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Properties of substance:

iron(III) chloride hexahydrate

Group of substances:

inorganic

Physical appearance:

monoclinic crystals

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

H12Cl3FeO6

Structural formula as text:

FeCl3 * 6H2O

CAS No: 10025-77-1

Molar/atomic mass: 270.295

Melting point (°C):

37

Boiling point (°C):

285

Solubility (g/100 g of solvent):

diethyl ether: soluble [Ref.]
dimethylsulfoxide: 30 (25°C) [Ref.]
ethanol: soluble [Ref.]
glycerol: very soluble [Ref.]
water: very soluble [Ref.]

Hygroscopic:

yes

Density:

1.82 (20°C, g/cm3)

    Dissociation:

    pKa (1) = 3.05 (25°C, water)
    pKa (2) = 3.26 (25°C, water)

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

    -2223.8 (s)

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

    352.3 (s)

    References:

    1. CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 4-69
    2. Грилихес С.Я. Обезжиривание, травление и полирование металлов. - Л.: Машиностроение, 1983. - pp. 68-70 [Russian]
    3. Гринвуд Н., Эрншо А. Химия элементов. - Т.1. - М.: БИНОМ. Лаборатория знаний, 2008. - pp. 55-56 [Russian]
    4. Иванов-Есипович Н.К. Физико-химические основы производства радиоэлектронной аппаратуры. - М.: Высшая школа, 1979. - pp. 118-119 [Russian]
    5. Карякин Ю.В., Ангелов И.И. Чистые химические вещества. - М., 1974. - pp. 108 [Russian]
    6. Некрасов Б.В. Основы общей химии. - Т.2. - М.: Химия, 1973. - pp. 370 [Russian]
    7. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 62-63 [Russian]
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      © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru