Because natural gas is colourless and odourless, companies often add Mercaptan
or methanethiol, which has a pungent smell likened to rotten eggs, to make it easier to detect.
Limited Tenders are invited for Supply of ethyl mercaptan
(in new ms drums)
There were also reports the smell was due to a leak of an odorant called Mercaptan
, which is added to gas (which has no scent) to help people realise when a leak happens.
The scent being used for the scratch-and-sniff contains Mercaptan
, the same odorant that is added to natural gas to make it noticeable.
The most common type is one that adds a mercaptan
liquid into natural gas distribution systems so that leaks can be readily detected.
15 2014, veteran operator Crystal Rae Wise opened a faulty valve on a pipe carrying methyl mercaptan
, a chemical used to manufacture DuPont's popular insecticide called Lannate.
2]S can react with other compounds such as ethanol and sulfur-containing amino acids to form mercaptans
(most notably, methyl mercaptan
It's invisible and odorless without the mercaptan
that gas companies add to give it a rotten-egg smell.
The compatibilizing groups include amine, mercaptan
, epoxy, isocyanate, anhydride, alcohol, or acid groups.
The first documented instance of gas odorization brings us back to Germany in 1880, when a scientist named Von Quaglio added ethyl mercaptan
to give water gas a distinguishable smell.
The odor added to LP is normally ethyl mercaptan
, which smells like rotten eggs in order to detect the gas.
Roxas said Angelito San Juan, the renter of the ill-fated Unit 501-B of Two Serendra, did not smell the accumulated LPG fumes inside the room as ethyl mercaptan
- the chemical used as odorant of LPG - had vaporized beyond its recognizable level.