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Properties of substance:

sodium thiocyanate

Group of substances:

inorganic

Physical appearance:

colorless rhombic crystals

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

CNNaS

Structural formula as text:

NaNCS

Molar/atomic mass: 81.072

Melting point (°C):

287

Decomposition temperature (°C):

307

Solubility (g/100 g of solvent):

acetone: 6.85 (18.8°C) [Ref.]
acetone: 7.1 (20°C) [Ref.]
acetone: 9.49 (29.2°C) [Ref.]
acetone: 14.08 (41.9°C) [Ref.]
acetone: 21.39 (56°C) [Ref.]
ammonia liquid : 206 (25°C) [Ref.]
benzonitrile: soluble [Ref.]
dimethylformamide: 29.2 (25°C) [Ref.]
ethanol: 18.37 (18.8°C) [Ref.]
ethanol: 19.05 (35.8°C) [Ref.]
ethanol: 21 (52.8°C) [Ref.]
ethanol: 22.61 (61.8°C) [Ref.]
ethanol: 24.42 (70.9°C) [Ref.]
ethylenediamine: 93.5 (25°C) [Ref.]
methanol: 35 (15.8°C) [Ref.]
methanol: 40.04 (24.7°C) [Ref.]
methanol: 40.2 (25°C) [Ref.]
methanol: 45.14 (34.6°C) [Ref.]
methanol: 50.98 (48°C) [Ref.]
methanol: 51.5 (48.9°C) [Ref.]
methanol: 52.2 (50°C) [Ref.]
methanol: 53.54 (52.3°C) [Ref.]
methyl acetate: soluble [Ref.]
sulfur dioxide: 0.651 (0°C) [Ref.]
tributyl phosphate: 12.5 (22°C) [Ref.]
water: 112.7 (10.7°C) [Ref.]
water: 127.5 (17.3°C) [Ref.]
water: 139.3 (21.3°C) [Ref.]
water: 142.6 (25°C) [Ref.]
water: 167.5 (29.2°C) [Ref.]
water: 172.4 (33.8°C) [Ref.]
water: 178 (46.1°C) [Ref.]
water: 189.5 (65.8°C) [Ref.]
water: 196.2 (73.8°C) [Ref.]
water: 202 (81.8°C) [Ref.]
water: 225.6 (101.4°C) [Ref.]

Hygroscopic:

yes

Density:

1.73 (20°C, g/cm3)

Reactions:

  1. [Ref.1aster]
    Pb(NO3)2 + 2 NaSCN → Pb(SCN)2 + 2NaNO3

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

-174.6 (s)

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

24.2

LD50 (mg/kg):

360-380 (mice, oral)

References:

  1. Comey A. M., Hahn D. A. A dictionary of Chemical Solubilities Inorganic. - 2 ed. - New York, The MacMillan Company, 1921. - pp. 885
  2. Lewis R.J. Sax's Dangerous Properties of Industrial Materials. - 12ed., Vol. 1-5. - Wiley, 2012. - pp. 4018-4019
  3. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 1191-1192
  4. Вредные вещества в промышленности: Справочник для химиков, инженеров и врачей. - 7-е изд., Т.3. - Л.: Химия, 1976. - pp. 274-275 [Russian]
  5. Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 168-169 [Russian]
  6. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 110, 664 [Russian]
  7. Химическая энциклопедия. - Т. 3. - М.: Советская энциклопедия, 1992. - pp. 187 [Russian]
  8. Химическая энциклопедия. - Т. 4. - М.: Советская энциклопедия, 1995. - pp. 586-587 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru