Talk:Diphosgene

Untitled
This page is taken almost word for word from http://diphosgene.iqnaut.net/ without so much as a footnote or citation
 * You may not have noticed the text at the bottom of that page: "iqnaut.net, 2005. This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Diphosgene"." There is a correct citation: they cite us. – ClockworkSoul 01:26, 30 March 2006 (UTC)
 * I see no such text... 83.227.130.26 (talk) 08:55, 17 July 2009 (UTC)

Industrial use
I have worked for and with a number of companies that make diisocyanates on an industrial scale, and to the best of my knowledge none of them use diphosgene. I did a search and could find nothing to contradict this. The 2005 edition of Ullmann's Encyclopedia of Industrial Chemistry,, makes no mention of diphosgene in its article on diisocyanates. One reason for this may be that large scale synthetic photochemical reactions are rare. As my old photochemistry professor used to say "Photons aren't cheap reagents".

Consequently, I removed the sentence about diphosgene replacing phosgene in the production of diisocyanates. Silverchemist (talk) 16:44, 14 January 2012 (UTC)

Clarification needed
Is diphosgene a replacement for phosgene that is used directly as a replacement for the phosgene, or is it used as a conveninient source for preparing phosgene which is then used in the normal fashion? Of course, it could also be that it is used as a direct replacement with a reaction mechanism involving transient formation of phosgene then reacting with other reagents. The present text is vague or ambiguous and needs clarification. 150.227.15.253 (talk) 09:46, 18 November 2021 (UTC)