“Sodium sulfate (data page)”的意思、由来-开放百科全书

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Sodium sulfate (data page)

释义

References

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, n_D
Abbe number	?
Dielectric constant, ε_r	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, χ_m	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, Δ_fusH^o	200.8 kJ/mol^[1]
Std entropy change of fusion, Δ_fusS^o	? J/(mol·K)
Std enthalpy change of vaporization, Δ_vapH^o	? kJ/mol
Std entropy change of vaporization, Δ_vapS^o	? J/(mol·K)
Solid properties
Std enthalpy change of formation, Δ_fH^o_solid	-1387.1 kJ/mol
Standard molar entropy, S^o_solid	149.6 J/(mol K)
Heat capacity, c_p	128.2 J/(mol K)
Entropy change of solution^[1]	2.1 J/(mol K)
Liquid properties
Std enthalpy change of formation, Δ_fH^o_liquid	? kJ/mol
Standard molar entropy, S^o_liquid	? J/(mol K)
Heat capacity, c_p	?kJ/(mol K)
Gas properties^[2]
Std enthalpy change of formation, Δ_fH^o_gas	-1033.62 kJ/mol
Standard molar entropy, S^o_gas	346.84 J/(mol K)
Heat capacity, c_p	? J/(mol K)

== Spectral data ==

UV-Vis

λ_max

? nm

Extinction coefficient, ε

Major absorption bands^[3]

Wave number	transmittance
(nujol mull, nujol pks not listed)
1124 cm⁻¹	10% (br)
638 cm⁻¹	42%
618 cm⁻¹	35%

NMR

Proton NMR

Carbon-13 NMR

Other NMR data

Masses of
main fragments

References

1. ^¹²{{cite book | last = Mellor | first = J. W. | title = A Comprehensive Treatise on Inorganic and Theoretical Chemistry | publisher = Longmans | date = 1961 (new impr.) | location = London | pages = 660–672 }}
2. ^{{cite web | title = Sodium sulfate | publisher = NIST | url = http://webbook.nist.gov/cgi/cbook.cgi?ID=C7757826&Units=SI | accessdate = 2007-06-14 }}
3. ^{{cite web|url=http://www.aist.go.jp/RIODB/SDBS/cgi-bin/cre_index.cgi|title=Spectral Database for Organic Compounds|publisher=Advanced Industrial Science and Technology|format=Queriable database|accessdate=9 June 2007|deadurl=yes|archiveurl=https://web.archive.org/web/20060505120103/http://www.aist.go.jp/RIODB/SDBS/cgi-bin/cre_index.cgi|archivedate=5 May 2006|df=}}

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

Disclaimer applies.

1 : Chemical data pages

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