In order to detect the presence of propane, the propane industry uses an additive called:

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Multiple Choice

In order to detect the presence of propane, the propane industry uses an additive called:

Propane is odorless, so an odorant is added to make leaks noticeable. The additive used for this purpose is ethyl mercaptan because it has a very strong, sulfurous odor that humans can detect at extremely low concentrations. This low odor threshold means even small leaks are obvious quickly, which is essential for safety. Ethyl mercaptan is chosen because it remains effective at the tiny amounts used for odorization and doesn’t meaningfully alter fuel performance. The other substances listed aren’t used for propane odorization. Methanol is a toxic alcohol, ethylene glycol is an antifreeze, and N-butanol is a solvent; none are suitable odorants for fuel due to health concerns, odor practicality, or fuel-property impacts.

Propane is odorless, so an odorant is added to make leaks noticeable. The additive used for this purpose is ethyl mercaptan because it has a very strong, sulfurous odor that humans can detect at extremely low concentrations. This low odor threshold means even small leaks are obvious quickly, which is essential for safety. Ethyl mercaptan is chosen because it remains effective at the tiny amounts used for odorization and doesn’t meaningfully alter fuel performance.

The other substances listed aren’t used for propane odorization. Methanol is a toxic alcohol, ethylene glycol is an antifreeze, and N-butanol is a solvent; none are suitable odorants for fuel due to health concerns, odor practicality, or fuel-property impacts.

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