H H Acetylene Acetylene is used in welding torches In pure oxygen, temperature of flame reaches2800° It would violently decompose to its elements, but the cylinder on the torch contains crushed firebrick wet with acetone to moderate it > Chapter 9Chapter 9 9 Acetylene • Acetylene is used in welding torches. • In pure oxygen, temperature of flame reaches 2800C. • It would violently decompose to its elements, but the cylinder on the torch contains crushed firebrick wet with acetone to moderate it. =>