Sodium sulfate (data page)

This page provides supplementary chemical data on sodium sulfate.

Material Safety Data Sheet

The handling of this chemical may incur notable safety precautions. It is highly recommend that you seek the Safety Data Sheet (SDS) for this chemical from the manufacturer and follow its directions.

Structure and properties
Structure and properties[1]
Index of refraction, nD
Abbe number ?
Dielectric constant, εr anhydrous: 7.90 at r.t.
decahydrate: 5.0 at r.t.
pentahydrate: 7 at 250-290K
Bond strength ?
Bond length ?
Bond angle ?
Magnetic susceptibility, χm anhydrous: -52 x10−6 cm3 mol−1
decahydrate: -184 x10−6 cm3 mol−1
Surface tension 194.8 dyn/cm (194.8 mN/m) (at 900  °C)
184.7 dyn/cm (184.7 mN/m) (at 1077 °C)

Thermodynamic properties
Phase behavior
Triple point ? K (? °C), ? Pa
Critical point ? K (? °C), ? Pa
Std enthalpy change
of fusion, ΔfusHo		 200.8 kJ/mol[1]
Std entropy change
of fusion, ΔfusSo		 ? J/(mol·K)
Std enthalpy change
of vaporization, ΔvapHo		 ? kJ/mol
Std entropy change
of vaporization, ΔvapSo		 ? J/(mol·K)
Solid properties
Std enthalpy change
of formation, ΔfHosolid		 -1387.1 kJ/mol
Standard molar entropy,
Sosolid		 149.6 J/(mol K)
Heat capacity, cp 128.2 J/(mol K)
Entropy change of solution[1] 2.1 J/(mol K)
Liquid properties
Std enthalpy change
of formation, ΔfHoliquid		 ? kJ/mol
Standard molar entropy,
Soliquid		 ? J/(mol K)
Heat capacity, cp ?kJ/(mol K)
Gas properties[2]
Std enthalpy change
of formation, ΔfHogas		 -1033.62 kJ/mol
Standard molar entropy,
Sogas		 346.84 J/(mol K)
Heat capacity, cp ? J/(mol K)

Spectral data
UV-Vis
λmax ? nm
Extinction coefficient, ε ?
IR
Major absorption bands[3]
(nujol mull, nujol pks not listed)
Wave numbertransmittance
1124 cm−110% (br)
638 cm−142%
618 cm−135%
NMR
Proton NMR  
Carbon-13 NMR  
Other NMR data  
MS
Masses of
main fragments		  

References
  1. Mellor, J. W. (1961 (new impr.)). A Comprehensive Treatise on Inorganic and Theoretical Chemistry. London: Longmans. pp. 660–672. Check date values in: |date= (help)
  2. "Sodium sulfate". NIST. Retrieved 2007-06-14.
  3. "Spectral Database for Organic Compounds". Advanced Industrial Science and Technology. Archived from the original (Queriable database) on 5 May 2006. Retrieved 9 June 2007.

Except where noted otherwise, data relate to standard ambient temperature and pressure.

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