Tert-butyl Mercaptan TBM CAS 75-66-1

CAS NO:75-66-1
ECNO: 200-890-2
MF: C4H10S

 

Tert-butyl mercaptan (TBM), also known as 2-methyl-2-propanethiol, is an organosulfur compound with the chemical formula (CH₃)₃CSH and a CAS number of 75-66-1. It is characterized by its strong, unpleasant odor and is a colorless liquid at room temperature.
Chemical Properties
Molecular Formula: C₄H₁₀S
Molecular Weight: 90.19 g/mol
Odor Threshold: Less than 1 ppb, indicating its potent smell.
Uses
Tert-butyl mercaptan has several important applications:
Gas Odorant: It is primarily used as an odorant for natural gas, which is otherwise odorless. This allows for the detection of gas leaks, enhancing safety by alerting individuals to potential hazards before reaching explosive levels.
Chemical Intermediate: TBM serves as a key raw material in the synthesis of various agrochemicals and other chemical substances. It is involved in several organic reactions and is used in the production of chain-transfer agents for copolymerization processes.
Flavoring Agent: Although it has been listed as a flavor additive by the European Food Safety Authority, its use in food products is limited due to its strong odor.
Preparation
Tert-butyl mercaptan is not commonly found in nature but can be synthesized through various chemical reactions. One notable method involves the reaction of isobutylene with hydrogen sulfide over a catalyst, which is the primary industrial method for its production.
Safety and Handling
Due to its highly odorous nature and potential toxicity, proper safety measures should be taken when handling TBM. It is classified as a hazardous material, and exposure can lead to health risks, including respiratory issues and environmental hazards.
In summary, tert-butyl mercaptan (TBM) is a significant chemical compound with vital roles in safety applications and chemical synthesis, characterized by its strong odor and specific chemical properties.