Editing MAPP gas (section)

{{short description|Fuel gas based on a stabilized mixture of methylacetylene and propadiene}}
[[Image:Compressed gas cylinders.mapp and oxygen.triddle.jpg|250px|thumb|A set of MAPP and oxygen cylinders is used for [[oxy-fuel welding and cutting]].]]

'''MAPP gas''' was a [[trademarked]] name, belonging to [[The Linde Group]], a division of the former global chemical giant [[Union Carbide]], for a [[fuel gas]] based on a stabilized mixture of [[propyne|methylacetylene]] (propyne), [[propadiene]] and [[propane]]. The name comes from the original chemical composition, [[methylacetylene-propadiene]] [[propane]]. "MAPP gas" is also widely used as a generic name for [[UN number|UN]] 1060 stabilised methylacetylene-propadiene (unstabilised methylacetylene-propadiene is known as MAPD).

MAPP gas was widely regarded as a safer and easier-to-use substitute for [[acetylene]], but, early in 2008, its production was discontinued at the only remaining plant in North America that still manufactured it. However, there are many MAPP substitutes on the market, often labeled "MAPP", "MAP-X" or "MAP-Plus" but containing mostly [[propylene]] with some propane and in some cases also [[dimethyl ether]].<ref>See for example, "MAP-Pro" from [[BernzOmatic]][http://www.worthingtonindustries.com/getmedia/ff77868e-b526-44ae-9064-e51aaa5ea02f/wc001-map-pro-premium-hand-torch-fuel] {{Webarchive|url=https://web.archive.org/web/20150503225309/http://www.worthingtonindustries.com/getmedia/ff77868e-b526-44ae-9064-e51aaa5ea02f/wc001-map-pro-premium-hand-torch-fuel|date=2015-05-03}}</ref><ref>https://www.todaystools.co.uk/product/9</ref>
<ref>ProTorch Map-Pro made by UltraCool – [https://www.princessauto.com/file/general/8899320_sds_en_01_10_31_19.pdf PDF]</ref><ref>https://www.toolstation.com/map-x-gas-cylinder/p71066</ref>