http://en.wikipedia.org/wiki/Ethanethiol
Ethanethiol has a strongly disagreeable odor. The threshold for human detection is as low as one part in 2.8 billion parts of air. According to the 2000 edition of the Guinness Book Of World Records, ethanethiol is the "smelliest substance" in existence.
Ethanethiol is intentionally added to butane and propane to impart an easily noticed smell to these odorless fuels.
0 comments
Post a Comment