1,2-Butadiene
- Formula: C4H6
- Molecular weight: 54.0904
- IUPAC Standard InChIKey: QNRMTGGDHLBXQZ-UHFFFAOYSA-N
- CAS Registry Number: 590-19-2
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Allene, methyl-; Methylallene; CH2=C=CHCH3; Buta-1,2-diene
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Gas phase thermochemistry data
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | 38.77 ± 0.14 | kcal/mol | Cm | Prosen, Maron, et al., 1951 | ALS |
ΔfH°gas | 39.53 ± 0.28 | kcal/mol | Ccb | Prosen, Maron, et al., 1949 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°gas | -619.93 ± 0.13 | kcal/mol | Cm | Prosen, Maron, et al., 1951 | Corresponding ΔfHºgas = 38.78 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
ΔcH°gas | -620.69 ± 0.28 | kcal/mol | Ccb | Prosen, Maron, et al., 1949 | Corresponding ΔfHºgas = 39.54 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
Constant pressure heat capacity of gas
Cp,gas (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
8.564 | 50. | Thermodynamics Research Center, 1997 | Recommended values are in close agreement with those obtained from earlier statistical thermodynamics calculation [ Kilpatrick J.E., 1949].; GT |
10.91 | 100. | ||
13.00 | 150. | ||
14.94 | 200. | ||
17.93 | 273.15 | ||
19.00 | 298.15 | ||
19.08 | 300. | ||
23.33 | 400. | ||
27.185 | 500. | ||
30.502 | 600. | ||
33.351 | 700. | ||
35.80 | 800. | ||
38.19 | 900. | ||
39.79 | 1000. | ||
41.42 | 1100. | ||
42.81 | 1200. | ||
44.02 | 1300. | ||
45.08 | 1400. | ||
45.98 | 1500. |
Condensed phase thermochemistry data
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
S°liquid | 49.281 | cal/mol*K | N/A | Aston and Szasz, 1947 |
Constant pressure heat capacity of liquid
Cp,liquid (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
29.350 | 290. | Aston and Szasz, 1947 | T = 14 to 282 K. |
Phase change data
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 284. | K | N/A | Majer and Svoboda, 1985 | |
Tboil | 291.7 | K | N/A | Feugeas and Giusti, 1968 | Uncertainty assigned by TRC = 2. K; TRC |
Tboil | 284.06 | K | N/A | Streiff, Murphy, et al., 1946 | Uncertainty assigned by TRC = 0.3 K; TRC |
Tboil | 283.5 | K | N/A | Hurd and Meinert, 1931 | Uncertainty assigned by TRC = 0.5 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 136.940 | K | N/A | Streiff, Murphy, et al., 1947 | Uncertainty assigned by TRC = 0.05 K; TRC |
Tfus | 136.960 | K | N/A | Streiff, Murphy, et al., 1947 | Uncertainty assigned by TRC = 0.02 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 136.920 | K | N/A | Aston and Szasz, 1947, 2 | Uncertainty assigned by TRC = 0.06 K; TRC |
Ttriple | 136.950 | K | N/A | Aston and Szasz, 1947, 2 | Uncertainty assigned by TRC = 0.05 K; TRC |
Ttriple | 136.94 | K | N/A | Tooke and Aston, 1945 | Uncertainty assigned by TRC = 0.08 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 5.660 | kcal/mol | N/A | Majer and Svoboda, 1985 | |
ΔvapH° | 5.71 | kcal/mol | N/A | Reid, 1972 | AC |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
5.8850 | 273.24 | N/A | Aston and Szasz, 1947 | P = 66.41 kPa; DH |
5.741 | 284. | N/A | Majer and Svoboda, 1985 | |
6.05 | 276. | A | Stephenson and Malanowski, 1987 | Based on data from 243. to 291. K.; AC |
6.31 | 228. | A | Stephenson and Malanowski, 1987 | Based on data from 204. to 243. K.; AC |
5.88 ± 0.06 | 273.25 | C | Aston and Szasz, 1947, 3 | ALS |
5.88 ± 0.02 | 273. | C | Aston and Szasz, 1947 | AC |
6.02 | 276. | N/A | Stull, 1947 | Based on data from 184. to 291. K.; AC |
Entropy of vaporization
ΔvapS (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
21.54 | 273.24 | Aston and Szasz, 1947 | P; DH |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (atm)
T = temperature (K)
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Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
184. to 291.7 | 3.77588 | 941.601 | -42.565 | Stull, 1947 | Coefficents calculated by NIST from author's data. |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
1.6638 | 136.92 | Aston and Szasz, 1947 | DH |
1.66 | 136.9 | Domalski and Hearing, 1996 | AC |
Entropy of fusion
ΔfusS (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
12.15 | 136.92 | Aston and Szasz, 1947 | DH |
Reaction thermochemistry data
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
B - John E. Bartmess
ALS - 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
C4H5- + =
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 384.3 ± 2.1 | kcal/mol | G+TS | N/A | gas phase; Relative to dGacid(MeOH)= 375. Acid: MeCH=C=CH2; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 376.2 ± 2.0 | kcal/mol | IMRE | N/A | gas phase; Relative to dGacid(MeOH)= 375. Acid: MeCH=C=CH2; B |
By formula: C4H6 = C4H6
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 12.78 ± 0.16 | kcal/mol | Ccb | Prosen, Maron, et al., 1949 | gas phase; ALS |
IR Spectrum
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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: Concentration information is not available for this spectrum and, therefore, molar absorptivity values cannot be derived.
