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71970 Sigma-Aldrich

Sodium sulfate decahydrate

puriss. p.a., crystallized, ≥99.0% (calc. based on dry substance, T)

Synonym: Glauber’s salt

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Properties

Related Categories Analytical Reagents, Analytical Reagents for General Use, Analytical/Chromatography, Essential Chemicals, Puriss p.a.,
InChI Key   RSIJVJUOQBWMIM-UHFFFAOYSA-L
grade   puriss. p.a.
assay   ≥99.0% (calc. based on dry substance, T)
quality   crystallized
impurities   ≤0.0005% total nitrogen (N)
loss   53-57% loss on drying, 130 °C
pH   5.0-8.0 (25 °C, 50 mg/mL in H2O)
density   1.46 g/mL at 25 °C (lit.)
anion traces   chloride (Cl-): ≤5 mg/kg
  phosphate (PO43-): ≤10 mg/kg
cation traces   Ca: ≤20 mg/kg
  Cd: ≤5 mg/kg
  Co: ≤5 mg/kg
  Cr: ≤5 mg/kg
  Cu: ≤5 mg/kg
  Fe: ≤5 mg/kg
  K: ≤20 mg/kg
  Mg: ≤5 mg/kg
  Mn: ≤5 mg/kg
  Ni: ≤5 mg/kg
  Pb: ≤5 mg/kg
  Zn: ≤5 mg/kg

Description

General description

Sodium sulfate decahydrate (Glauber′s salt, mirabilite, Na2SO4·10H2O) is the decahydrate salt of sodium sulfate. Its crystal structure has been investigated by single-crystal neutron diffraction studies. Its crystallization enthalpy has been evaluated. It can be synthesized by reacting MnSO4, thiophene-2,5-dicarboxylic acid and sodium glutamate.

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RIDADR 
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WGK Germany 
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