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Properties of substance:

antimony(III) oxide

Group of substances:

inorganic

Physical appearance:

white cubic crystals

Empirical formula (Hill's system for organic substances):

O3Sb2

Structural formula as text:

Sb2O3

Molar/atomic mass: 291.5

Melting point (°C):

656

Boiling point (°C):

1456

Solubility (g/100 g of solvent):

acetone: insoluble [Ref.]
ammonia liquid : insoluble [Ref.]
hydrazine: 1 [Ref.]
water: 0.002 (17°C) [Ref.]

Density:

5.19 (25°C, g/cm3)

Vapour pressure (Torr):

0.1 (512°C)
1 (577°C)
10 (660°C)
100 (953°C)

    Standard molar enthalpy (heat) of formation ΔfH (298 K, kJ/mol)

    -720,3 (s) [Ref.]

    Standard molar entropy S (298 K, J/(mol·K))

    110,4 (s) [Ref.]

    Molar heat capacity at constant pressure Cp (298 K, J/(mol·K))

    111,8 (s) [Ref.]

    LD50 (mg/kg):

    3250 (rats, intraperitoneal)
    172 (mice, intraperitoneal)

    References:

    1. Lewis R.J. Sax's Dangerous Properties of Industrial Materials. - 11ed. - Wiley-interscience, 2004. - pp. 279
    2. Некрасов Б.В. Основы общей химии. - Т.1. - М.: Химия, 1973. - pp. 471 [Russian]
    3. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 100 [Russian]
    4. Реми Г. Курс неорганической химии. - Т.1. - М., 1963. - pp. 716-717 [Russian]
    5. Химическая энциклопедия. - Т. 4. - М.: Советская энциклопедия, 1995. - pp. 478-479 [Russian]
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      © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru