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Properties of substance:

strontium iodide

Group of substances:

inorganic

Physical appearance:

colorless plate-like crystals

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

I2Sr

Structural formula as text:

SrI2

Molar/atomic mass: 341.43

Melting point (°C):

515

Solubility (g/100 g of solvent):

acetone: 72.843 (0°C) [Ref.]
acetone: 55.501 (10°C) [Ref.]
acetone: 42.006 (20°C) [Ref.]
acetone: 33.015 (30°C) [Ref.]
acetone: 24.274 (50°C) [Ref.]
ammonia liquid : 0.31 (0°C) [Ref.]
diethyl ether: insoluble [Ref.]
ethanol: 4.5 (39°C) [Ref.]
iodine liquid: insoluble [Ref.]
methanol: soluble [Ref.]
sulfur dioxide: 0.14 (25°C) [Ref.]
water: 164 (0°C) [Ref.]
water: 179 (20°C) [Ref.]
water: 196 (40°C) [Ref.]
water: 217 (60°C) [Ref.]
water: 277 (80°C) [Ref.]
water: 370 (100°C) [Ref.]
water: 421 (120°C) [Ref.]

Properties of solutions:

60% (wt.), solvent - water
  Density (g/cm3) = 1.9531 (20°)

Hygroscopic:

very hygroscopic

Density:

4.549 (25°C, g/cm3)

Surface tension (mN/m):

111 (600°C)
110 (700°C)
106 (770°C)

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

-566.9 (s)

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

-559.8 (s)

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

159 (s)

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

81.6 (s)

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

19.7

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

194

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

-269 (g)

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

341 (g)

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

61.6 (g)

References:

  1. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 1513-1514
  2. Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 194-195 [Russian]
  3. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 100 [Russian]
  4. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 269, 802 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru