[Gulfvet91]

I am looking for a good place to find plots of the wavelenghts of different chemical compounds for a paper I am writing for a class.  I know such things are abundant if you are a millionaire but I don't happen to be one so free would be great.  Does anyone know of a good source for me?  I am looking for compounds such as Ammonium Bifluoride, Sodium bifluoride, Sulfur monochloride and Sulfur chloride and Arsenic trichloride.

[Gulfvet91]

I need this information for a paper on the feasibility of remote sensing of chemical weapons.  These compounds are known precursors for weapons such as sarin and VX.

[Arkcon]

I was waiting for more information from you.  However, even so, your application is a little hard to understand.  You're looking for "wavelengths" but what general range and under what circumstances?  Do you want visible range detection?  In which case, you're asking for basically, the color of the substances in bulk.  Do you want their infrared spectrum?  We do that by grinding the solid and locking it into a sealed instrument.  Do you expect to hit traces of these solids with say a UV lamp, and get a visible fluorescence glow?  These compounds also have a highly specific element spectrum, when excited inside a flame, do you mean that application?  Gamma or x-ray excited fluorescence? (Sorry, I know little about those, but others may be able to help)  I do know they require pointing a powerful source at the target, and there seems to be something of a limit as to what the airport personnel are allowed to do to people -- 'tho I wouldn't put it past them.