Why is mercaptan added to natural gas?

Why is mercaptan added to natural gas?

• A. To provide a detectable odor
• B. To increase energy content
• C. To prevent corrosion
• D. To change the color of the gas

Answer: (A)

Mercaptans are added to natural gas so that it has a strong, noticeable odor even at very low concentrations. Natural gas is mostly methane and is odorless, so without an odorant leaks could go undetected, creating safety risks from fires or asphyxiation. The sulfur-containing mercaptan odorant provides a reliable cue that something is leaking, making it the best answer. This purpose isn’t about increasing energy content, preventing corrosion, or changing color, but about enabling quick leak detection for safety.

Mercaptans are added to natural gas so that it has a strong, noticeable odor even at very low concentrations. Natural gas is mostly methane and is odorless, so without an odorant leaks could go undetected, creating safety risks from fires or asphyxiation. The sulfur-containing mercaptan odorant provides a reliable cue that something is leaking, making it the best answer. This purpose isn’t about increasing energy content, preventing corrosion, or changing color, but about enabling quick leak detection for safety.