Spectrophotometric Reference for Inorganics?

  • Thread starter mishima
  • Start date
  • #1
532
31

Main Question or Discussion Point

I am looking for absorbance spectra and extinction coefficients (molar absorptivities) for common inorganic substances like potassium and sodium salts. I am only finding this information for biological substances.

Am I misinterpreting what the spectrophotometer can do? I would like to, for example, use Beer's Law to calculate concentration of a salt in solution after measuring absorbance with a known extinction coefficient.
 

Answers and Replies

  • #2
Borek
Mentor
28,476
2,873
Visible?

Does the NaCl solution look colored?

Infrared? UV?
 
  • #3
532
31
I mean salts in general, like potassium permanganate or copper (II) nitrate. I am unaware if sodium chloride can be used with a spectrophotometer; I was under the impression that some could not.

would like an absorbance spectrum (absorbance vs. wavelength), so all wavelengths. I would have thought this information would be tabulated somewhere, like a chemical handbook, but I am not finding it.
 
  • #4
397
21
You can try here: http://webbook.nist.gov/chemistry/

Failing that you should just try to find the original research. It will likely be old which makes it (kind of) easier to find them for free.
 

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