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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 methylacetylene (propyne), propadiene and propane.
Allene exists in equilibrium with methylacetylene (propyne) and the mixture is sometimes called MAPD for methylacetylene-propadiene: . H 3 CC≡CH ⇌ H 2 C=C=CH 2. for which K eq = 0.22 at 270 °C or 0.1 at 5 °C.
Methylacetylene-propadiene (MPS) gas is a type of fuel gas used in oxy-fuel welding and cutting torches, comprising a mixture of several gases. MPS gases [ edit ]
Whereas purified propyne is expensive, MAPP gas could be used to cheaply generate large amounts of the reagent. [8] Propyne, along with 2-butyne, is also used to synthesize alkylated hydroquinones in the total synthesis of vitamin E. [9]
The result of the move request was: Not moved MAPP gas is the common term, and the article is largely about the proprietary gas. Salix : 17:30, 12 September 2010 (UTC) MAPP gas → Methylacetylene-propadiene gas — I propose that this be moved to the non-proprietary name Methylacetylene-propadiene gas, which include a section called "MAPP gas ...
MAPP gas can be used at much higher pressures than acetylene, sometimes up to 40 or 50 psi in high-volume oxy-fuel cutting torches which can cut up to 12-inch-thick (300 mm) steel. Other welding gases that develop comparable temperatures need special procedures for safe shipping and handling.
Gas explosions (1 C, 30 P) L. Liquefied petroleum gas (11 P) N. Natural gas (14 C, 58 P) P. Propane (4 C, 16 P) S. ... MAPP gas; Methane; Methylacetylene-propadiene ...
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