Product Name: 2,5-Dibromothiophene
Chemical Formula: C4H2Br2S
CAS Number: 3141-27-7
Recommended Use: Organic synthesis, specialty chemical manufacture, research applications
Supplier Details: Manufacturer or distributor address and emergency contact number on label
Emergency Phone: Refer to supplier documentation or label for 24-hour emergency contact
Trade Name: No commonly recognized synonyms in industrial settings
UN Number: Not regulated for transport under most systems, always check current guidelines
GHS Classification: Acute toxicity (oral, inhalation, dermal), skin and eye irritant
Signal Word: Warning
Hazard Statements: Harmful if swallowed; causes skin and eye irritation; may cause respiratory irritation
Pictograms: Exclamation mark (irritant), possibly health hazard symbols based on exposure
Precautionary Statements: Avoid breathing dust or fumes; wash hands after handling; wear protective gloves and eye protection
Potential Health Effects: Eye and skin exposure can cause redness and irritation, inhalation may provoke coughing or sore throat, ingestion results in gastrointestinal discomfort
Environmental Hazards: Harmful to aquatic life, especially in high concentrations; spills threaten water sources and should not drain untreated into environment
Chemical Name: 2,5-Dibromothiophene
CAS Number: 3141-27-7
Concentration: 98% - 100% pure in standard laboratory or industrial preparations
Impurities: Trace solvents or related brominated thiophenes possible in minor amounts, normally less than 1%
Additives: No stabilizers or preservatives in typical pure material
Inhalation: Move to fresh air, breathe deeply, seek medical attention if symptoms endure or worsen
Skin Contact: Rinse affected area with plenty of water, remove contaminated clothing, wash exposed skin thoroughly with soap, consult physician for persistent irritation
Eye Contact: Rinse cautiously with water for several minutes, remove contact lenses if present and continue rinsing, medical advice warranted if redness or discomfort remains
Ingestion: Rinse mouth, never induce vomiting, drink water if conscious, immediate medical evaluation recommended
Notes for Physician: Treat symptomatically; monitor for respiratory distress and irritation to mucous membranes
Suitable Extinguishing Media: Dry chemical powder, carbon dioxide, alcohol-resistant foam—avoid water spray directly on burning material
Unsuitable Extinguishing Media: Water jets can spread chemical and fire, increasing hazard
Flammability: Compound is combustible, decomposition generates toxic fumes including hydrogen bromide, sulfur oxides
Emergency Procedures: Evacuate area, use standard fire protective gear including self-contained breathing apparatus, keep upwind
Hazardous Combustion Products: Hydrogen bromide, sulfur dioxide, carbon oxides
Personal Precautions: Use chemical-resistant gloves, eye protection, and approved respirator; ventilate area well
Spill Cleanup: Contain the spill, collect with inert absorbent (sand or vermiculite), avoid generating dust or fumes, transfer waste to secure container for disposal
Prevent Entry: Block discharge into drains, surface water, or soil
Decontamination: Wash spill area with plenty of water and detergent after removal
Handling: Handle only in chemical fume hood or well-ventilated space, avoid contact with skin and eyes, do not breathe vapors or dust; use proper PPE
Storage: Keep container tightly closed in a cool, dry, well-ventilated facility, avoid exposure to direct sunlight or extreme temperature changes; separate from incompatible materials such as strong oxidizers
Transfer: Use non-sparking tools and static discharge precautions where bulk handling occurs
Engineering Controls: Local exhaust ventilation, chemical hood, explosion-proof systems in production situations
Personal Protective Equipment: Nitrile or neoprene gloves, safety goggles, lab coat or coveralls; use face shield for large quantities or splashing risk
Respiratory Protection: Approved respirator when risk of inhalation exists
Workplace Hygiene: Wash thoroughly after handling, do not eat, drink, or smoke in work areas
Exposure Limits: No occupational exposure limits specifically established, monitor for dust, vapor, or fume levels
Appearance: Colorless to pale yellow crystalline solid or liquid at room temperature
Odor: Distinct, possibly sharp or musty, characteristic of thiophenes
Melting Point: 34 - 37°C
Boiling Point: 233°C
Flash Point: Above 100°C (closed cup)
Solubility: Insoluble in water, soluble in common organic solvents (acetone, ethanol, chloroform)
Vapor Pressure: Low at room temperature
Density: Approximately 2.18 g/cm³ at 25°C
Partition Coefficient (log Kow): Not well-documented, but expected to be moderately lipophilic
Evaporation Rate: Not rapid; volatilization not significant in ambient conditions
Stability: Stable under normal conditions of storage and handling
Conditions to Avoid: Strong heat, sparks, open flame, long exposure to air and moisture
Incompatible Materials: Strong oxidizers, acids, bases
Hazardous Decomposition Products: Hydrogen bromide, sulfur oxides, carbon monoxide, carbon dioxide
Polymerization: No hazardous reactions known with proper storage
Acute Toxicity: Can cause irritation through all major exposure routes (oral, dermal, inhalation)
Symptoms: Burning sensation, coughing, redness, eye watering, dizziness or gastrointestinal distress following significant exposure
Long-term Effects: Data limited, possible sensitization or chronic respiratory irritation with repeated contact; no evidence for carcinogenicity in typical exposures
LD50 (Oral): Not fully established; structurally related compounds suggest moderate toxicity
Skin Sensitization: Some risk of irritation, particularly with prolonged or repeated exposure
Mutagenicity/Carcinogenicity: No classification by IARC or other relevant bodies
Aquatic Toxicity: Harmful to aquatic organisms, evidence from related halogenated thiophenes indicates risk; should never enter waterways untreated
Persistence: Likely slow to degrade in soil or water; risk of bioaccumulation based on physical properties
Mobility: Limited water solubility suggests low mobility in ground, but spill containment crucial
Other Risks: Impact data limited, caution applies near environmental release points
Waste Treatment: Collect in appropriately labeled hazardous waste containers; dispose by incineration at licensed facility
Container Disposal: Rinse thoroughly, decontaminate, puncture and discard according to local hazardous waste regulations
Prohibited Actions: Do not dump in domestic garbage or pour down drains; illegal and harmful
Regulatory Status: Handle as hazardous waste under most local, national, and regional rules
UN Number: Not typically regulated for shipment as dangerous goods, but double-check recent transport codes
Proper Shipping Name: 2,5-Dibromothiophene
Transport Hazard Class: None assigned, use general chemical safety for shipping unless otherwise directed by authorities
Packing Group: Not specified
Marine Pollutant: Not formally listed, yet care required to prevent bulk release into waterways
Special Precautions: Package tightly, secure against leaks; transport with MSDS documentation if demanded by local regulations
International Regulations: Not subject to uniform global regulation; check REACH (EU), TSCA (US), or equivalent depending on shipment or site
Domestic Standards: No broad bans, but not intended for consumer use; handled under standard occupational health and safety chemical laws
Labeling Requirements: Clearly marked containers, hazard pictograms, precautionary statements, supplier contact
Specific Provisions: Monitor for legislation changes if manufacturing, importing, or transporting large quantities, and always verify status with local regulatory authority
