1,3-Propanediol, 2-(hydroxymethyl)-2-methyl-
- Formula: C5H12O3
- Molecular weight: 120.1470
- IUPAC Standard InChIKey: QXJQHYBHAIHNGG-UHFFFAOYSA-N
- CAS Registry Number: 77-85-0
- 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: Ethane, 1,1,1-tris(hydroxymethyl)-; Methriol; Methyltrimethanolmethane; Metriol; Trimet; Trimethylolethane; Tris(hydroxymethyl)ethane; TME; 1,1,1-Trimethanolethane; 1,1,1-Trimethylolethane; 1,1,1-Tris(hydroxymethyl)ethane; 1,1,1-Tris(methylol)ethane; 2-(Hydroxymethyl)-2-methyl-1,3-propanediol; NSC 65581; Pentaglycerine; ethylidynetrimethanol
- 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, IR Spectrum, 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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
CAL - James S. Chickos, William E. Acree, Jr., Joel F. Liebman, Students of Chem 202 (Introduction to the Literature of Chemistry), University of Missouri -- St. Louis
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tfus | 473.7 | K | N/A | Suenaga, Matsuo, et al., 1990 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.1 K; TRC |
Tfus | 470. | K | N/A | Murrill and Breed, 1970 | Crystal phase 1 phase; Uncertainty assigned by TRC = 2. K; TRC |
Tfus | 471.3 | K | N/A | Derfer, Greenlee, et al., 1949 | Uncertainty assigned by TRC = 0.4 K; TRC |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
1.13 | 474.4 | N/A | Salud, López, et al., 1999 | AC |
1.29 | 470. | N/A | Domalski and Hearing, 1996 | AC |
1.1 | 472.4 | DSC | Granzow, 1996 | AC |
1.1 | 473.7 | DSC | Suenaga, Matsuo, et al., 1990, 2 | Based on data from 353. to 483. K.; AC |
Entropy of fusion
ΔfusS (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
15.65 | 354. | Domalski and Hearing, 1996 | CAL |
2.734 | 470. |
Enthalpy of phase transition
ΔHtrs (kcal/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
5.0765 | 358.2 | crystaline, II | crystaline, I | Suenaga, Matsuo, et al., 1990, 2 | DH |
1.123 | 474. | crystaline, I | liquid | Suenaga, Matsuo, et al., 1990, 2 | DH |
5.5387 | 354. | crystaline, II | crystaline, I | Murrill and Breed, 1970, 2 | DH |
1.286 | 470. | crystaline, I | liquid | Murrill and Breed, 1970, 2 | DH |
Entropy of phase transition
ΔStrs (cal/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
14.17 | 358.2 | crystaline, II | crystaline, I | Suenaga, Matsuo, et al., 1990, 2 | DH |
2.36 | 474. | crystaline, I | liquid | Suenaga, Matsuo, et al., 1990, 2 | DH |
15.6 | 354. | crystaline, II | crystaline, I | Murrill and Breed, 1970, 2 | DH |
2.70 | 470. | crystaline, I | liquid | Murrill and Breed, 1970, 2 | DH |
IR Spectrum
Go To: Top, Phase change data, 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 by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Gas Phase Spectrum
Notice: This spectrum may be better viewed with a Javascript and HTML 5 enabled browser.
Notice: Concentration information is not available for this spectrum and, therefore, molar absorptivity values cannot be derived.
Additional Data
View image of digitized spectrum (can be printed in landscape orientation).
View spectrum image in SVG format.
Download spectrum in JCAMP-DX format.
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 | Sadtler Research Labs Under US-EPA Contract |
State | gas |
Mass spectrum (electron ionization)
Go To: Top, Phase change data, IR Spectrum, 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-1452 |
NIST MS number | 229703 |
References
Go To: Top, Phase change data, IR Spectrum, 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.
Suenaga, Matsuo, et al., 1990
Suenaga, K.; Matsuo, T.; Suga, H.,
Heat Capacity and Phase transition of Trimethylolethane,
Thermochim. Acta, 1990, 163, 263. [all data]
Murrill and Breed, 1970
Murrill, E.; Breed, L.W.,
Solid-solid phase transitions determined by differential scanning calorime- try. Part I. Tetrahedral Substances.,
Thermochim. Acta, 1970, 1, 239. [all data]
Derfer, Greenlee, et al., 1949
Derfer, J.M.; Greenlee, K.W.; Boord, C.E.,
A New Synthesis of Monoalkylcyclobutanes: Reduction of Neopentyl Type Tribromides,
J. Am. Chem. Soc., 1949, 71, 175. [all data]
Salud, López, et al., 1999
Salud, Josep; López, David O.; Barrio, Maria; Tamarit, Josep Ll.,
Two-component systems of isomorphous orientationally disordered crystals. Part 1 Packing of the mixed crystals,
J. Mater. Chem., 1999, 9, 4, 909-916, https://doi.org/10.1039/a808258h
. [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]
Granzow, 1996
Granzow, Bettina,
Hydrogen bonding and phase transitions of a group of alcohols derived from 2,2-dimethylpropane,
Journal of Molecular Structure, 1996, 381, 1-3, 127-131, https://doi.org/10.1016/0022-2860(96)09232-0
. [all data]
Suenaga, Matsuo, et al., 1990, 2
Suenaga, K.; Matsuo, T.; Suga, H.,
Heat capacity and phase transition of trimethylolethane,
Thermochim. Acta, 1990, 163, 263-270. [all data]
Murrill and Breed, 1970, 2
Murrill, E.; Breed, L.,
Solid-solid phase transitions determined by differential scanning calorimetry,
Thermochim. Acta, 1970, 1, 239-246. [all data]
Notes
Go To: Top, Phase change data, IR Spectrum, Mass spectrum (electron ionization), References
- Symbols used in this document:
Tfus Fusion (melting) point ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion - 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.