Product Name: Pyrrole-2-Carbaldehyde
Chemical Formula: C5H5NO
CAS Number: 1003-29-8
Synonyms: 2-Formylpyrrole, Pyrrole-2-aldehyde
Recommended Use: Laboratory chemicals, chemical synthesis, research, intermediates
Supplier Information: Chemical manufacturers or laboratories providing this material should be contacted for up-to-date information, responsible contact details, and support on safe usage.
GHS Classification: Acute Toxicity (Oral, Dermal, Inhalation) – Category 4, Eye Irritation – Category 2A, Skin Irritation – Category 2
Signal Word: Warning
Hazard Statements: Harmful if swallowed, in contact with skin or if inhaled. Causes skin irritation. Causes serious eye irritation.
Pictograms: Exclamation mark
Precautionary Statements: Avoid breathing dust, fumes, gas, mist, vapors, spray. Wash thoroughly after handling. Wear protective gloves, clothing, eye protection, face protection. If on skin: Wash with plenty of soap and water. If in eyes: Rinse cautiously with water for several minutes.
Chemical Name: Pyrrole-2-Carbaldehyde
CAS Number: 1003-29-8
Concentration: Purity often above 98% in laboratory grade samples
Impurities: Trace contaminants possible, largely related to synthetic route but typically minimized in quality-controlled production. Always check supplier certificate of analysis for batch-specific data.
Inhalation: Move person to fresh air. Seek medical attention if symptoms occur, such as coughing, difficulty breathing, or chest discomfort.
Skin Contact: Remove contaminated clothing. Wash affected area thoroughly with soap and water for at least 15 minutes. Get medical help if irritation persists.
Eye Contact: Rinse cautiously with water for at least 15 minutes. Keep eyelids open and remove contact lenses if present and easy. Seek prompt medical attention.
Ingestion: Rinse mouth with plenty of water, do not induce vomiting unless directed by medical personnel. Obtain medical aid immediately if any discomfort, nausea, or other symptoms appear.
Suitable Extinguishing Media: Use standard foam, dry chemical powder, carbon dioxide, or water spray.
Unsuitable Extinguishing Media: Strong water jets can spread the material.
Specific Hazards: During fire, toxic and irritating fumes such as nitrogen oxides and carbon monoxide may be released.
Protective Equipment: Firefighters should wear self-contained breathing apparatus and full protective gear. Prevent contamination from extinguishing run-off.
Special Precautions: Remove containers from fire area if safe to do so. Keep upwind, avoid inhaling vapors or smoke.
Personal Precautions: Evacuate unprotected personnel. Use personal protective equipment, including gloves and splash goggles. Avoid dust formation and breathing vapors.
Environmental Precautions: Do not let product enter drains or watercourses. Notify authorities if large spills reach the environment.
Containment and Cleanup: Absorb spillage with inert material such as sand or earth. Collect in labeled containers for disposal. Ventilate the area and wash the spill site after material pick-up.
Handling: Handle in a chemical fume hood if possible to avoid exposure. Use proper personal protective equipment, avoid generating dust or aerosols. Wash hands before breaks and after work.
Storage: Store in a tightly closed container, away from incompatible substances such as oxidizing agents. Keep in a cool, dry, and well-ventilated place. Protect from direct sunlight and ignition sources. Monitor inventory frequently for container integrity.
Exposure Limits: No established occupational exposure limits, but minimize to lowest feasible levels.
Engineering Controls: Use local exhaust ventilation or work inside a chemical fume hood.
Personal Protection: Wear chemical-resistant gloves (nitrile recommended), safety goggles, laboratory coats, and if dust or vapor formation is likely, use a respirator.
Hygiene Measures: No eating, drinking or smoking during use. Wash hands and face thoroughly after handling. Remove contaminated clothing promptly.
Appearance: Pale yellow to brown liquid
Odor: Characteristic, slightly pungent
Melting Point: Around -6°C
Boiling Point: Approximately 222°C
Flash Point: Above 90°C (closed cup)
Solubility: Moderately soluble in water, freely soluble in ethanol, ether, and other common organic solvents
Vapor Pressure: Low at room temperature
Density: About 1.11 g/cm³ at 20°C
pH: Not available
Viscosity: Not readily available; behaves as expected for an aldehyde in this chemical class.
Chemical Stability: Stable under normal temperatures and recommended storage conditions.
Reactivity: Can react with strong oxidizers, acids, and bases.
Hazardous Decomposition: Produces carbon monoxide, carbon dioxide, and nitrogen oxides if decomposition occurs in fire or extreme heat.
Conditions to Avoid: Prolonged exposure to air, excessive heat, and contamination with incompatible materials must be avoided to maintain chemical stability.
Acute Effects: Ingestion, inhalation, or skin contact can cause headaches, nausea, eye and skin irritation, coughing, and general discomfort.
Chronic Effects: Data on long-term health effects are limited, typical lab-exposure hazards apply including possible dermal sensitization.
LD50/LC50: Precise toxicological values have not been fully established; good laboratory safety practices lower health risk.
Carcinogenicity: Not classified as a carcinogen by established regulatory agencies.
Other Information: Always treat unknown materials and mixtures with heightened caution as individual susceptibilities vary.
Environmental Impact: Limited information available; should not be released into the environment due to possible toxicity to aquatic life.
Mobility in Soil: May be moderately mobile, take steps to prevent leaching into the water table or sewage.
Persistence/Degradability: Product can undergo some decomposition over time with light and biological action but does not readily biodegrade.
Bioaccumulation Potential: Not likely to bioaccumulate based on molecular size and structure.
Disposal Methods: Dispose of as hazardous chemical waste. Consult local, regional, and national authorities for guidance. Do not pour down drains, into environment, or with household waste.
Container Disposal: After proper cleaning, containers may be disposed of as chemical waste or recycled in accordance with regulations.
Precautions: Wear protective equipment during handling, avoid any contact with contents during disposal.
UN Number: Not regulated under common transportation codes (confirm according to shipping method or carrier).
Shipping Name: Pyrrole-2-Carbaldehyde or chemical sample
Transport Hazard Class: Not hazardous under most international transportation guidelines, yet always check for any local variances.
Packing Group: Not assigned unless mixed or packaged with hazardous components.
Environmental Hazards: Not classed as environmentally hazardous for transport, but packaging must remain secure and intact to prevent leaks.
Precautions: Protect containers from physical damage, heat, and keep upright during transport. Ensure accompanying documentation meets legal and safety requirements.
OSHA: Not specifically regulated but falls under the general laboratory chemical safety rules.
TSCA: Listed under the US Toxic Substances Control Act Inventory.
REACH: Requires registration above threshold quantities in the EU.
Other Global Regulations: Vary by country, so users should consult regional safety guidelines, reporting, and registration standards.
Labeling Requirements: Correct chemical labels, hazard information, precautionary statements, and pictograms must be displayed on all containers and shipping materials.
Workplace Safety: Staff must receive chemical safety and hazardous materials training according to company or institutional policy.
