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Properties of substance:

sodium aluminum sulfate dodecahydrate

Physical appearance:

colorless cubic crystals

Empirical formula (Hill's system):


Structural formula:

NaAl(SO4)2 · 12H2O

Molar/atomic mass: 458.28

Melting point (°C):


Solubility (g/100 g of solvent):

water: 106 (0°C)
water: 121 (45°C)
ethanol: insoluble


1.675 (20°C, d4)

Index of refraction:

1.4388 (20°C)

    Standard molar enthalpy (heat) of formation ΔfH0 (298.15 K, kJ/mol):

    -5983 (s)


    1. Краткий справочник по химии. - Под ред. Куриленко О.Д. - Киев: Наукова думка, 1974. - pp. 268-269
    2. Химический энциклопедический словарь. - Под ред. Кнунянц И.Л. - М.: Советсткая энциклопедия, 1983. - pp. 366
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      © Collected Ruslan Anatolievich Kiper,