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Sodium sulfate

Sodium sulfate
Names IUPAC name
Sodium sulfate
Other names
    • Sodium sulphate
    • Disodium sulfate
    • Sulfate of sodium
    • Thénardite (anhydrous mineral)
    • Glauber's salt (decahydrate)
    • Sal mirabilis (decahydrate)
    • Mirabilite (decahydrate mineral)
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard100.028.928E numberE514(i) (acidity regulators, ...)
RTECS number
  • WE1650000
UNII
  • InChI=1S/2Na.H2O4S/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2*+1;/p-2
    Key: PMZURENOXWZQFD-UHFFFAOYSA-L
  • InChI=1S/2Na.H2O4S/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2*+1;/p-2
  • InChI=1S/2Na.H2O4S/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2*+1;/p-2
    Key: PMZURENOXWZQFD-UHFFFAOYSA-L
  • [Na+].[Na+].[O-]S([O-])(=O)=O
Properties Na2SO4Molar mass142.04 g/mol (anhydrous)
322.20 g/mol (decahydrate) Appearance white crystalline solid, hygroscopicOdorodorless Density2.664 g/cm (anhydrous)
1.464 g/cm (decahydrate) Melting point884 °C (1,623 °F; 1,157 K) (anhydrous)
32.38 °C (decahydrate) Boiling point1,429 °C (2,604 °F; 1,702 K) (anhydrous) anhydrous:
4.76 g/100 mL (0 °C)
28.1 g/100 mL (25 °C)
49.7 g/100 mL (32.384 °C)
42.7 g/100 mL (100 °C)
heptahydrate:
19.5 g/100 mL (0 °C)
44 g/100 mL (20 °C) Solubilityinsoluble in ethanol
soluble in glycerol, water, and hydrogen iodide−52.0·10 cm/mol (anhydrous), −184·10 cm/mol (decahydrate) 1.468 (anhydrous)
1.394 (decahydrate) Structure orthorhombic (anhydrous)
monoclinic (decahydrate) Thermochemistry 128.2 J/(mol K) 149.6 J/(mol K) −1387.1 kJ/mol 200.8 kJ/mol Pharmacology A06AD13 (WHO) A12CA02 (WHO) Hazards Occupational safety and health (OHS/OSH):
Main hazards
Irritant NFPA 704 (fire diamond)
1
0
0
Flash pointNon-flammable Safety data sheet (SDS) ICSC 0952Related compounds
Other anions
Other cations
Related compounds
Supplementary data page Sodium sulfate (data page)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Sodium sulfate (also known as sodium sulphate or sulfate of soda) is the inorganic compound with formula Na2SO4 as well as several related hydrates. All forms are white solids that are highly soluble in water. With an annual production of 6 million tonnes, the decahydrate is a major commodity chemical product. It is mainly used as a filler in the manufacture of powdered home laundry detergents and in the Kraft process of paper pulping for making highly alkaline sulfides.

Wikipedia source