Ethene, homopolymer
- Monomer Formula: CH2
- Monomer Molecular weight: 14.0266
- CAS Registry Number: 9002-88-4
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Polymer; Polyethylen wax; polyethylene wax; Ersatzbrennstoff (EBS); high density polyethylene; Medium Density Polyethylene; Polyethylene (PE); Epolene Wax; Polyethylene; polyethyleen foil; ethylenpolymere
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Condensed phase thermochemistry data
Go To: Top, Phase change 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: Eugene S. Domalski and Elizabeth D. Hearing
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| S°solid,1 bar | 5.9 ± 0.6 | cal/mol*K | AVG | N/A | Average of 14 out of 15 values; Individual data points |
Constant pressure heat capacity of solid
| Cp,solid (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 6.19 | 298.15 | Steele, 1978 | |
| 5.968 | 298.15 | Chang, 1976 | T = 5 to 380 K. Value per monomer unit. |
| 7.696 | 298.15 | Chang, Westrum, et al., 1975 | T = 5 to 350 K. Values per CH2 unit. |
| 5.925 | 298.15 | Chang, Westrum, et al., 1975 | T = 5 to 350 K. Values per CH2 unit. |
| 5.402 | 298.15 | Chang, 1974 | T = 5 to 360 K. Value per monomer unit. |
| 5.492 | 298.15 | Chang, 1974 | T = 5 to 360 K. Value per monomer unit. |
| 5.727 | 298.15 | Chang, 1974 | T = 5 to 360 K. Value per monomer unit. |
| 7.218 | 298.15 | Chang and Bestul, 1973 | T = 2 to 360 K. Values per unit formula weight. |
| 7.232 | 298.15 | Chang and Bestul, 1973 | T = 2 to 360 K. |
| 6.138 | 298.15 | Chang and Bestul, 1973 | T = 2 to 360 K. Values per unit formula weight. |
| 5.229 | 298.15 | Wunderlich, 1965 | T = 180 to 410 K. Values per gram formula weight. |
| 6.972 | 300. | Passaglia and Kevorkian, 1963 | T = 90 to 415 K. |
| 5.848 | 300. | Passaglia and Kevorkian, 1963 | T = 90 to 433 K. |
| 6.283 | 298.15 | Dainton, Evans, et al., 1962 | T = 20 to 310 K. Data for "Marlex 50" (low pressure) polythene. |
| 6.219 | 298.15 | Dainton, Evans, et al., 1962 | T = 20 to 310 K. Data for "Rigidex 50" (low pressure) polythene. |
| 7.761 | 298.15 | Dainton, Evans, et al., 1962 | T = 90 to 300 K. Data for "W.N.C. 18" (high pressure) polythene. |
| 7.574 | 300. | Warfield and Petree, 1962 | T = 10 to 320 K. Calculated. Conventional high pressure polyethylene. |
| 5.863 | 300. | Wunderlich, 1962 | T = 1 to 420 K. Extrapolated value to 100% crystalline phase. |
| 7.851 | 300. | Wunderlich, 1962 | amorphous phase; T = 1 to 420 K. Extrapolated value to 100% amorphous phase. |
| 7.574 | 300. | Warfield and Petree, 1961 | T = 10 to 320 K. Interpolated data. |
| 5.83 | 270. | Sochava and Trapeznikova, 1957 | T = 58 to 270 K. Cp value is unsmoothed experimental datum. |
Phase change data
Go To: Top, Condensed phase 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: Eugene S. Domalski and Elizabeth D. Hearing
Enthalpy of fusion
| ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 0.9271 | 415. | Wunderlich, 1962 | |
| 0.9271 | 415. | Wunderlich, 1962 |
Entropy of fusion
| ΔfusS (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 2.23 | 415. | Wunderlich, 1962 | |
| 2.23 | 415. | Wunderlich, 1962 |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Steele, 1978
Steele, W.V.,
The standard enthalpies of formation of a series of C7, bridged-ring hydrocarbons: norbornane, norbornene, nortricyclene, norbornadiene, and quadricyclane,
J. Chem. Thermodyn., 1978, 10, 919-927. [all data]
Chang, 1976
Chang, S-S.,
Heat capacities of polyethylene IV. High molecular weight linear polyethylene,
J. Res., 1976, NBS A80, 51-57. [all data]
Chang, Westrum, et al., 1975
Chang, S-S.; Westrum, E.F., Jr.; Carlson, H.G.,
Heat capacities of polyethylene III. One linear and one branched sample from 5 to 350 K,
J. Res., 1975, NBS 79A, 437-441. [all data]
Chang, 1974
Chang, S.S.,
Heat capacities of polyethylene from 2 to 360 K. II. Two high density linear polyethylene samples and thermodynamic properties of crystalline linear polyethylene,
J. Res., 1974, NBS A 78, 387-400. [all data]
Chang and Bestul, 1973
Chang, S.S.; Bestul, A.B.,
Heat capacities of polyethylene from 2 to 360K. I. Standard samples of linear and branched polyethylene whole polymer,
J. Res., 1973, NBS 77A, 395-405. [all data]
Wunderlich, 1965
Wunderlich, B.,
Specific heat of polyethylene single crystals,
J. Phys. Chem., 1965, 69, 2078-2081. [all data]
Passaglia and Kevorkian, 1963
Passaglia, E.; Kevorkian, H.K.,
The heat capacity of linear and branched polyethylene,
J. Appl. Poly. Sci., 1963, 7, 119-132. [all data]
Dainton, Evans, et al., 1962
Dainton, F.S.; Evans, D.M.; Hoare, F.E.; Melia, T.P.,
Thermodynamic functions of linear high polymers. Part III. Polyethylene,
Polymer, 1962, 3, 277-285. [all data]
Warfield and Petree, 1962
Warfield, R.W.; Petree, M.C.,
Thermodynamic properties of polyethylene,
Die Makromolekulare Chem., 1962, 51, 113-122. [all data]
Wunderlich, 1962
Wunderlich, B.,
Motion in polyethylene. I. Temperature and crystallinity dependence of the specific heat,
J. Chem. Phys., 1962, 37, 1203-1207. [all data]
Warfield and Petree, 1961
Warfield, R.W.; Petree, M.C.,
Thermodynamic functions of polyethylene,
Chem. Ind. (London), 1961, 1961, 1571-1572. [all data]
Sochava and Trapeznikova, 1957
Sochava, I.V.; Trapeznikova, O.N.,
Heat capacity of chain structures at low temperatures,
Dokl. Akad. Nauk, 1957, SSSR 113, 784-786. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, References
- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid S°solid,1 bar Entropy of solid at standard conditions (1 bar) ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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