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Properties of substance:

magnesium sulfate


Physical appearance:

colorless rhombic crystals

Empirical formula (Hill's system):

MgO4S

Structural formula:

MgSO4

Molar/atomic mass: 120.36

Melting point (°C):

1127

Destruction point (°C):

1127

Solubility (g/100 g of solvent):

liquid ammonia: insoluble [Ref.]
acetone: insoluble [Ref.]
water: 25.5 (0°C) [Ref.]
water: 30.4 (10°C) [Ref.]
water: 35.1 (20°C) [Ref.]
water: 37.4 (25°C) [Ref.]
water: 39.7 (30°C) [Ref.]
water: 44.7 (40°C) [Ref.]
water: 50.4 (50°C) [Ref.]
water: 54.8 (60°C) [Ref.]
water: 59.2 (70°C) [Ref.]
water: 54.8 (80°C) [Ref.]
water: 50.2 (100°C) [Ref.]
water: 24.1 (150°C) [Ref.]
water: 1.5 (200°C) [Ref.]
glycerol: 26.3 (25°C) [Ref.]
diethyl ether: 1.16 (18°C) [Ref.]
methanol: 0.276 (15°C) [Ref.]
methanol: 0.224 (25°C) [Ref.]
methanol: 0.123 (55°C) [Ref.]
methyl acetate: insoluble [Ref.]
formic acid 95%: 0.34 (19°C) [Ref.]
sulfuric acid: 0.22 (25.7°C) [Ref.]
sulfuric acid: 1.71 (91.7°C) [Ref.]
carbon disulphide: insoluble [Ref.]
ethanol: 0.025 (15°C) [Ref.]
ethanol: 0.016 (55°C) [Ref.]
ethyl acetate: insoluble [Ref.]

Gigroscopic:

yes

Density:

2.66 (20°C, g/cm3)

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

    -1301.4 (s)

    Standard molar Gibbs energy of formation ΔfG0 (298.15 K, kJ/mol):

    -1158.7 (s)

    Standard molar entropy S0 (298.15 K, J/mol·K):

    91.6 (s)

    Molar heat capacity at constant pressure Cp (298.15 K, J/mol·K):

    96.48 (s)

    Molar enthalpy (heat) of fusion ΔfusH (kJ/mol):

    14.6

    LD50 (mg/kg):

    150 (mice, intraperitoneal)

    References:

    1. Comey A. M., Hahn D. A. A dictionary of Chemical Solubilities Inorganic. - 2 ed. - New York, The MacMillan Company, 1921. - pp. 984-988
    2. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 985-995
    3. Вредные химические вещества: Неорганические соединения элементов I-IV групп. Справочник. - Л.: Химия, 1988. - pp. 104
    4. Позин М.Е. Технология минеральных солей (удобрений, пестицидов, промышленных солей, окислов и кислот). - Ч.1. - Л.: Химия, 1974. - pp. 301-304
    5. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 78
    6. Рипан Р., Четяну И. Неорганическая химия. - Т.1. - М.: Мир, 1971. - pp. 182
    7. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 237, 775-776
    8. Химическая энциклопедия. - Т.2. - М.: Советская энциклопедия, 1990. - pp. 629-630
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      © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru