sodium sulphate
- Formula: Na2O4S
- Molecular weight: 142.042
- IUPAC Standard InChI: InChI=1S/2Na.H2O4S/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2*+1;/p-2
- IUPAC Standard InChIKey: PMZURENOXWZQFD-UHFFFAOYSA-L
- CAS Registry Number: 7757-82-6
- Chemical structure:
This structure is also available as a 2d Mol file - Species with the same structure:
- Other names: Sulfuric acid, sodium salt; Sulfuric acid sodium salt (1:2); Sodium sulfate
- Information on this page:
- Other data available:
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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.
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°liquid | -324.183 | kcal/mol | Review | Chase, 1998 | Data last reviewed in June, 1978 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°liquid,1 bar | 43.303 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in June, 1978 |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔfH°solid | -331.635 | kcal/mol | Review | Chase, 1998 | v phase; Data last reviewed in June, 1978 |
Liquid Phase Heat Capacity (Shomate Equation)
Cp° = A + B*t + C*t2 + D*t3 +
E/t2
H° − H°298.15= A*t + B*t2/2 +
C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 −
E/(2*t2) + G
Cp = heat capacity (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 1157. to 3000. |
|---|---|
| A | 47.09202 |
| B | -0.000007 |
| C | 0.000003 |
| D | -3.091635×10-7 |
| E | -0.000001 |
| F | -341.1233 |
| G | 94.06812 |
| H | -324.1826 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in June, 1978 |
Solid Phase Heat Capacity (Shomate Equation)
Cp° = A + B*t + C*t2 + D*t3 +
E/t2
H° − H°298.15= A*t + B*t2/2 +
C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 −
E/(2*t2) + G
Cp = heat capacity (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 298. to 1000. | 298. to 1000. | 298. to 1157. | 298. to 1157. | 298. to 1000. |
|---|---|---|---|---|---|
| A | 23.17750 | 12.50930 | 36.83951 | 60.45449 | 23.20690 |
| B | 35.74221 | 44.18480 | 2.927740 | -73.87261 | 35.62801 |
| C | -10.63850 | 30.94221 | 11.80520 | 91.07541 | -10.48730 |
| D | 3.404190 | -14.35510 | -3.686791 | -27.20220 | 3.338220 |
| E | -0.209106 | 0.252248 | -0.045462 | -0.763126 | -0.209731 |
| F | -340.7500 | -336.0791 | -341.4070 | -347.7211 | -340.8191 |
| G | 52.54030 | 39.16809 | 81.23260 | 126.0640 | 52.46599 |
| H | -331.6350 | -330.9881 | -330.0430 | -329.6589 | -331.6960 |
| Reference | Chase, 1998 | Chase, 1998 | Chase, 1998 | Chase, 1998 | Chase, 1998 |
| Comment | v phase; Data last reviewed in June, 1978 | iii phase; Data last reviewed in June, 1978 | i phase; Data last reviewed in June, 1978 | δ phase; Data last reviewed in June, 1978 | iv phase; Data last reviewed in June, 1978 |
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.
