Tetramethylammonium chloride
- Formula: C4H12ClN
- Molecular weight: 109.598
- IUPAC Standard InChIKey: OKIZCWYLBDKLSU-UHFFFAOYSA-M
- CAS Registry Number: 75-57-0
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: TMAC; Methanaminium, N,N,N-trimethyl-, chloride; Ammonium, tetramethyl-, chloride; USAF AN-8
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Condensed phase thermochemistry 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 by: Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
S°solid,1 bar | 45.581 | cal/mol*K | N/A | Chang and Westrum, 1962 |
Constant pressure heat capacity of solid
Cp,solid (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
37.510 | 298.15 | Chang and Westrum, 1962 | T = 5 to 350 K. |
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 by: Eugene S. Domalski and Elizabeth D. Hearing
Enthalpy of phase transition
ΔHtrs (kcal/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
2.367 | 536. | crystaline, II | crystaline, I | Murrill and Breed, 1970 | |
0.02780 | 75.76 | crystaline | Chang and Westrum, 1962 | ||
0.02591 | 184.85 | crystaline, II | crystaline, I | Chang and Westrum, 1962 | Transition over range 180 to 190 K. |
Entropy of phase transition
ΔStrs (cal/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
4.40 | 536. | crystaline, II | crystaline, I | Murrill and Breed, 1970 | |
0.368 | 75.76 | crystaline | Chang and Westrum, 1962 | ||
0.14 | 184.85 | crystaline, II | crystaline, I | Chang and Westrum, 1962 | Transition |
IR Spectrum
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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 by: Coblentz Society, Inc.
Condensed Phase Spectrum
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Notice: Except where noted, spectra from this collection were measured on dispersive instruments, often in carefully selected solvents, and hence may differ in detail from measurements on FTIR instruments or in other chemical environments. More information on the manner in which spectra in this collection were collected can be found here.
Notice: Concentration information is not available for this spectrum and, therefore, molar absorptivity values cannot be derived.
Additional Data
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Owner | COBLENTZ SOCIETY Collection (C) 2018 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
---|---|
Origin | WYANDOTTE CHEMICALS CORP., WYANDOTTE, MICHIGAN, USA |
Source reference | COBLENTZ NO. 432 |
Date | Not specified, most likely prior to 1970 |
Name(s) | tetramethyl-.lambda.<5>-azane hydrochloride |
State | SOLID (MULLS, KEL-F OIL FOR 2-7.5 AND MINERAL OIL FOR 7.5-16 MICRONS) |
Instrument | Not specified, most likely a prism, grating, or hybrid spectrometer. |
Resolution | 4 |
Sampling procedure | TRANSMISSION |
Data processing | DIGITIZED BY NIST FROM HARD COPY |
Melting point | 150-152 C DECOMPOSES |
Mass spectrum (electron ionization)
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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 by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
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Additional Data
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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 | Chemical Concepts |
NIST MS number | 159828 |
References
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Chang and Westrum, 1962
Chang, S.-S.; Westrum, E.F., Jr.,
Heat capacities and thermodynamic properties of two tetramethylammonium halides,
J. Chem. Phys., 1962, 36, 2420-2423. [all data]
Murrill and Breed, 1970
Murrill, E.; Breed, L.,
Solid-solid phase transitions determined by differential scanning calorimetry,
Thermochim. Acta, 1970, 1, 239-246. [all data]
Notes
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- 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) ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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