Product Name: 3,4-Dimethoxy Thiophene
Synonyms: 3,4-Dimethoxythiophene; Dimethoxythiophene
Chemical Formula: C6H8O2S
Molecular Weight: 144.19 g/mol
Recommended Use: Laboratory research, chemical synthesis
Manufacturer: Chemical suppliers, research distributors
Contact Information: Emergency telephone number provided by the supplier, general inquiries routed to customer support
GHS Classification: Flammable liquid, Eye irritation, Skin irritation, Acute toxicity
Signal Word: Warning
Hazard Statements: Flammable liquid and vapor; Causes skin irritation; Causes serious eye irritation; May cause respiratory irritation
GHS Label Pictograms: Flame, Exclamation mark
Precautionary Statements: Keep away from heat sources, use with ventilation, avoid breathing vapor, wear protective gloves and eye protection, wash hands after use, avoid release to environment
Potential Health Effects: Inhalation may cause irritation of respiratory tract; skin or eye contact may lead to redness and discomfort
Chemical Name: 3,4-Dimethoxy Thiophene
CAS Number: 6055-19-2
Concentration: >99%
Impurities/Additives: Minimal trace organic or inorganic impurities possible, not expected to significantly affect hazard profile
Inhalation: Move to fresh air, monitor for breathing difficulty, get medical attention if symptoms persist
Skin Contact: Wash with soap and water without delay, remove contaminated clothing, seek medical help if irritation develops
Eye Contact: Rinse cautiously with water for at least 15 minutes, keep eyelids open, consult medical staff for persistent redness or pain
Ingestion: Rinse mouth, seek immediate medical help, do not induce vomiting unless instructed by medical person
Most Important Symptoms: Respiratory irritation, skin or eye discomfort, gastrointestinal upset if swallowed
Suitable Extinguishing Media: Carbon dioxide, dry chemical powder, alcohol-resistant foam
Unsuitable Media: Direct water stream for large fires may spread fire
Special Protective Equipment: Wear self-contained breathing apparatus, full protective gear
Specific Hazards: Vapors may form explosive mixtures with air, combustion may produce toxic gases like carbon oxides and sulfur oxides
Advice for Firefighters: Approach from upwind, keep containers cool by spraying with water if safe, evacuate beyond danger area if necessary
Personal Precautions: Evacuate area, provide adequate ventilation, wear protective gloves and eye protection
Environmental Precautions: Prevent entry into drains, watercourses, or soil; report significant spills to local authority
Methods for Cleanup: Absorb with inert material like sand, collect in containers for disposal, wash area with plenty of water, minimize vapors with non-sparking tools
Reference to Other Sections: Refer to Exposure Controls and PPE for protective measures; Disposal Considerations for waste handling
Precautions for Safe Handling: Use in well-ventilated location, keep away from sources of ignition, avoid skin and eye contact, avoid inhaling vapor or mist
Handling Advice: Use spark-proof tools, ground containers, take measures to prevent static discharge
Storage Conditions: Store in tightly sealed container, in a cool, dry, and ventilated area, away from heat, open flames, and direct sunlight
Incompatibilities: Avoid strong acids, bases, and oxidizing agents
Special Requirements: Store separately from incompatible materials, label containers properly
Occupational Exposure Limits: No specific occupational exposure limits established, recommend minimizing exposure as per good laboratory practices
Engineering Controls: Use fume hood or local exhaust ventilation to minimize vapor exposure
Personal Protective Equipment: Gloves (nitrile recommended), chemical splash goggles, lab coat, closed-toe shoes
Respiratory Protection: Respirator with organic vapor cartridge if ventilation inadequate
Hygiene Measures: Wash hands before breaks and after handling, remove contaminated clothing and wash before reuse
Environmental Controls: Avoid release to environment, use appropriate containment to avoid environmental contamination
Appearance: Colorless to pale yellow liquid
Odor: Characteristic, mild aromatic
Odor Threshold: Not established
pH: Not applicable
Melting Point: -35°C
Boiling Point: 185–188°C
Flash Point: 62°C (closed cup)
Evaporation Rate: Not determined
Flammability: Flammable in presence of open flames
Upper/Lower Flammability Limits: Data not available
Vapor Pressure: 0.5 mmHg at 25°C
Vapor Density: Not determined
Relative Density: 1.15 g/cm³
Solubility: Slightly soluble in water, soluble in most organic solvents
Partition Coefficient (n-octanol/water): Data not available
Auto-ignition Temperature: 272°C
Decomposition Temperature: Not known
Viscosity: Not determined
Chemical Stability: Stable under standard handling and storage conditions
Reactivity: No hazardous reactivity expected under normal conditions
Possible Hazardous Reactions: Strong oxidizers may cause violent reaction
Conditions to Avoid: Heat, flames, sparks, static electricity, incompatible materials
Incompatible Materials: Strong acids, strong bases, oxidizing agents
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, sulfur oxides during combustion or thermal decomposition
Acute Toxicity: No data on LD50 available, expected to have low acute toxicity with proper handling
Skin Corrosion/Irritation: Causes irritation upon contact
Serious Eye Damage/Irritation: Causes eye irritation
Respiratory Sensitization: May cause respiratory tract irritation if inhaled
Germ Cell Mutagenicity: Not classified due to insufficient data
Carcinogenicity: Not listed as carcinogenic by IARC, NTP, or OSHA
Reproductive Toxicity: No known reproductive hazards
STOT-Single Exposure: Possible irritation of airways and mucous membranes
STOT-Repeated Exposure: No data indicating chronic exposure risk
Aspiration Hazard: Not expected under normal uses
Ecotoxicity: No specific data but structurally related compounds have shown moderate aquatic toxicity
Persistence and Degradability: No studies available; general expectation is moderate persistence, partial degradability
Bioaccumulative Potential: Not known; estimated to show moderate bioaccumulation potential
Mobility in Soil: Slight mobility predicted due to low water solubility
Other Adverse Effects: Avoid uncontrolled environmental releases, chemical may be hazardous to aquatic organisms
Waste Treatment Methods: Collect waste in tightly sealed containers, label clearly, and provide to authorized hazardous waste disposers
Disposal of Contaminated Packaging: Rinse thoroughly before recycling or disposing according to local regulations
Environmental Precautions: Prevent splashes to soil, sewer, or waterways
Legal Requirements: Disposal carried out in accordance with local, regional, and national regulations governing hazardous chemical waste
UN Number: 1993
UN Shipping Name: Flammable liquid, n.o.s. (contains 3,4-Dimethoxy Thiophene)
Hazard Class: 3 (Flammable liquids)
Packing Group: III
Environmental Hazards: Not considered marine pollutant
Transport Precautions: Secure containers firmly, keep away from sources of ignition, personnel involved in transport trained and equipped with emergency kits
TSCA (USA): Listed
REACH (EU): Not registered for high-volume manufacture
WHMIS Classification (Canada): Not assigned, follows flammable and irritant chemical guidelines
OSHA Hazards: Flammable liquid, irritant
SARA Title III: Not subject to Section 313 reporting
Other Local/International Regulations: Compliance required with workplace safety and health agencies in respective regions, including training and reporting obligations for hazardous chemicals
