Talk:Dichloroacetylene

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Decomposition

Does dichloroacetylene decompose directly into the elements during explosion, or does it form CCl₄ and other thermodynamically more stable chlorocarbons? Or does it only explode if it is in contact with air? --79.243.235.94 (talk) 20:49, 5 September 2013 (UTC)[reply]

By now I haven't found any specific information on that. My first guess would be 2 C₂Cl₂ -> 2 C + C₂Cl₄ because that could easily explain why it is much more stable when diluted in an inert gas or solvent (because this would be a two-molecule reaction, and dilution reduces the chance for two C₂Cl₂ molecules to meet). For the reaction C₂Cl₂ -> 2 C + Cl₂ it doesn't necessarily need the interaction of two molecules. But this is mere personal speculation.

If I compare C₂Cl₂ to its much better known analogue acetylene my guess may be wrong after all. Because acetylene is also prone to self-decomposition when concentrated but not when diluted, and its primary decomposition route seems to be C₂H₂ -> 2 C + H₂.

It could also be both - chlorine being produced first but then adding across the triple bond of a second C₂Cl₂ molecule when chlorine partial pressure is high enough.

Anyways, I can't say what exactly happens without a reliable source. And as said, I haven't found one yet. --2003:E7:772E:5A18:8146:4373:7DCC:18EA (talk) 04:46, 13 January 2021 (UTC)[reply]

pyrolysis of difluoromaleic anhydride

Shouldn't that be dichloromaleic anhydride?

That would make more sense in terms of stoichiometry. --2003:E7:772E:5A18:8146:4373:7DCC:18EA (talk) 05:00, 13 January 2021 (UTC)[reply]