vmelkon
National Hazard
Posts: 669
Registered: 25-11-2011
Location: Canada
Member Is Offline
Mood: autoerotic asphyxiation
|
|
naphthalene and ultra-violet light
Does naphthalene glow blue under ultra-violet light or am I imagining things. I have a mercury vapor lamp that I use to check out various substances
for fluorescence.
It looks like it is emitting as much blue light as paper and white cloths.
Signature ==== Is this my youtube page? https://www.youtube.com/watch?v=tA5PYtul5aU
We must attach the electrodes of knowledge to the nipples of ignorance and give a few good jolts.
Yes my evolutionary friends. We are all homos here. |
|
|
Artemus Gordon
Hazard to Others
Posts: 178
Registered: 1-8-2013
Member Is Offline
Mood: No Mood
|
|
Could be. Wikipedia <a href="http://en.wikipedia.org/wiki/Fluorescence#Organic_liquids">says</a>:
"Organic solutions such anthracene or stilbene, dissolved in benzene or toluene, fluoresce with ultraviolet or gamma ray irradiation."
Since anthracene is 3 fused benzene rings, and naphthalene is 2 fused benzene rings, I'd say there is a good chance you are right.
[Edited on 30-7-2014 by Artemus Gordon]
|
|
|
unionised
International Hazard
Posts: 5126
Registered: 1-11-2003
Location: UK
Member Is Offline
Mood: No Mood
|
|
It does fluoresce, but very little of that emission would be visible.
http://omlc.org/spectra/PhotochemCAD/html/001.html
However, commercial naphthalene might contain anthracene etc as an impurity.
A further complicating factor is that a mercury lamp also emits some visible light and the naphthalene might be just reflecting that.
Can you compare it against something like salt which does not fluoresce?
[Edited on 30-7-14 by unionised]
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
