T-Butyl Mercaptan (TBM, tert-Butyl Mercaptan) Rubber O-Rings & Gasket Compatibility

Tert-Butyl mercaptan, commonly abbreviated as TBM, is a volatile sulfur-containing compound with the chemical formula C4H10S. This clear to slightly yellow liquid is distinguished by its extremely strong and unpleasant odor, which makes it highly effective as a safety additive. TBM is most widely used as an odorant in natural gas and liquefied petroleum gas systems, where it provides an immediate and recognizable warning in the event of a leak. In addition to fuel gas odorization, tert-butyl mercaptan functions as a chemical intermediate in the manufacture of specialty chemicals and certain pharmaceutical compounds. Its reactive thiol group allows it to participate in sulfur-based synthesis pathways across multiple industrial processes. Because TBM is flammable and may present health hazards through inhalation, ingestion, or skin contact, careful handling and controlled storage are essential. It should be kept in properly sealed containers, away from ignition sources, and used in well-ventilated environments. The use of appropriate personal protective equipment and adherence to established safety procedures helps minimize exposure risks. Its strong odor threshold and reliable performance continue to make tert-butyl mercaptan a critical component in gas safety and related industrial applications.

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