Overview
Thiophene is a five-membered heterocyclic compound containing sulfur, structurally similar to benzene but with a sulfur atom replacing one CH group. It was first isolated from coal tar and is now synthesized industrially for its versatile reactivity. As a building block in organic chemistry, thiophene derivatives are critical in pharmaceuticals (e.g., cephalosporin antibiotics) and materials science. Its aromaticity and electron-rich nature make it a valuable intermediate in cross-coupling reactions and polymerization. Commercial production often involves catalytic processes like the reaction of butane or butadiene with sulfur compounds.
Physical and Chemical Properties
Thiophene is a volatile, flammable liquid with a benzene-like odor. Its boiling point (84°C) and density (1.051 g/cm³) are slightly higher than those of furan due to sulfur’s larger atomic mass. The compound exhibits typical aromatic stability, resisting addition reactions but undergoing electrophilic substitution (e.g., sulfonation, nitration). Notably, thiophene forms azeotropes with water and alcohols, complicating purification. It reacts vigorously with oxidizers, posing fire risks. Analytical methods like GC-MS or NMR are used to confirm purity, as impurities (e.g., thiophene derivatives) can affect downstream applications.
Main Applications
In pharmaceuticals, thiophene scaffolds are incorporated into drugs for antimicrobial, anti-inflammatory, and anticancer properties. For example, ticlopidine (an antiplatelet drug) derives from thiophene chemistry. Agrochemicals like insecticides and herbicides also utilize its derivatives. Materials science leverages thiophene-based polymers (e.g., PEDOT) for conductive coatings and organic electronics. Additionally, it serves as a solvent or catalyst in organic synthesis, particularly for sulfur-containing compounds. Its role in dye and resin production further underscores industrial versatility.
Safety and Storage
Thiophene’s flammability (flash point: -1°C) mandates storage in flammable liquid cabinets with proper grounding to prevent static discharge. Ventilation is critical to avoid vapor accumulation, which can form explosive mixtures with air (1.1–12.5% concentration). Personal protective equipment (PPE) like nitrile gloves and chemical goggles is essential during handling. Spills should be contained with inert absorbents (e.g., sand) and disposed of as hazardous waste. Regulatory compliance (e.g., OSHA, REACH) requires SDS documentation and hazard labeling for transport.
B2B Procurement Guide
Industrial buyers should prioritize suppliers with batch-specific Certificates of Analysis (CoA) to verify purity (≥98–99.5%). Packaging options include 200L steel drums or isotanks for bulk quantities, with nitrogen blankets to prevent oxidation. Key procurement criteria: competitive pricing (bulk discounts), lead times (2–4 weeks for custom orders), and logistics (ADR/IATA compliance for hazardous goods). Sample testing for residual solvents (e.g., hexane) is advised. Long-term contracts with quality-audited manufacturers ensure supply chain stability.
Related Manufacturers
- 主营：甲醛树脂、固体液体、硫酸钾固体、噻吩、二硫代氨基
- 主营：溴噻吩、分析纯试剂
- 主营：乙醛酸、铁甲酸、二甲基、噻吩基、羟乙基、草酰胺、3-氯丙炔、邻苯二甲、苯甲酰胺、溴氯海因、3-氯水扬酸、磷酸三甲酯、2-羟基喹喔啉、2-苯并唑啉酮、对羟基苯海因、3-环戊二羧酸、6-二氯异烟酸、2-氨基-5-氯苯酚
- 主营：涂料回收、日化原料回收、橡胶助剂回收、处理噻吩甲醛、酚醛树脂回收、回收真石漆、回收硬脂酸、回收钛白粉、回收化工原料、回收香精、回收硫酸镍、回收硅油、回收硅橡胶、回收食品添加剂、回收橡胶助剂、回收松香、回收石油树脂、回收芥酸酰胺、回收油酸酰胺、回收塑料助剂、回收酚醛树脂、回收聚乙烯醇、回收聚乙烯蜡、回收聚乙二醇、回收瓜尔胶、回收增塑剂