Hexane, 2,2,4-trimethyl-
- Formula: C9H20
- Molecular weight: 128.2551
- IUPAC Standard InChIKey: AFTPEBDOGXRMNQ-UHFFFAOYSA-N
- CAS Registry Number: 16747-26-5
- 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: 2,2,4-Trimethylhexane
- Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- Options:
Data at NIST subscription sites:
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.
Phase change data
Go To: Top, Mass spectrum (electron ionization), References, Notes
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 | 399.6 ± 0.4 | K | AVG | N/A | Average of 6 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 153.15 | K | N/A | Streiff, Zimmerman, et al., 1948 | Uncertainty assigned by TRC = 0.4 K; TRC |
Tfus | 149.75 | K | N/A | Howard, Mears, et al., 1947 | Uncertainty assigned by TRC = 0.2 K; TRC |
Tfus | 149.77 | K | N/A | Brooks, 1943 | Uncertainty assigned by TRC = 1.5 K; TRC |
Tfus | 143.62 | K | N/A | Brooks, Cleaton, et al., 1937 | Uncertainty assigned by TRC = 0.6 K; identification somewhat uncertain; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 9.73 | kcal/mol | N/A | Reid, 1972 | AC |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
9.44 | 303. | A | Stephenson and Malanowski, 1987 | Based on data from 288. to 410. K.; AC |
9.80 | 278. | A | Stephenson and Malanowski, 1987 | Based on data from 238. to 393. K.; AC |
9.68 | 288. | IP | Osborn and Douslin, 1974 | Based on data from 238. to 303. K.; AC |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (atm)
T = temperature (K)
View plot Requires a JavaScript / HTML 5 canvas capable browser.
Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
238. to 303. | 4.30913 | 1528.134 | -42.976 | Osborn and Douslin, 1974 | Coefficents calculated by NIST from author's data. |
Mass spectrum (electron ionization)
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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
Notice: This spectrum may be better viewed with a Javascript and HTML 5 enabled browser.
Additional Data
View image of digitized spectrum (can be printed in landscape orientation).
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. |
---|---|
Origin | Japan AIST/NIMC Database- Spectrum MS-NW-4572 |
NIST MS number | 233018 |
References
Go To: Top, Phase change data, Mass spectrum (electron ionization), Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Streiff, Zimmerman, et al., 1948
Streiff, A.J.; Zimmerman, J.C.; Soule, L.F.; Butt, M.T.; Sedlak, V.A.; Willingham, C.B.; Rossini, F.D.,
Purification, Purity, and Freezing Points of 30 Hydrocarbons of the API-Standard and API-NBS Series,
J. Res. Natl. Bur. Stand. (U. S.), 1948, 41, 323. [all data]
Howard, Mears, et al., 1947
Howard, F.L.; Mears, T.W.; Fookson, A.; Pomerantz, P.; Brooks, D.B.,
Preparation and physical properties of several aliphatic hydrocarbons and intermediates,
J. Res. Natl. Bur. Stand. (U. S.), 1947, 38, 365. [all data]
Brooks, 1943
Brooks, D.B.,
, Natl. Advis. Comm. Aeronaut., Rep. Natl. Bur. Stand., Was hington, D. C., 1943. [all data]
Brooks, Cleaton, et al., 1937
Brooks, D.B.; Cleaton, R.B.; Carter, F.R.,
Paraffin Hydrocarbons Isolated from Crude Synthetic Isooctane (2,2,4-Trimethylpentane),
J. Res. Natl. Bur. Stand. (U. S.), 1937, 19, 319. [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]
Osborn and Douslin, 1974
Osborn, Ann G.; Douslin, Donald R.,
Vapor-pressure relations for 15 hydrocarbons,
J. Chem. Eng. Data, 1974, 19, 2, 114-117, https://doi.org/10.1021/je60061a022
. [all data]
Notes
Go To: Top, Phase change data, Mass spectrum (electron ionization), 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
- 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.