Overview
Sulfolene is a cyclic sulfone derivative with the chemical name 2,5-dihydrothiophene-1,1-dioxide. It is widely recognized for its role as a versatile intermediate in organic synthesis. The compound is characterized by its stability at room temperature and its ability to release sulfur dioxide when heated, making it useful in various chemical reactions. First synthesized in the mid-20th century, sulfolene has found applications in pharmaceuticals, where it serves as a building block for active ingredients. Its solubility in both water and organic solvents enhances its utility across different industrial processes.
Physical and Chemical Properties
Sulfolene is a white crystalline solid with a molecular weight of 118.16 g/mol. It has a density of 1.26 g/cm³ and melts at 65-67°C. The compound decomposes at 285°C, releasing sulfur dioxide gas. Its solubility profile includes water, alcohols, and most common organic solvents, which facilitates its use in diverse reaction conditions. One of the notable chemical properties of sulfolene is its thermal instability, which allows it to act as a source of sulfur dioxide in controlled reactions. This property is particularly valuable in polymer chemistry and the synthesis of sulfur-containing compounds.
Main Applications
Sulfolene is primarily used as an intermediate in the pharmaceutical industry for the synthesis of drugs, including antivirals and antibiotics. Its ability to release sulfur dioxide under heat makes it a useful reagent in polymer production, where it aids in the modification of polymer properties. In agrochemicals, sulfolene is employed in the synthesis of pesticides and herbicides. Additionally, it finds niche applications in specialty polymers and as a stabilizer in certain industrial processes. The compound's versatility ensures its demand across multiple sectors.
Safety and Storage
Sulfolene is classified as an irritant, posing risks to skin and eyes upon contact. Proper personal protective equipment (PPE), including gloves and goggles, is recommended when handling the compound. Adequate ventilation is essential to prevent inhalation of dust or vapors. Storage conditions should include a cool, dry environment, away from strong oxidizers. The compound is stable under normal conditions but may decompose if exposed to high temperatures, releasing sulfur dioxide—a hazardous gas. Containers should be tightly sealed and labeled appropriately.
B2B Procurement Guide
When procuring sulfolene, buyers should prioritize suppliers with verified certifications, such as ISO or GMP, to ensure product quality and consistency. Key specifications to confirm include CAS number (77-79-2), purity levels (typically 98-99%), and packaging options (e.g., 25 kg drums or custom quantities). Price negotiations should account for bulk discounts, with reference prices ranging approximately $20-$50/kg. Buyers are advised to request material safety data sheets (MSDS) and conduct supplier audits to mitigate risks. Long-term contracts may offer stability in pricing and supply chain reliability.
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