Additional Data
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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 | NIST Mass Spectrometry Data Center |
State | gas |
Instrument | HP-GC/MS/IRD |
Mass spectrum (electron ionization)
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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
Spectrum
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Additional Data
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Due to licensing restrictions, this spectrum cannot be downloaded.
Owner | NIST Mass Spectrometry Data Center Collection (C) 2014 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
---|---|
NIST MS number | 18905 |
UV/Visible spectrum
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Victor Talrose, Eugeny B. Stern, Antonina A. Goncharova, Natalia A. Messineva, Natalia V. Trusova, Margarita V. Efimkina
Spectrum
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Additional Data
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Source | Jones and Taylor, 1955 |
---|---|
Owner | INEP CP RAS, NIST OSRD Collection (C) 2007 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
Origin | INSTITUTE OF ENERGY PROBLEMS OF CHEMICAL PHYSICS, RAS |
Source reference | RAS UV No. 2454 |
Instrument | Beckman DU |
Melting point | -136.2 |
Boiling point | 10.9 |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Prosen, Maron, et al., 1951
Prosen, E.J.; Maron, F.W.; Rossini, F.D.,
Heats of combustion, formation, and insomerization of ten C4 hydrocarbons,
J. Res. NBS, 1951, 46, 106-112. [all data]
Prosen, Maron, et al., 1949
Prosen, E.J.; Maron, F.W.; Rossini, F.D.,
Heat of isomerization of the two butadienes,
J. Res. NBS, 1949, 42, 269-275. [all data]
Thermodynamics Research Center, 1997
Thermodynamics Research Center,
Selected Values of Properties of Chemical Compounds., Thermodynamics Research Center, Texas A&M University, College Station, Texas, 1997. [all data]
Kilpatrick J.E., 1949
Kilpatrick J.E.,
Heats, equilibrium constants, and free energies of formation of the C3 to C5 diolefins, styrene, and the methylstyrenes,
J. Res. Nat. Bur. Stand., 1949, 42, 225-240. [all data]
Aston and Szasz, 1947
Aston, J.G.; Szasz, G.J.,
The thermodynamics of butadiene-1,2 from calorimetric and spectroscopic data,
J. Am. Chem. Soc., 1947, 69, 3108-3114. [all data]
Majer and Svoboda, 1985
Majer, V.; Svoboda, V.,
Enthalpies of Vaporization of Organic Compounds: A Critical Review and Data Compilation, Blackwell Scientific Publications, Oxford, 1985, 300. [all data]
Feugeas and Giusti, 1968
Feugeas, C.; Giusti, G.L.,
C. R. Acad. Sci. Paris, Ser. C, 1968, 267, 84. [all data]
Streiff, Murphy, et al., 1946
Streiff, A.J.; Murphy, E.T.; Cahill, J.C.; Soule, L.F.; Sedlak, V.A.; Willingham, C.B.; Rossini, F.D.,
, Am. Pet. Inst. Res. Proj. 6, unpublished, Natl. Bur. Stand., 1946. [all data]
Hurd and Meinert, 1931
Hurd, C.D.; Meinert, R.N.,
Synthesis and pyrolysis of methylallene and ethylacetylene,
J. Am. Chem. Soc., 1931, 53, 289-300. [all data]
Streiff, Murphy, et al., 1947
Streiff, A.J.; Murphy, E.T.; Zimmerman, J.C.; Soule, L.F.; Sedlak, V.A.; Willingham, C.B.; Rossini, F.D.,
Purification, purity, and freezing points of n-decane, 4 alkylcyclopentanes 9 alkylcyclohexanes, 2 monoolefins, 1,2-butadiene, and 2-butyne of the API-standard and API-NBS series.,
J. Res. Natl. Bur. Stand. (U. S.), 1947, 39, 321. [all data]
Aston and Szasz, 1947, 2
Aston, J.G.; Szasz, G.J.,
The Thermodynamics of Butadiene-1,2 from Calorimetric and Spectroscopic Data,
J. Am. Chem. Soc., 1947, 69, 3108. [all data]
Tooke and Aston, 1945
Tooke, J.W.; Aston, J.G.,
Solid Solutions in Hydrocarbon Systems,
J. Am. Chem. Soc., 1945, 67, 2275. [all data]
Reid, 1972
Reid, Robert C.,
Handbook on vapor pressure and heats of vaporization of hydrocarbons and related compounds, R. C. Wilhort and B. J. Zwolinski, Texas A Research Foundation. College Station, Texas(1971). 329 pages.$10.00,
AIChE J., 1972, 18, 6, 1278-1278, https://doi.org/10.1002/aic.690180637
. [all data]
Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw,
Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2
. [all data]
Aston and Szasz, 1947, 3
Aston, J.G.; Szasz, G.J.,
The thermodynamics of butadiene-1,2 from calorimetric and spectroscopic data,
J. Am. Chem. Soc., 1947, 69, 3108-31. [all data]
Stull, 1947
Stull, Daniel R.,
Vapor Pressure of Pure Substances. Organic and Inorganic Compounds,
Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022
. [all data]
Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D.,
Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III,
J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985
. [all data]
Jones and Taylor, 1955
Jones, L.C., Jr.; Taylor, L.W.,
Far ultraviolet absorption spectra of unsaturated and aromatic hydrocarbons,
Anal. Chem., 1955, 27, 2, 228-237. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, References
- Symbols used in this document:
Cp,gas Constant pressure heat capacity of gas Cp,liquid Constant pressure heat capacity of liquid S°liquid Entropy of liquid at standard conditions Tboil Boiling point Tfus Fusion (melting) point Ttriple Triple point temperature ΔcH°gas Enthalpy of combustion of gas at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions ΔvapS Entropy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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