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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.
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 ]
A report addressing various defects with the Bernzomatic torch products was published in February 2019: United Testing Services Study On February 23, 2012, all fuel cylinders containing MAP/Pro (propylene) and MAPP gas were recalled. Cylinders containing propane fuel were omitted from the recall but under review due to several injuries ...
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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.
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]