Dodecane
- Formula: C12H26
- Molecular weight: 170.3348
- IUPAC Standard InChI: InChI=1S/C12H26/c1-3-5-7-9-11-12-10-8-6-4-2/h3-12H2,1-2H3
- IUPAC Standard InChIKey: SNRUBQQJIBEYMU-UHFFFAOYSA-N
- CAS Registry Number: 112-40-3
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
View 3d structure (requires JavaScript / HTML 5) - Other names: n-Dodecane; Adakane 12; Ba 51-090453; CH3(CH2)10CH3; Bihexyl; Dihexyl; Duodecane; NSC 8714
- Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- Data at other public NIST sites:
- Options:
Data at NIST subscription sites:
- NIST / TRC Web Thermo Tables, "lite" edition (thermophysical and thermochemical data)
- NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data)
NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.
Reaction thermochemistry data
Go To: Top, IR Spectrum, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
+
=
By formula: C12H24 + H2 = C12H26
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | -125.4 ± 1.5 | kJ/mol | Chyd | Rogers and Skanupong, 1974 | liquid phase; solvent: Hexane |
| ΔrH° | 125.7 ± 2.1 | kJ/mol | Chyd | Bretschneider and Rogers, 1970 | liquid phase; solvent: glacial acetic acid |
=
By formula: C12H26 = C12H26
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | -12.7 | kJ/mol | Ccb | Melaugh, Mansson, et al., 1976 | liquid phase; Unpublished results of Zwolinski and Desai |
| ΔrH° | -12.2 ± 1.4 | kJ/mol | Ccb | Melaugh, Mansson, et al., 1976 | liquid phase |
4 +
=
By formula: 4H2 + C12H18 = C12H26
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | -549. ± 2. | kJ/mol | Chyd | Flitcroft, Skinner, et al., 1957 | liquid phase |
+ 4
=
By formula: C12H18 + 4H2 = C12H26
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | -532. ± 3. | kJ/mol | Chyd | Flitcroft, Skinner, et al., 1957 | liquid phase |
+
= C12H26O3S +
By formula: C12H26 + H2O4S = C12H26O3S + H2O
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 290. ± 17. | kJ/mol | Cm | Roth and Rist-Schumacher, 1944 | liquid phase |
IR Spectrum
Go To: Top, Reaction thermochemistry data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Gas Phase Spectrum
Notice: This spectrum may be better viewed with a Javascript and HTML 5 enabled browser.
Notice: Concentration information is not available for this spectrum and, therefore, molar absorptivity values cannot be derived.
Additional Data
View image of digitized spectrum (can be printed in landscape orientation).
View spectrum image in SVG format.
Download spectrum in JCAMP-DX format.
| Owner | NIST Standard Reference Data Program Collection (C) 2018 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
|---|---|
| Origin | Sadtler Research Labs Under US-EPA Contract |
| State | gas |
References
Go To: Top, Reaction thermochemistry data, IR Spectrum, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Rogers and Skanupong, 1974
Rogers, D.W.; Skanupong, S.,
Heats of hydrogenation of sixteen terminal monoolefins. The alternating effect,
J. Phys. Chem., 1974, 78, 2569-2572. [all data]
Bretschneider and Rogers, 1970
Bretschneider, E.; Rogers, D.W.,
A new microcalorimeter: heats of hydrogenation of four monoolefins,
Mikrochim. Acta, 1970, 482-490. [all data]
Melaugh, Mansson, et al., 1976
Melaugh, R.A.; Mansson, M.; Rossini, F.D.,
The energy of isomerization of n-dodecane into 2,2,4,6,6-pentamethylheptane,
J. Chem. Thermodyn., 1976, 8, 623-626. [all data]
Flitcroft, Skinner, et al., 1957
Flitcroft, T.; Skinner, H.A.; Whiting, M.C.,
Heats of hydrogenation Part 1.-Dodeca-3:9 and -5:7 Diynes,
Trans. Faraday Soc., 1957, 53, 784-790. [all data]
Roth and Rist-Schumacher, 1944
Roth, W.A.; Rist-Schumacher, E.,
Beitrag zur thermochemie der sulfonsauren und saurechlorid,
Z. Electrochem., 1944, 50, 7-9. [all data]
Notes
Go To: Top, Reaction thermochemistry data, IR Spectrum, References
- Symbols used in this document:
ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.
© 2026 by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved.
Copyright for NIST Standard Reference Data is governed by the Standard Reference Data Act.