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Properties of substance:

zinc chloride



skc-file

Group of substances:

inorganic

Physical appearance:

colorless trigonal crystals

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

Cl2Zn

Structural formula as text:

ZnCl2

Molar/atomic mass: 136.315

Melting point (°C):

318

Boiling point (°C):

732

CAS №: 7646-85-7

Solubility (g/100 g of solvent):

1-propanol: soluble [Ref.]
acetic acid: very soluble [Ref.]
acetone: 43.5 (18°C) [Ref.]
ammonia liquid : soluble [Ref.]
aniline: soluble [Ref.]
chromyl chloride: insoluble [Ref.]
diethyl ether: very soluble [Ref.]
dimethylsulfoxide: 30 (25°C) [Ref.]
ethanol: 100 (12.5°C) [Ref.]
ethyl acetate: soluble [Ref.]
ethylene carbonate: 33 (40°C) [Ref.]
glycerol: 50 (15.5°C) [Ref.]
hydrazine: 8 (20°C) [Ref.]
hydrogen fluoride : insoluble [Ref.]
methanol: soluble [Ref.]
propylene carbonate: 72 (25°C) [Ref.]
pyridine: 2.6 (20°C) [Ref.]
selenium(IV) oxychloride: 1.11 (25°C) [Ref.]
sulfur dioxide: 0.16 (0°C) [Ref.]
water: 208 (0°C) [Ref.]
water: 272 (10°C) [Ref.]
water: 367 (20°C) [Ref.]
water: 408 (25°C) [Ref.]
water: 435 (30°C) [Ref.]
water: 453 (40°C) [Ref.]
water: 471 (50°C) [Ref.]
water: 495 (60°C) [Ref.]
water: 549 (80°C) [Ref.]
water: 614 (100°C) [Ref.]

Properties of solutions:

70% (wt.), solvent - water
  Density (g/cm3) = 1.962 (20°)
77,16% (wt.), solvent - dimethyl sulfone
  Density (g/cm3) = 2.1 (90°)

Numerical data:

Critical relative humidity (%): 3

Not numerical data:

very hygroscopic


Density:

2.91 (25°C, g/cm3)
2.517 (320°C, g/cm3)
2.499 (360°C, g/cm3)
2.481 (400°C, g/cm3)

Reactions of synthesis:

  1. [Ref.1aster]
    Zn + 2HCl → ZnCl2 + H2
  2. [Ref.1aster]
    Zn + 2HCl → ZnCl2 + H2
  3. [Ref.1aster]
    Zn + 2HCl → ZnCl2 + H2
  4. [Ref.1aster, Ref.2aster]
    Zn + Cl2 → ZnCl2

Vapour pressure (Torr):

1 (428°C)
5 (481°C)
10 (508°C)
40 (566°C)
100 (610°C)
200 (648°C)
400 (689°C)

Viscosity (mPa·s):

3260 (324.5°C)
2310 (334.4°C)
1200 (352.7°C)
610 (374.6°C)
220 (413.8°C)
110 (443°C)

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

-415.05 (s)

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

-369.4 (s)

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

111.5 (s)

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

71.33 (s)

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

10.25

Enthalpy (heat) of vaporization ΔvapH (kJ/mol):

119.2

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

-266 (g)

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

277 (g)

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

56.9 (g)

Enthalpy (heat) of solution ΔsolH (kJ)

-65.79 (s) [solvent: water, 18°C, 1 mol in 400 mol of water] [Ref.]

References:

  1. CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 4-99
  2. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 1582-1583
  3. Вредные вещества в промышленности: Справочник для химиков, инженеров и врачей. - 7-е изд., Т.3. - Л.: Химия, 1976. - pp. 373-374 [Russian]
  4. Гринвуд Н., Эрншо А. Химия элементов. - Т.2. - М.: БИНОМ. Лаборатория знаний, 2008. - pp. 532 [Russian]
  5. Некрасов Б.В. Основы общей химии. - Т.2. - М.: Химия, 1973. - pp. 199 [Russian]
  6. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 113 [Russian]
  7. Реми Г. Курс неорганической химии. - Т.2. - М., 1966. - pp. 470 [Russian]
  8. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 262, 793-794 [Russian]
  9. Справочник химика. - 2 изд., Т. 2. - Л.-М.: Химия, 1964. - pp. 256-257 [Russian]
  10. Фурман А.А. Неорганические хлориды (химия и технология). - М.: Химия, 1980. - pp. 111-121 [Russian]
  11. Якименко Л.М. Производство хлора, каустической соды и неорганических хлорпродуктов. - М.: Химия, 1974. - pp. 572-578 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru