Talk:Azulene

Density of Azulene[edit]

Can someone please find and list the density of azulene? Kryptid 66.82.9.49 22:22, 24 March 2007 (UTC)[reply]

I would guess 1.1 g/mL. -lysdexia 02:06, 1 October 2006 (UTC)

The method of Le Bas gives 1.15 g/mL of the liquid at the normal boiling point. Stieltjes (talk) 19:59, 19 June 2012 (UTC)[reply]

Azulene comes from the spanish word "Azul"?[edit]

"Azul" is a portuguese word also, and is present in almost all latin languages to mean a dark blue. In italian is "Azzurro", in catalan/occitan/french "Azur", all having the root in latin, which hat two spellings: "Azzurum" or "Azureus". Is there any reference that says that Azulene comes from spanish "Azul"? —Preceding unsigned comment added by 193.54.238.42 (talk) 08:49, 28 June 2010 (UTC)[reply]

0.02 what?[edit]

I find only a number, no unit. m/m%? Not. g/l probably. Alfa-ketosav (talk) 16:36, 24 June 2018 (UTC)[reply]

Systematic name[edit]

The systematic name ends with -pentaene, but should the "a" not be elided to form -pentene? BrightSunMan (talk) 11:45, 23 August 2022 (UTC)[reply]

BrightSunMan Systematic names can be a bit of a minefield but Chemspider confirms the name in the article is correct (although no chemist I know would use it). Wikipedia has to use such reliable sources Mike Turnbull (talk) 21:03, 23 August 2022 (UTC)[reply]

Azulene in the News[edit]

FYI

– Moved to foot of Talk as the most recent contribution

https://scitechdaily.com/violating-the-universal-kashas-rule-scientists-uncover-secrets-of-a-mysterious-blue-molecule/

Just throwing this out there for anybody who wants to do something with it and knows what they are doing better than I do. — Preceding unsigned comment added by 66.244.107.237 (talk) 09:05, 24 September 2023 (UTC)[reply]

Original article in JACS is doi:10.1021/jacs.3c07625 and open-access. I'd like to see a better WP:SECONDARY source before this is incorporated here (by someone more competent than me in the physical chemistry/spectroscopy). See also Kasha's rule: the fact of azulene's violating that rule has been known since at least 1999 and is already mentioned in our article. Mike Turnbull (talk) 13:44, 24 September 2023 (UTC)[reply]

To add to article[edit]

Basic information to add to this article: what this compound smells like. If it's aromatic, exactly which aromas does it have? 98.123.38.211 (talk) 23:30, 11 April 2024 (UTC)[reply]

IP editor. According to this reference it "emits an odor resembling mothballs". That's not surprising if they mean the compound naphthalene, which also has two rings and the same C₁₀H₈ molecular formula (i.e. they are isomers). As our article aromatic compound makes clear, chemists now use the word "aromatic" with a specific more technical meaning: not all aromatic compounds have much aroma and of course people experience aromas in different ways, for example when describing a fine wine. Mike Turnbull (talk) 10:46, 12 April 2024 (UTC)[reply]