Methylacetylene-propadiene gas

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

An MPS gas is a mixture of two or more of propane, butane, butadiene, methylacetylene (propyne, CH₃C≡CH) and propadiene (CH₂=C=CH₂).^[1] They are marketed under different names including: "MPS", "Chem-O-Lean", "Apachi Gas", "FG-2 Gas", "Flamex" and "natural gas".^[1] The most commonly known type of MPS gas is the discontinued MAPP gas.^[2]

As a fuel gas, it burns hotter than propylene, propane or natural gas.

References

^ ^a ^b Jeffus, Larry (January 23, 2020). Welding: Principles and Applications. Cengage Learning. p. 172. ISBN 9780357377802 – via Google Books.
^ Porter, Michael (2004). Gas Burners for Forges, Furnaces, and Kilns. City: SkipJack Press. ISBN 1-879535-20-3.

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