Cyclopentane, 1,1,3-trimethyl-
- Formula: C8H16
- Molecular weight: 112.2126
- IUPAC Standard InChI: InChI=1S/C8H16/c1-7-4-5-8(2,3)6-7/h7H,4-6H2,1-3H3
- IUPAC Standard InChIKey: OBKHYUIZSOIEPG-UHFFFAOYSA-N
- CAS Registry Number: 4516-69-2
- 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: 1,1,3-Trimethylcyclopentane
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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:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tboil | 378.1 ± 0.2 | K | AVG | N/A | Average of 11 out of 12 values; Individual data points |
| Quantity | Value | Units | Method | Reference | Comment |
| Tfus | 130.77 | K | N/A | Anonymous, 1954 | Uncertainty assigned by TRC = 0.2 K; TRC |
| Tfus | 130.69 | K | N/A | Anonymous, 1954, 2 | Uncertainty assigned by TRC = 0.2 K; TRC |
| Tfus | 130.69 | K | N/A | Anonymous, 1954, 2 | Uncertainty assigned by TRC = 0.15 K; TRC |
| Tfus | 130.71 | K | N/A | Slomp, 1951 | Uncertainty assigned by TRC = 0.15 K; TRC |
| Tfus | 130.71 | K | N/A | Streiff, Murphy, et al., 1947 | Uncertainty assigned by TRC = 0.12 K; TRC |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔvapH° | 8.60 | kcal/mol | N/A | Reid, 1972 | AC |
Enthalpy of vaporization
| ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 8.46 | 316. | A,MM | Stephenson and Malanowski, 1987 | See also Forziati, Norris, et al., 1949.; AC |
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 |
|---|---|---|---|---|---|
| 302.09 to 378.98 | 3.9303 | 1276.965 | -53.139 | Forziati, Norris, et al., 1949, 2 | Coefficents calculated by NIST from author's data. |
References
Go To: Top, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Anonymous, 1954
Anonymous, R.,
, Am. Pet. Inst. Res. Proj. 45, Tech. Rep. 13, Ohio State Univ., 1954. [all data]
Anonymous, 1954, 2
Anonymous, R.,
Am. Pet. Inst. Res. Proj. 6, 1954, Carnegie-Mellon Univ., March 1954. [all data]
Slomp, 1951
Slomp, G.,
, Ph.D. Thesis, Ohio State Univ., Columbus, OH, 1951. [all data]
Streiff, Murphy, et al., 1947
Streiff, A.J.; Murphy, E.T.; Cahill, J.C.; Flanagan, H.F.; Sedlak, V.A.; Willingham, C.B.; Rossini, F.D.,
Purification, Purity, and Freezing Points of 8 Nonanes, 11 Alkyl- cyclopentanes, 6 Alkylcyclohexanes, and 4 Butylbenzenes of the API-NBS Series,
J. Res. Natl. Bur. Stand. (U. S.), 1947, 38, 53. [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]
Forziati, Norris, et al., 1949
Forziati, Alphonse F.; Norris, William R.; Rossini, Frederick D.,
Vapor pressures and boiling points of sixty API-NBS hydrocarbons,
J. RES. NATL. BUR. STAN., 1949, 43, 6, 555-17, https://doi.org/10.6028/jres.043.050
. [all data]
Forziati, Norris, et al., 1949, 2
Forziati, A.F.; Norris, W.R.; Rossini, F.D.,
Vapor Pressures and Boiling Points of Sixty API-NBS Hydrocarbons,
J. Res. Natl. Bur. Stand. (U.S.), 1949, 43, 6, 555-563, https://doi.org/10.6028/jres.043.050
. [all data]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
Tboil Boiling point Tfus Fusion (melting) point ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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