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403008

Sigma-Aldrich

Sodium sulfate decahydrate

ACS reagent, ≥99.0%

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Synonym(s):
Glauber’s salt
Linear Formula:
Na2SO4 · 10H2O
CAS Number:
7727-73-3
Molecular Weight:
322.20
EC Number:
231-820-9
MDL number:
MFCD00149189
UNSPSC Code:
12352302
PubChem Substance ID:
329755975
NACRES:
NB.24

grade

ACS reagent

Quality Level

200

Assay

≥99.0%

form

crystals

impurities

≤0.01% insolubles

pH

5.2-9.2 (25 °C, 5%)

mp

32.4 °C

solubility

water: soluble 322.2 g/L at 20 °C

density

1.46 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤5 ppm
phosphate (PO43-): ≤5 ppm

cation traces

Ca: ≤0.005%
Fe: ≤5 ppm
K: ≤0.005%
Mg: ≤0.003%
heavy metals (as Pb): ≤3 ppm

SMILES string

O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].[O-]S([O-])(=O)=O

InChI

1S/2Na.H2O4S.10H2O/c;;1-5(2,3)4;;;;;;;;;;/h;;(H2,1,2,3,4);10*1H2/q2*+1;;;;;;;;;;;/p-2

InChI key

RSIJVJUOQBWMIM-UHFFFAOYSA-L

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General description

Sodium sulfate decahydrate is also called as Glauber′s salt. It shows promising characteristics as phase change material (PCM) due to its high solar thermal energy storage ability.

Application

Sodium sulfate decahydrate may be used to deepen the color while dyeing cotton fabrics.6

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

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Curbing global warming with phase change materials for energy storage.
Anisur MR, et al.
Renewable and Sustainable Energy Reviews, 18, 23-30 (2013)
Crystal structures of sodium sulfate decahydrate (Glauber's salt) and sodium tetraborate decahydrate (borax). Redetermination by neutron diffraction.
Levy HA and Lisensky GC.
Acta Crystallographica Section B, Structural Science, 34(12), 3502-3510 (1978)
Enhancement of solar thermal energy storage performance using sodium thiosulfate pentahydrate of a conventional solar water-heating system.
Canbazoglu S, et al.
Energy and Buildings, 37(3), 235-242 (2005)
Jia-ying Zhu et al.
Zhongguo wei zhong bing ji jiu yi xue = Chinese critical care medicine = Zhongguo weizhongbing jijiuyixue, 24(6), 346-348 (2012-10-02)
To investigate the effect of nasal tube feeding of rhubarb solution and umbilical compress of Glauber's salt for purgation in the treatment of patients with severe acute organophosphorus pesticide poisoning (AOPP). A retrospective study was conducted. Eighty patients with severe
C Poelaert et al.
Journal of animal science, 90 Suppl 4, 387-389 (2013-02-13)
Over the past decade, several in vitro methods have been developed to study intestinal fermentation in pigs and its influence on health. In these methods, samples are fermented by a bacterial inoculum diluted in a mineral buffer solution. Generally, a
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