Editing Methanethiol (section)

==Safety==
The [[safety data sheet]] (SDS) lists methanethiol as a colorless, flammable gas with an extremely strong and repulsive smell. At very high concentrations it is highly toxic and affects the central nervous system. Its penetrating odor provides warning at dangerous concentrations. An odor threshold of 1&nbsp;[[parts per billion|ppb]] has been reported.<ref name= "Devos">{{cite book|last=Devos|first=M|title=Standardized Human Olfactory Thresholds|year=1990|publisher=IRL Press |location=Oxford |isbn=0199631468 |page=101|author2=F. Patte |author3=J. Rouault |author4=P. Lafort |author5=L. J. Van Gemert}}</ref> The United States [[Occupational Safety and Health Administration|OSHA]] Ceiling Limit is listed as 10&nbsp;ppm.

=== Accidents ===
In 2001 a rail car fire of {{Convert|25000|gal|L}} near [[Trenton, Michigan]] left three people dead and nine injured.<ref>{{Cite web |title=Deadly Explosion At Chemical Plant |url=https://www.cbsnews.com/news/deadly-explosion-at-chemical-plant/ |access-date=2022-05-25 |website=www.cbsnews.com |date=14 July 2001 |language=en-US}}</ref>

On November 15, 2014, at [[DuPont]]'s [[La Porte, Texas]] facility, 24,000 lb (10,886 kg) of methyl mercaptan were released and travelled downwind into surrounding areas, killing four and injuring one other.<ref>{{Cite web |title=DuPont La Porte Facility Toxic Chemical Release {{!}} CSB |url=https://www.csb.gov/dupont-la-porte-facility-toxic-chemical-release-/#:~:text=Accident%20Description&text=The%20accident%20at%20DuPont%27s%20facility,fungicide%20manufacturing%20process,%20was%20released. |access-date=2022-06-02 |website=www.csb.gov}}</ref><ref name="CSB Video">{{cite web |author1=US Chemical Safety Board |title=Animation of Chemical Release at DuPont's La Porte Facility |url=https://www.youtube.com/watch?v=pbFzuS8Bdhw&pp=ygUQbWV0aHlsIG1lcmNhcHRhbg%3D%3D |website=Youtube |access-date=8 October 2023 |format=Video |date=30 September 2015}}</ref> In 2023, DuPont pleaded guilty to criminal negligence for its role in the leak. The company was ordered to pay a $12 million fine and donate an additional $4 million to the [[National Fish and Wildlife Foundation]].<ref>{{Cite web |date=2023-04-24 |title=Southern District of Texas {{!}} DuPont and former employee sentenced for gas release that killed four {{!}} United States Department of Justice |url=https://www.justice.gov/usao-sdtx/pr/dupont-and-former-employee-sentenced-gas-release-killed-four |access-date=2023-11-13 |website=www.justice.gov |language=en}}</ref><ref>{{Cite web |date=2023-04-24 |title=DuPont ordered to pay $16M in Texas plant leak that killed 4 |url=https://fox5sandiego.com/news/business/ap-business/dupont-ordered-to-pay-16m-in-texas-plant-leak-that-killed-4/ |access-date=2023-04-24 |website=FOX 5 San Diego |language=en-US}}</ref>

On July 14, 2022, an accidental release in [[Charlotte, North Carolina]] led to the temporary closure of local government offices.<ref>{{Cite news |last=Limehouse |first=Jonathan |date=2022-07-14 |title=What is the strong natural gas odor smell in Charlotte NC? |work=Charlotte Observer |url=https://www.charlotteobserver.com/news/local/article263462253.html |access-date=2022-07-14 |archive-url=https://web.archive.org/web/20220715063619/https://www.charlotteobserver.com/news/local/article263462253.html |archive-date=2022-07-15}}</ref>

On April 10, 2024, an accidental release<ref>{{cite web |last1=Carr |first1=Dillon |title=Mansfield-area schools back to normal following natural gas scare |url=https://www.richlandsource.com/2024/04/10/area-schools-back-to-normal-following-natural-gas-scare/ |website=Richland Source |date=10 April 2024 |access-date=2024-04-11}}</ref> of a higher-than expected level of methyl mercaptan into the natural gas supply was attributed to an "upstream supplier" for [[Columbia Gas]]. This release was noticed by residents in at least [[Richland County, Ohio|Richland]], [[Ashland County, Ohio|Ashland]], and [[Lorain County, Ohio|Lorain]] counties in Ohio. Numerous schools cancelled their school day and numerous evacuations took place out.