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Sodium sulfate






    General
    Systematic name Sodium sulfate
    Other names Sodium sulphate
    Molecular formula Na2SO4
    Hydrates Heptahydrate (Na2SO4·7H2O) 2SO4·10H2O)
    Molar mass 142.04 g/mol (anhydrous)
    Appearance White crystalline solid,
    CAS number [1] (anhydrous) [2] (decahydrate)
    Properties
    Density 2.68 g/cm3, anhydrous 3, decahydrate
    Solubility in water 4.76 g/100 ml (0 °C)
    In ethanol insoluble
    Melting point 884 °C (1157S K)
    Structure
    Coordination geometry ?
    Crystal structure monoclinic,
    Hazards
    MSDS External MSDS
    Main hazard Irritant
    R/S statement None
    RTECS number WE 1650000 (anhydrous)
    Supplementary data page
    Structure & properties n, εr, etc.
    Thermodynamic data Phase behaviour
    Solid, liquid, gas
    Spectral data UV, IR, NMR, MS
    Related compounds
    Other anion Sodium hydrogen sulfate
    Other cation Lithium sulfate
    Except where noted otherwise, data are given for
    materials in their standard state
    Sodium sulfate is an important compound of sodium, widely used to make sodium sulfide for the Kroll process of paper pulpling. When anhydrous, it is a white crystalline solid of formula Na2SO4. The decahydrate,Na2SO4•10H2O, is also known as Glauber's salt, after Johann Glauber, who discovered it in the 17th century, or sal mirabilis. The white or colorless crystals were originally used as a laxative. Other uses include dyeing, frosting windows, heat storage in passive solar heating systems, wood digestion in the pulp industry, and detergents. About half of the world's production is from the natural mineral form - found in lake beds in southern Saskatchewan, for example, where it is also known as mirabilite; and half from by-products of chemical processes.

    External link

    "Sodium sulfate" on Saskatchewan Interactive