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Properties of substance:

iron(III) chloride

Synonyms:

ferric chloride

Group of substances:

inorganic

Physical appearance:

reddish brown hexagonal crystals

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

Cl3Fe

Structural formula as text:

FeCl3

Molar/atomic mass: 162.21

Melting point (°C):

307.5

Boiling point (°C):

315

Decomposition temperature (°C):

500

CAS №: 7705-08-0

Solubility (g/100 g of solvent):

acetic acid: very soluble [Ref.]
acetone: 63 (18°C) [Ref.]
antimony trichloride: very slightly soluble [Ref.]
arsenic tribromide: difficulty soluble [Ref.]
arsenic trichloride: soluble [Ref.]
benzene: sparingly soluble [Ref.]
benzonitrile: soluble [Ref.]
carbon disulphide: sparingly soluble [Ref.]
chlorine liquid: soluble [Ref.]
diethyl ether: very soluble [Ref.]
diisopropyl ether: soluble [Ref.]
dimethylformamide: 20 (25°C) [Ref.]
ethanol: 136 (0°C) [Ref.]
ethanol: 141 (15°C) [Ref.]
ethanol: 144 (20.6°C) [Ref.]
ethyl acetate: insoluble [Ref.]
glycerol: very soluble [Ref.]
methanol: 131 (0°C) [Ref.]
methanol: 143 (15°C) [Ref.]
methanol: 161 (30°C) [Ref.]
methyl acetate: soluble [Ref.]
nitrosyl chloride: 93 (0°C) [Ref.]
phosphorus tribromide : soluble [Ref.]
phosphorus trichloride: sparingly soluble [Ref.]
phosphorus(V) trichloride oxide: soluble [Ref.]
propylene carbonate: very soluble (25°C) [Ref.]
quinoline: soluble [Ref.]
selenium(IV) oxychloride: 30.5 (25°C) [Ref.]
sulfur dioxide: soluble [Ref.]
sulfuryl chloride: soluble [Ref.]
trichlorosilane: 0.00156 [Ref.]
water: 74.4 (0°C) [Ref.]
water: 81.8 (10°C) [Ref.]
water: 96.9 (20°C) [Ref.]
water: 99 (25°C) [Ref.]
water: 282 (35°C) [Ref.]
water: 315 (50°C) [Ref.]
water: 373 (60°C) [Ref.]
water: 526 (80°C) [Ref.]
water: 536 (100°C) [Ref.]

Properties of solutions:

10% (wt.), solvent - water
  Dynamic viscosity (mPa·s) = 1.553 (20°)
  Density (g/cm3) = 1.0853 (20°)
  Index of refraction = 1.3611 (20°)
  Freezing point (°C) = -4.85
32% (wt.), solvent - water
  Dynamic viscosity (mPa·s) = 5.274 (20°)
  Density (g/cm3) = 1.3153 (20°)
  Freezing point (°C) = -49.16

Hygroscopic:

very hygroscopic

Density:

2.804 (11°C, g/cm3)
2.898 (25°C, g/cm3)

Reactions of synthesis:

  1. [Ref.1]
    Fe + Cl2 → FeCl2
    2FeCl2 + Cl2 → 2FeCl3

Reactions:

  1. [Ref.1]
    2FeCl3 + Fe → 3FeCl2
  2. [Ref.1]
    NOCl + FeCl3 → NO[FeCl4]

Vapour pressure (Torr):

0.000001 (76.9°C)
0.00001 (92.6°C)
0.0001 (110°C)
0.001 (129.2°C)
0.01 (150.8°C)
0.1 (175°C)
1 (203°C)
10 (230°C)
100 (271°C)

Dipole moment (D):

1.27 (20°C)

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

-399.2 (s) [Ref.]
-253.1 (g) [Ref.]

Standard molar Gibbs energy of formation ΔfG (298 K, kJ/mol)

-334 (s) [Ref.]

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

147.8 (s) [Ref.]
344.2 (g) [Ref.]

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

96.7 (s) [Ref.]

Enthalpy (heat) of fusion ΔfusH (kJ/mol)

40 (s) [Ref.]

LD50 (mg/kg):

440 (rats, intraperitoneal)

Neel temperature (K):

10

References:

  1. CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 4-69
  2. Comey A. M., Hahn D. A. A dictionary of Chemical Solubilities Inorganic. - 2 ed. - New York, The MacMillan Company, 1921. - pp. 427-431
  3. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 525-531
  4. Карякин Ю.В., Ангелов И.И. Чистые химические вещества. - М., 1974. - pp. 108 [Russian]
  5. Некрасов Б.В. Основы общей химии. - Т.2. - М.: Химия, 1973. - pp. 369 [Russian]
  6. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 64 [Russian]
  7. Реми Г. Курс неорганической химии. - Т.2. - М., 1966. - pp. 302-303 [Russian]
  8. Рипан Р., Четяну И. Неорганическая химия. - Т.2. - М.: Мир, 1972. - pp. 520-521 [Russian]
  9. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 349 [Russian]
  10. Справочник по растворимости. - Т.1, Кн.2. - М.-Л.: ИАН СССР, 1962. - pp. 1002 [Russian]
  11. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 62-63 [Russian]
  12. Фурман А.А. Неорганические хлориды (химия и технология). - М.: Химия, 1980. - pp. 382-386 [Russian]
  13. Химическая энциклопедия. - Т. 2. - М.: Советская энциклопедия, 1990. - pp. 138 [Russian]
  14. Якименко Л.М. Производство хлора, каустической соды и неорганических хлорпродуктов. - М.: Химия, 1974. - pp. 567-572 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru