Product Name: 2-Oxo-3-Methylthiophene
Synonyms: 3-Methyl-2-thiophenone
CAS Number: 4673-14-7
Recommended Use: Laboratory chemicals, chemical manufacturing
Supplier: Reach out to chemical vendors or research suppliers; always check label for emergency numbers.
Emergency Contact: National chemical safety support lines or local emergency services.
Hazard Classification: Skin corrosion/irritation, eye irritation, harmful if swallowed
Signal Word: Warning
Hazard Statements: Causes skin irritation, causes eye irritation, harmful if swallowed or inhaled
Pictograms: Exclamation mark symbol
Precautionary Statements: Wash thoroughly after handling, avoid breathing dust or vapors, use protective gloves and eyewear, in case of inadequate ventilation, wear respiratory protection.
Emergency Overview: Eye, skin, and respiratory tract irritation risk, always store away from incompatible materials.
Chemical Name: 2-Oxo-3-Methylthiophene
CAS Number: 4673-14-7
Concentration: >98% by weight
Impurities or Stabilizers: Minimal, check lot specifics with supplier.
Eye Contact: Rinse cautiously with water for several minutes, remove contact lenses if present, seek medical advice if irritation persists.
Skin Contact: Wash immediately with plenty of soap and water, remove contaminated clothing, get medical attention if symptoms continue.
Inhalation: Move to fresh air, keep comfortable for breathing, call a physician if symptoms show up.
Ingestion: Rinse mouth, drink plenty of water if conscious, do not induce vomiting, get medical help right away.
Suitable Extinguishing Media: Use dry chemical, CO2, or foam extinguishers; avoid using water jets directly.
Specific Hazards: Emits toxic fumes under fire conditions, like carbon oxides and sulfur oxides.
Protective Equipment for Firefighters: Wear self-contained breathing apparatus, use full protective gear.
Special Procedures: Stay upwind and keep out of low areas; remove containers from fire zone if possible.
Personal Precautions: Wear protective clothing, gloves, goggles; ensure proper ventilation.
Spill Cleanup: Cover with inert absorbent, scoop into chemical waste container, wash area with water and soap.
Environmental Precautions: Prevent entry into drains, soil, or waterways; inform authorities if major spill occurs.
Handling: Handle in a chemical fume hood, avoid inhalation, and minimize skin contact; keep away from food and drinks.
Storage: Store tightly closed, in a cool, dry, well-ventilated place; keep away from direct sunlight, combustibles, and incompatible chemicals like oxidizers.
Specific Instructions: Label containers clearly, use grounded containers if transferring larger quantities.
Exposure Limits: No established occupational exposure limits; use engineering controls when handling larger amounts.
Engineering Controls: Work in well-ventilated area, use local exhaust or fume hood.
Eye Protection: Safety goggles or chemical splash glasses
Skin Protection: Chemical resistant gloves, lab coat or apron
Respiratory Protection: Use NIOSH-approved respirator for dust or vapor; regular workplace air monitoring helps spot issues early.
Appearance: Pale yellow to brownish solid or oil
Odor: Distinct sulfur, thiophene-like scent
Molecular Formula: C5H4OS
Molecular Weight: 112.15 g/mol
Melting Point: Around 28-32°C
Boiling Point: Approximately 200°C
Density: About 1.18 g/cm³ at 25°C
Solubility: Limited in water, readily dissolves in organic solvents (ethanol, acetone, ether).
Vapor Pressure: Low, need to contain vapors especially at higher temps.
Flash Point: Above 98°C (closed cup)
Chemical Stability: Stable under standard storage and handling conditions.
Reactivity: May react with strong acids, bases, and oxidizing agents.
Conditions to Avoid: Excess heat, direct sunlight, open flames.
Hazardous Decomposition: May produce carbon monoxide, sulfur oxides, and irritating organic vapors.
Acute Toxicity: Harmful through ingestion, inhalation, skin or eye contact
Symptoms: Irritation, headache, dizziness, possible nausea with high exposure
Skin Sensitization: Possible with repeated or prolonged contact
Carcinogenicity: Not listed as carcinogen by NTP, IARC or OSHA at time of writing
Other Risks: Chronic exposure can cause dermatitis or respiratory tract effects.
Aquatic Toxicity: Potentially harmful to aquatic life if large volume enters waterways.
Persistence and Degradability: Not expected to be highly persistent but breakdown in environment can release sulfur compounds.
Bioaccumulation: Unlikely to bioaccumulate significantly, data still limited.
Other Information: Avoid uncontrolled environmental release, follow regulations for waste management.
Waste Treatment Methods: Collect and deliver for proper chemical disposal in approved waste disposal facilities.
Ecological Impact: Prevent chemical, packaging, and cleanup materials from entering drains and soils.
Container Disposal: Rinse empty containers thoroughly before recycling or disposal.
UN Number: Not classified as hazardous for transport under standard regulatory frameworks
Proper Shipping Name: Chemical, Non-Regulated
Transport Hazard Class: Not assigned
Packing Group: Not regulated
Special Precautions: Avoid transport with strong oxidizers or incompatible substances, secure containers tightly during shipping to prevent leaks or breakage.
TSCA Listing: Listed
REACH Status: Check for up-to-date registrant information with supplier
OSHA Regulations: Observe federal and state safety and health guidelines
Right-to-Know: Consult local, state, and national chemical safety lists for reporting
Labeling: Comply with laboratory and transport labeling rules, including pictograms and safety phrases found in GHS conventions.
