Chloral
- Formula: C2HCl3O
- Molecular weight: 147.388
- IUPAC Standard InChI: InChI=1S/C2HCl3O/c3-2(4,5)1-6/h1H
- IUPAC Standard InChIKey: HFFLGKNGCAIQMO-UHFFFAOYSA-N
- CAS Registry Number: 75-87-6
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Acetaldehyde, trichloro-; Anhydrous chloral; Trichloroacetaldehyde; Trichloroethanal; CCl3CHO; Trichloracetaldehyde; 2,2,2-Trichloroethanal; Cloralio; Grasex; Rcra waste number U034; 2,2,2-Trichloroacetaldehyde; Acetaldehyde, 2,2,2-trichloro-
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Condensed phase thermochemistry data
Go To: Top, Henry's Law data, Gas Chromatography, 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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°liquid | -52.13 | kcal/mol | Cm | Pritchard and Skinner, 1950 | Heat of hydrolysis; ALS |
Constant pressure heat capacity of liquid
| Cp,liquid (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 36.21 | 298. | von Reis, 1881 | T = 294 to 383 K.; DH |
Henry's Law data
Go To: Top, Condensed phase thermochemistry data, Gas Chromatography, 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: Rolf Sander
Henry's Law constant (water solution)
kH(T) = k°H exp(d(ln(kH))/d(1/T) ((1/T) - 1/(298.15 K)))
k°H = Henry's law constant for solubility in water at 298.15 K (mol/(kg*bar))
d(ln(kH))/d(1/T) = Temperature dependence constant (K)
| k°H (mol/(kg*bar)) | d(ln(kH))/d(1/T) (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 340000. | 3500. | M | N/A | missing citation list effective values that take into account hydration of the aldehydes: kH = ([RCHO] + [RCH(OH)2]) / p(RCHO) |
Gas Chromatography
Go To: Top, Condensed phase thermochemistry data, Henry's Law 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
Kovats' RI, non-polar column, isothermal
| Column type | Active phase | Temperature (C) | I | Reference | Comment |
|---|---|---|---|---|---|
| Packed | SE-30 | 150. | 715. | Tiess, 1984 | Ar, Gas Chrom Q (80-100 mesh); Column length: 3. m |
Normal alkane RI, non-polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Packed | SE-30 | 695. | MHA, 9999 | Nitrogen, Chromosorb G AW DMCS (80-100 mesh); Column length: 2. m; Tstart: 100. C; Tend: 300. C |
References
Go To: Top, Condensed phase thermochemistry data, Henry's Law data, Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Pritchard and Skinner, 1950
Pritchard, H.O.; Skinner, H.A.,
The heats of hydrolysis of chloral and bromal, and the C-C bond dissociation energies in chloral and bromal,
J. Am. Chem. Soc., 1950, 1928-1931. [all data]
von Reis, 1881
von Reis, M.A.,
Die specifische Wärme flüssiger organischer Verbindungen und ihre Beziehung zu deren Moleculargewicht,
Ann. Physik [3], 1881, 13, 447-464. [all data]
Tiess, 1984
Tiess, D.,
Gaschromatographische Retentionsindices von 125 leicht- bis mittelflüchtigen organischen Substanzen toxikologisch-analytischer Relevanz auf SE-30,
Wiss. Z. Wilhelm-Pieck-Univ. Rostock Math. Naturwiss. Reihe, 1984, 33, 6-9. [all data]
MHA, 9999
MHA, Directorate of ForensicScience.,
Forensic Toxicology, 9999. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Henry's Law data, Gas Chromatography, References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid d(ln(kH))/d(1/T) Temperature dependence parameter for Henry's Law constant k°H Henry's Law constant at 298.15K ΔfH°liquid Enthalpy of formation of liquid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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