Trimethyl phosphite
- Formula: C3H9O3P
- Molecular weight: 124.0755
- IUPAC Standard InChI: InChI=1S/C3H9O3P/c1-4-7(5-2)6-3/h1-3H3
- IUPAC Standard InChIKey: CYTQBVOFDCPGCX-UHFFFAOYSA-N
- CAS Registry Number: 121-45-9
- 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: Phosphorous acid, trimethyl ester; Trimethoxyphosphine; P(OCH3)3; Methyl phosphite ((MeO)3P); Trimethoxyfosfin; Trimethylfosfit; UN 2329; Trimethyl ester of phosphorous acid; NSC 6513
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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 by: William E. Acree, Jr., James S. Chickos
Enthalpy of vaporization
| ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 42.5 | 317. | EB | Dutt, Kahol, et al., 1990 | Based on data from 302. to 342. K. |
| 32.8 | 437. | A | Stephenson and Malanowski, 1987 | Based on data from 422. to 494. K. |
Gas Chromatography
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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
Van Den Dool and Kratz RI, non-polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | SE-54 | 689. | Kostiainen, 2000 | 25. m/0.32 mm/0.25 μm, He, 40. C @ 1. min, 10. K/min, 280. C @ 10. min |
Normal alkane RI, non-polar column, custom temperature program
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | DB-5 MS | 688. | Tsunoda, 2005 | 30. m/0.25 mm/0.25 μm, Helium; Program: 45 0C (2 min) 8 0C/min -> 125 0C 15 0C/min -> 280 0C |
References
Go To: Top, Phase change data, Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Dutt, Kahol, et al., 1990
Dutt, N.V.K.; Kahol, A.P.; Reddy, P.J.; Raghunandanan, K.S.,
Isobaric vapor-liquid equilibria for the binary systems of benzene/triethylamine, benzene/trimethyl phosphite, and triethylamine/trimethyl phosphite,
J. Chem. Eng. Data, 1990, 35, 2, 114-117, https://doi.org/10.1021/je00060a004
. [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]
Kostiainen, 2000
Kostiainen, O.,
Gas Chromatography in Screening of Chemicals Related to the Chemical Weapons Convention
in Encyclopedia of Analytical Chemistry, Meyers, R.A., ed(s)., John Wiley Sons Ltd, Chichester, 2000, 963-979. [all data]
Tsunoda, 2005
Tsunoda, N.,
The sarin incidents in Japan and mass spectrometry,
J. MAss Spectrom. Soc. Japan, 2005, 53, 3, 157-163, https://doi.org/10.5702/massspec.53.157
. [all data]
Notes
Go To: Top, Phase change data, Gas Chromatography, References
- Symbols used in this document:
ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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