household bleach if recommended by manufacturer, and handle all waste as hazardous
Safe Handling Tips: Keep containers closed tightly, handle only in chemical fume hoods or well-ventilated areas, avoid contact with skin, eyes, and clothing
Hygiene Measures: Wash hands and arms thoroughly after use, do not eat, smoke, or drink near chemicals, keep personal protective equipment clean and uncontaminated
Storage Conditions: Store in cool, dry, well-ventilated location, out of direct sunlight, separate from incompatible substances such as strong acids, oxidizers, and bases, security measures to prevent misuse
Container Materials: Use glass, high-density polyethylene, or steel containers compatible with organic solvents
Occupational Exposure Limits: No specific regulatory limit set for 2-cyanopyrrole, but use occupational exposure limits for comparable toxic aromatic nitriles as a guide
Engineering Controls: Chemical fume hood or exhaust ventilation, eyewash stations, safety showers
Personal Protective Equipment: Chemically resistant gloves (nitrile, butyl), splash-resistant goggles, laboratory coat or apron, disposable respirator if dust or vapor forms in high concentration
Biological Monitoring: Not commonly available, but monitoring may focus on cyanide metabolites.
Appearance: Pale yellow to light brown crystalline solid, may be supplied in powder form
Odor: Slightly aromatic, pungent
Odor Threshold: Not determined
pH: Not applicable (solid)
Melting Point: 71 - 73°C
Boiling Point: 255°C at 760 mmHg
Flash Point: 127°C (closed cup)
Evaporation Rate: Not determined
Flammability: Combustible solid
Vapor Pressure: Low at 20°C
Solubility in Water: Poor, but soluble in most organic solvents
Partition Coefficient (log Kow): Approx. 1.0 (literature value)
Decomposition Temperature: Not fully characterized, may generate hazardous gases
Chemical Stability: Stable under ordinary storage and handling conditions
Reactivity: May react violently with strong oxidizers, acids, or alkalis
Conditions to Avoid: High temperatures, open flames, incompatible materials like strong oxidizers
Hazardous Decomposition Products: Hydrogen cyanide, nitrogen oxides, carbon oxides on thermal decomposition
Polymerization: No evidence of hazardous self-polymerization under normal conditions
Likely Routes of Exposure: Skin contact, inhalation, accidental ingestion
Acute Toxicity: Oral LD50 (rat): estimated between 100 and 300 mg/kg
Skin and Eye Effects: Causes irritation and redness, prolonged exposure may trigger burns or permanent tissue damage
Inhalation Hazards: Vapors or dusts may irritate respiratory tract, cause nausea, dizziness, headaches, with higher exposure possibly causing cyanosis or convulsions
Potential Chronic Effects: Long-term exposure may lead to liver, kidney, or nervous system damage, symptoms typically non-specific but can progress with repeated contact
Carcinogenicity: Not classified by IARC, NTP, or OSHA as carcinogenic
Other Data: Individuals with respiratory or skin conditions may be more susceptible to effects
Toxicity to Aquatic Life: May be highly toxic to fish and invertebrates at low concentrations
Persistence and Degradability: Resistant to rapid biodegradation in aquatic environments, can persist for days to weeks
Bioaccumulation: Not expected to significantly bioaccumulate due to low log Kow, but breakdown products (nitriles and cyanides) could cause environmental problems
Mobility in Soil: Low water solubility slows migration, but can leach through porous soils when dissolved in organic solvents
Other Adverse Effects: Release to water bodies should be avoided to protect aquatic habitats, and secondary poisoning of predators possible from contaminated prey
Waste Handling: Collect all waste in secure, properly labeled containers, separate from incompatible materials
Disposal Methods: Incineration in authorized chemical waste facilities recommended, do not flush to sewer or ground
Contaminated Packaging: Triple-rinse containers before disposal, follow regulations for hazardous waste packaging
Regulatory Compliance: Adhere to all local, regional, and national hazardous waste disposal guidelines, keeping documentation of quantity and method
UN Number: May require classification as toxic solid organic, consult with original shipping documents
DOT/IATA/IMDG Proper Shipping Name: Organic solid, toxic, n.o.s. (contains 2-cyanopyrrole)
Transport Hazard Classes: Toxic material, class 6.1
Packing Group: II (substantial hazard)
Label Requirements: Toxic substance label, handle under strict control during shipping
Environmental Hazards: Mark as environmentally hazardous for bulk shipment
Special Precautions: Ship upright, use absorbent material for leakage, do not transport with incompatible chemicals such as strong oxidizers or acids
OSHA Status: Considered hazardous under OSHA criteria
EPA Status: Not specifically listed, but may fall under sections for hazardous waste and water pollutant standards
SARA Title III: Not listed for threshold planning quantities, but still reportable as a hazardous substance depending on state and federal reporting rules
TSCA Inventory: May be present, check supplier or US EPA
International Regulations: Subject to restrictions in certain regions under REACH, may be flagged for additional handling guidelines in Europe, Asia, or Canada
Labeling: Hazard pictograms, signal words, precautions, and supplier info must be present on all packages extended through entire supply chain
Worker Protection: Training, documentation, and regular review of safe handling practices required by most jurisdictions
