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Properties of substance:

ammonium thiocyanate

Group of substances:

inorganic

Physical appearance:

colorless monoclinic crystals

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

CH4N2S

Structural formula as text:

NH4SCN

Molar/atomic mass: 76.12

Melting point (°C):

149.6

Decomposition temperature (°C):

170

Solubility (g/100 g of solvent):

acetic acid: very soluble [Ref.]
acetone: soluble [Ref.]
acetonitrile: 7.52 (18°C) [Ref.]
ammonia liquid : 312 (25°C) [Ref.]
chloroform: practically insoluble [Ref.]
dimethylformamide: 15.2 (25°C) [Ref.]
dimethylsulfoxide: 27 (25°C) [Ref.]
ethanol: 23.56 (18.45°C) [Ref.]
ethanol: 27.45 (33.25°C) [Ref.]
ethyl acetate: practically insoluble [Ref.]
methanol: 59 (24.58°C) [Ref.]
methanol: 66.8 (32.94°C) [Ref.]
nickel tetracarbonyl: insoluble [Ref.]
sulfur dioxide: 46.8 (0°C) [Ref.]
tributyl phosphate: 11.6 (22°C) [Ref.]
water: 120 (0°C) [Ref.]
water: 144 (10°C) [Ref.]
water: 170 (20°C) [Ref.]
water: 190 (25°C) [Ref.]
water: 208 (30°C) [Ref.]
water: 284 (50°C) [Ref.]
water: 431 (70°C) [Ref.]

Hygroscopic:

yes

Density:

1.305 (20°C, g/cm3)

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

-82 (s)

LD50 (mg/kg):

720 (mice, oral)

References:

  1. Vanderzee C.E., Westrum E.F. Jr. Heat capacities and thermodynamic properties of ammonium and potassium thiocyanates from 5 to 340 K / Journal of Chemical Thermodynamics. - 1970. - Vol. 2, No. 3. - pp. 417-429
  2. Lewis R.J. Sax's Dangerous Properties of Industrial Materials. - 11ed. - Wiley-interscience, 2004. - pp. 243
  3. Milne G.W.A. Gardner's Commercially Important Chemicals. - Wiley-Interscience, 2005. - pp. 36
  4. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 1063-1065
  5. Вредные вещества в промышленности: Справочник для химиков, инженеров и врачей. - 7-е изд., Т.3. - Л.: Химия, 1976. - pp. 274-275 [Russian]
  6. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 54 [Russian]
  7. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 214, 743 [Russian]
  8. Химическая энциклопедия. - Т. 1. - М.: Советская энциклопедия, 1988. - pp. 154 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru