| Reference Label | Details |
|---|---|
| as quoted by NIST WebBook | as quoted by NIST WebBook |
| est unc | estimated uncertainty |
| Keffler 1927 | L.-J.-P. Keffler and F. C. Guthrie, J. Phys. Chem. 31, 58-67 (1927) Investigation on the Heats of Combustion of Proposed Secondary Standard Substances and on Position and Optical Isomers |