Heneicosane, 11-decyl-

Formula: C₃₁H₆₄
Molecular weight: 436.8399
IUPAC Standard InChI: InChI=1S/C31H64/c1-4-7-10-13-16-19-22-25-28-31(29-26-23-20-17-14-11-8-5-2)30-27-24-21-18-15-12-9-6-3/h31H,4-30H2,1-3H3
IUPAC Standard InChIKey: BCWYKEQUGMQGAP-UHFFFAOYSA-N
CAS Registry Number: 55320-06-4
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: 11-Decylheneicosane; 11-n-Decylheneicosane
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Phase change data

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Data compiled as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity	Value	Units	Method	Reference	Comment
T_fus	283.2	K	N/A	Foehr and Fenske, 1949	Uncertainty assigned by TRC = 2. K; TRC
T_fus	282.2	K	N/A	Schiessler, 1947	Uncertainty assigned by TRC = 1. K; TRC
T_fus	281.850	K	N/A	Parks, West, et al., 1946	Uncertainty assigned by TRC = 0.4 K; TRC
T_fus	281.9	K	N/A	Anonymous, 1944	Uncertainty assigned by TRC = 0.5 K; TRC
T_fus	282.4	K	N/A	Naylor, 1943	Uncertainty assigned by TRC = 1. K; TRC
Quantity	Value	Units	Method	Reference	Comment
T_triple	282.34	K	N/A	Fischl, Naylor, et al., 1945	Uncertainty assigned by TRC = 0.1 K; TRC
Quantity	Value	Units	Method	Reference	Comment
Δ_vapH°	34.0 ± 0.2	kcal/mol	E	Parks, West, et al., 1946, 2	Heat of vaporization estimated by Cox and Pilcher, 1970; ALS

Enthalpy of vaporization

Δ_vapH (kcal/mol)	Temperature (K)	Method	Reference	Comment
26.51	305.	A,MG	Stephenson and Malanowski, 1987	Based on data from 298. to 313. K. See also Schiessler and Whitmore, 1955.; AC

Enthalpy of fusion

Δ_fusH (kcal/mol)	Temperature (K)	Reference	Comment
17.019	282.34	Fischl, Naylor, et al., 1945, 2	Stanford data give H = 71044 J/mol; Tm 282.2 K.; DH
17.00	282.3	Domalski and Hearing, 1996	AC

Entropy of fusion

Δ_fusS (cal/mol*K)	Temperature (K)	Reference	Comment
60.277	282.34	Fischl, Naylor, et al., 1945, 2	Stanford; DH

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:

References

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Foehr and Fenske, 1949
Foehr, E.G.; Fenske, M.R., Magneto-optic Rotation of Hydrocarbons, Ind. Eng. Chem., 1949, 41, 1956. [all data]

Schiessler, 1947
Schiessler, R.W., , Am. Pet. Inst. Res. Proj. 42, Twelfth Meeting, 1947. [all data]

Parks, West, et al., 1946
Parks, G.S.; West, T.J.; Naylor, B.F.; Fujii, P.S.; McClaine, L.A., Thermal Data on Organic Compounds XXIII. Modern Combustion Data for Fourteen Hydrocarbons and Five Polyhydric Alcohols, J. Am. Chem. Soc., 1946, 68, 2524. [all data]

Anonymous, 1944
Anonymous, R., , Sunbury Rep., Anglo-Iranian Oil Co., March 22, 1944. [all data]

Naylor, 1943
Naylor, , Thesis, Stanford Univ., 1943. [all data]

Fischl, Naylor, et al., 1945
Fischl, F.B.; Naylor, B.F.; Ziemer, C.W.; Parks, G.S.; Aston, J.G., The Heat Capacity, Heat of Fusion and Entropy of 11-n-Dodecylheneicosane, J. Am. Chem. Soc., 1945, 67, 2075. [all data]

Parks, West, et al., 1946, 2
Parks, G.S.; West, T.J.; Naylor, B.F.; Fujii, P.S.; McClaine, L.A., Thermal data on organic compounds. XXIII. Modern combustion data for fourteen hydrocarbons and five polyhydroxy alcohols, J. Am. Chem. Soc., 1946, 68, 2524-2527. [all data]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [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]

Schiessler and Whitmore, 1955
Schiessler, R.W.; Whitmore, F.C., Properties of High Molecular Weight Hydrocarbons, Ind. Eng. Chem., 1955, 47, 8, 1660-1665, https://doi.org/10.1021/ie50548a054 . [all data]

Fischl, Naylor, et al., 1945, 2
Fischl, F.B.; Naylor, B.G.; Ziemer, C.W.; Parks, G.S.; Aston, J.G., The heat capacity, heat of fusion and entropy of 11-n-decylheneicosane, J. Am. Chem. Soc., 1945, 67, 2075-2079. [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]

Notes

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Symbols used in this document:

T_fus	Fusion (melting) point
T_triple	Triple point temperature
Δ_fusH	Enthalpy of fusion
Δ_fusS	Entropy of fusion
Δ_vapH	Enthalpy of vaporization
Δ_vapH°	Enthalpy of vaporization at standard conditions

Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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