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (atm)
T = temperature (K)
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| Temperature (K) | A | B | C | Reference | Comment |
|---|---|---|---|---|---|
| 1073. to 1223. | 1.92763 | 7517.522 | -375.044 | Fryxell, Trythall, et al., 1973 | Coefficents calculated by NIST from author's data. |
Reaction 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: José A. Martinho Simões
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
C2H5NaO (cr) + 0.5( • 1100
) (solution) =
(solution) + 0.5
(solution)
By formula: C2H5NaO (cr) + 0.5(H2O4S • 1100H2O) (solution) = C2H6O (solution) + 0.5Na2O4S (solution)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | -28.30 ± 0.91 | kcal/mol | RSC | Blanchard, Joly, et al., 1974 | solvent: Sulphuric acid aqueous solution; The reaction enthalpy relies on -2.53 kcal/mol for the enthalpy of solution of EtOH(l) and on 9.97±0.04 for the enthalpy of solution of Na2SO4(cr) Blanchard, Joly, et al., 1974. A value of -117.3 ± 1.4 kcal/mol was derived in Blanchard, Joly, et al., 1974 for the enthalpy of formation. However, this value is affected by a calculation error. Also, the authors have not accounted for the acid dilution (this correction could not be made in the present database, due to lack of information). These problems were also noted in the data compilations Tel'noi and Rabinovich, 1980 and Wagman, Evans W.H., et al., 1982, where the values quoted for the enthalpy of formation, which rely on the experimental data reported in Blanchard, Joly, et al., 1974, are -98.0 ± 1.0 kcal/mol and -98.90 kcal/mol, respectively. See also comments in Liebman, Martinho Simões, et al., 1995 |
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: Timothy J. Johnson, Tanya L. Myers, Yin-Fong Su, Russell G. Tonkyn, Molly Rose K. Kelly-Gorham, and Tyler O. Danby
Condensed Phase Spectrum
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Additional Data
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Particle size distribution data for this spectrum is available.
| Owner | Public domain |
|---|---|
| Origin | Pacific Northwest National Laboratory Under IARPA Contract |
| Date | March 2017 |
| State | solid |
| Instrument | Bruker Tensor 37 FTIR |
| Aperture | 6 mm |
| External diffuse reflectance accessory | A 562-G integrating sphere |
| Beam splitter | Ge on KBr |
| Diameter of detector port in sphere | 2×2 mm, 60° field of view MCT |
| Sphere diameter | 75 mm |
| Acquisition mode | double-sided, forward-backward |
| Scanner velocity | 40 kHz |
| Co-added scans | 2048 |
| Phase resolution | 32.00 |
| Phase correction | Mertz |
| Zero filling | 4× |
| Spectral range | 7,500 to 600 cm-1 saved; 7500 to 600 cm-1 reported |
| Resolution | 0.96450084 |
| Spectral resolution | 4 cm-1 |
| Wavenumber accuracy | ± 0.4 cm-1 |
| Apodization function | Blackman-Harris 3-term |
| Low-pass filter | Open |
| Switch gain on | 512 points |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, IR Spectrum, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Chase, 1998
Chase, M.W., Jr.,
NIST-JANAF Themochemical Tables, Fourth Edition,
J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]
Fryxell, Trythall, et al., 1973
Fryxell, R.E.; Trythall, C.A.; Perkins, R.J.,
Vapor Pressure of Liquid Sodium Sulfate from 954 to 1204 C,
Corros. Abstr., 1973, 29, 11, 423-428, https://doi.org/10.5006/0010-9312-29.11.423
. [all data]
Blanchard, Joly, et al., 1974
Blanchard, J.M.; Joly, R.D.; Lettoffe, J.M.; Perachon, G.; Thourey, J.,
J. Chim. Phys. Phys.-Chim. Biol., 1974, 71, 472. [all data]
Tel'noi and Rabinovich, 1980
Tel'noi, V.I.; Rabinovich, I.B.,
Russ. Chem. Rev., 1980, 49, 603. [all data]
Wagman, Evans W.H., et al., 1982
Wagman, D.D.; Evans W.H.; Parker, V.B.; Schumm, R.H.; Halow, I.; Bailey, S.M.; Churney, K.L.; Nuttall, R.L.,
The NBS Tables of Chemical Thermodynamic Properties; J. Phys. Chem. Ref. Data, 1982, 11, Suppl. 2. [all data]
Liebman, Martinho Simões, et al., 1995
Liebman, J.F.; Martinho Simões, J.A.; Slayden, S.W.,
In Lithium Chemistry: A Theoretical and Experimental Overview Wiley: New York, Sapse, A.-M.; Schleyer, P. von Ragué, ed(s)., 1995. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, IR Spectrum, References
- Symbols used in this document:
S°liquid,1 bar Entropy of liquid at standard conditions (1 bar) ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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