Acetylene Ethyne HCCH 25 Reactions utilise: Acetylene 9 Reactions form: Acetylene C 2 H 2      Real, long lived, electronically neutral reagent chemical. Gram formula weight (molecular mass) = 26.037 Melting point = -81.8 °C Boiling point = -83.6 °C Purity = 99.99 % Solubility in organics = soluble Flammable, explosive gas. Olefins (ethene & propene) have replaced acetylene as the most important feed for the petrochemical industry. Wikipedia Page: Acetylene is defined with respect to the entities below: The entities below are defined with respect to: Acetylene Acetylene, terminal hydrogen (generic) Alkyne (AS/A2 generic) Brønsted Acid, non-hydroxy (generic) Molecular material (generic) pi-HOMO Lewis base (generic) Type 3 Lewis acid/base complex (generic) chemical compound molecule metal molecular science reaction mechanism ionic material acid base geometry reactivity synthesis science knowledge chemistry Lewis