In database:
600-6500 cm-1
5.6-165 nm
Butane (C4H10)
Molecular weight 58
Freezing point: -138 C
Boiling point: -0.5 C

Infrared cross-sections from PNNL
FTIR infrared cross-sections from 600 to 6500 cm-1
Data available at 5 C, 25 C, and 50 C
Spectra is composite of on the order of 10 different pressures,backfilled with nitrogen to 760 T.
Images of PNNL data in cm2/molecule vs. wavenumbers
Images of PNNL data in cm2/molecule vs. microns

UV cross-sections
Please see The MPI-Mainz UV/VIS Spectral Atlas

Additional References

Fundamental frequencies for trans form from NIST Chemistry Webbook
n1 2965 cm-1 (ag) CH3 d-stretch
n2 2872 cm-1 (ag) CH3 s-stretch
n3 2853 cm-1 (ag) CH2 s-stretch
n4 1460 cm-1 (ag) CH3 d-deform
n5 1442 cm-1 (ag) CH2 scissor
n6 1382 cm-1 (ag) CH3 s-deform
n7 1361 cm-1 (ag) CH2 wag
n8 1151 cm-1 (ag) CH3 rock
n9 1059 cm-1 (ag) CC stretch
n10 837 cm-1 (au) CC stretch
n11 425 cm-1 (au) CCC deform
n12 2968 cm-1 (au) CH3 d-stretch
n13 2930 cm-1 (au) CH2 a-stretch
n14 1461 cm-1 (au) CH3 d-deform
n15 1257 cm-1 (au) CH2 twist
n16 948 cm-1 (au) CH3 rock
n17 731 cm-1 (au) CH2 rock
n18 194 cm-1 (au) CH3-CH2 torsion
n19 102 cm-1 (au) CH2-CH2 torsion
n20 2965 cm-1 (bg) CH3 d-stretch
n21 2912 cm-1 (bg) CH2 a-stretch
n22 1460 cm-1 (bg) CH3 d-deform
n23 1300 cm-1 (bg) CH2 twist
n24 1180 cm-1 (bg) CH3 rock
n25 803 cm-1 (bg) CH2 rock
n26 225 cm-1 (bg) CH3-CH2 torsion
n27 2968 cm-1 (bu) CH3 d-stretch
n28 2870 cm-1 (bu) CH3 s-stretch
n29 2853 cm-1 (bu) CH2 s-stretch
n30 1461 cm-1 (bu) CH3 d-deform
n31 1461 cm-1 (bu) CH2 scissor
n32 1379 cm-1 (bu) CH3 s-deform
n33 1290 cm-1 (bu) CH2 wag
n34 1009 cm-1 (bu) CC stretch
n35 964 cm-1 (bu) CH3 rock
n36 271 cm-1 (bu) CCC deform

List of available data for all molecules in database
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