Thiophene

Thiophene is a heterocyclic aromatic compound with the molecular formula C4H4S and CAS number 110-02-1. It consists of a five-membered ring containing four carbon atoms and one sulfur atom. With a molecular weight of 84.14 g/mol, thiophene is a colorless liquid at room temperature that serves as an important building block in organic synthesis and pharmaceutical chemistry.

Thiophene is a colorless, volatile liquid with a characteristic benzene-like odor at room temperature. It has a boiling point of 84°C and is slightly soluble in water but miscible with most organic solvents including ethanol, ether, and benzene. The compound exhibits aromatic properties due to its conjugated π-electron system and is chemically stable under normal conditions.

Thiophene is primarily used as a building block in organic synthesis, particularly in pharmaceutical and agrochemical manufacturing. It serves as a precursor for various thiophene derivatives used in medicinal chemistry, including anti-inflammatory and antimicrobial compounds. Additionally, thiophene and its derivatives are utilized in the production of dyes, polymers, and as intermediates in fine chemical synthesis.

Thiophene should be handled with appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing. Work in well-ventilated areas or under fume hoods to avoid inhalation of vapors. Eliminate ignition sources as thiophene is flammable. Use non-sparking tools and ensure proper grounding of equipment. Store containers tightly closed and avoid contact with strong oxidizing agents.

Thiophene should be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources and direct sunlight. Keep away from incompatible materials such as strong oxidizing agents and acids. Store in appropriate secondary containment and ensure containers are properly labeled. Maintain storage temperatures below 25°C and check containers regularly for leaks or damage.

In case of skin contact with thiophene, immediately remove contaminated clothing and wash affected area thoroughly with soap and water for at least 15 minutes. If eye contact occurs, rinse immediately with clean water for 15 minutes while holding eyelids open. For inhalation exposure, move to fresh air immediately. If ingested, do not induce vomiting and seek immediate medical attention.

Thiophene disposal must comply with local, national, and international waste regulations. The substance should be treated as hazardous waste and disposed of through licensed waste management facilities. Do not discharge into drains, soil, or water bodies. Small quantities can be incinerated at appropriate high-temperature facilities. Contact certified waste disposal companies for proper collection and treatment procedures.

Thiophene is classified under ADR Class 3 (flammable liquids) as Packing Group II, indicating moderate danger level during transport. Packages must comply with UN packaging requirements and be properly labeled with appropriate hazard markings. Transport vehicles must be equipped with appropriate safety equipment and drivers must hold valid ADR certification. Ensure proper documentation accompanies shipments.

Thiophene is subject to standard chemical regulations including REACH registration requirements in the European Union and CLP classification obligations. While not classified as a SVHC (Substance of Very High Concern), it must comply with occupational safety regulations and transportation requirements under ADR. Users must maintain safety data sheets and follow workplace exposure limits where established by local authorities.

Thiophene is available through OYSI, a leading European distributor of specialty chemicals serving industrial and research customers across Europe. OYSI provides reliable supply chains and technical support for thiophene and related chemical products. Contact OYSI directly for pricing, availability, and delivery options. Ensure your supplier provides proper documentation including certificates of analysis and safety data sheets.