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 InfoCard 100.028.928 Edit this at Wikidata
E number E514(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 checkY
    Key: PMZURENOXWZQFD-UHFFFAOYSA-L checkY
  • 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
Na2SO4
Molar mass 142.04 g/mol (anhydrous)
322.20 g/mol (decahydrate)
Appearance white crystalline solid
hygroscopic
Odor odorless
Density 2.664 g/cm3 (anhydrous)
1.464 g/cm3 (decahydrate)
Melting point 884 °C (1,623 °F; 1,157 K) (anhydrous)
32.38 °C (decahydrate)
Boiling point 1,429 °C (2,604 °F; 1,702 K) (anhydrous)
anhydrous:
4.76 g/100 mL (0 °C)
28.1 g/100 mL (25 °C)[1]
42.7 g/100 mL (100 °C)
heptahydrate:
19.5 g/100 mL (0 °C)
44 g/100 mL (20 °C)
Solubility insoluble in ethanol
soluble in glycerol, water, and hydrogen iodide
−52.0·10−6 cm3/mol
1.468 (anhydrous)
1.394 (decahydrate)
Structure
orthorhombic (anhydrous)[2]
monoclinic (decahydrate)
Pharmacology
A06AD13 (WHO) A12CA02 (WHO)
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Irritant
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 1: Exposure would cause irritation but only minor residual injury. E.g. turpentineFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
1
0
0
Flash point Non-flammable
Safety data sheet (SDS) ICSC 0952
Related compounds
Other anions
 Sodium selenate
Sodium tellurate
Other cations
 Lithium sulfate
Potassium sulfate
Rubidium sulfate
Caesium sulfate
Related compounds
 Sodium bisulfate
Sodium sulfite
Sodium persulfate
Sodium pyrosulfate
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).
checkY verify (what is checkY☒N ?)

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.[3]

  1. ^ National Center for Biotechnology Information. PubChem Compound Summary for CID 24436, Sodium sulfate. https://pubchem.ncbi.nlm.nih.gov/compound/Sodium-sulfate. Accessed Nov. 2, 2020.
  2. ^ Zachariasen WH, Ziegler GE (1932). "The crystal structure of anhydrous sodium sulfate Na2SO4". Zeitschrift für Kristallographie, Kristallgeometrie, Kristallphysik, Kristallchemie. 81 (1–6). Wiesbaden: Akademische Verlagsgesellschaft: 92–101. doi:10.1524/zkri.1932.81.1.92. S2CID 102107891.
  3. ^ Helmold Plessen (2000). "Sodium Sulfates". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a24_355. ISBN 978-3527306732.