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  Aldrich Vapor Phase FT-IR Spectral Library                    
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The Aldrich Vapor-Phase Library consists of 6,611 FT-IR spectra of compounds measured in gas phase. Most of the spectra (6,543) were acquired by Aldrich Chemical Company. The remaining spectra (68) were run at Thermo Fisher's, Madison, WI.

The Aldrich spectra were measured in a heated cell or light-pipe connected to the outlet of a gas chromatograph. The Thermo Scientific spectra were measured in gas cells at room temperature. For the Thermo Scientific spectra, the gases were diluted to near atmospheric pressure with nonabsorbing gases.

All of the spectra in this library are available in printed form in the Aldrich Library of FT-IR Spectra, Edition 1, Volume 3 Vapor-Phase. The Aldrich location number uses the following convention.

<page number> <spectrum letter>

For example, the spectrum with the location number 234B would be the second (or B spectrum) on page 234 of Aldrich Library of FT-IR Spectra, Edition 1, Volume 3.

Special thanks are extended to Dr. Charles Pouchert of Aldrich Chemical Company for his cooperation in preparing this library.

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