EM absorption spectra of materials

[McCrunchy]

Hello all,

 

I 'm looking for a website/reference that would give the real and imaginary dieletric constants of various materials ( gases, water, solvents, oil, plastics, minerals, metals etc.) on a wide range of EM wavelengths. I would like to get an overview of who absorbs in what domain.

 

Thanks for your help,

 

McCrunchy

[Klaynos]

http://refractiveindex.info/

 

http://luxpop.com/

 

Are the two most commonly used as far as I'm aware.