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Properties of substance:

potassium cyanate



skc-file

Group of substances:

inorganic

Physical appearance:

colorless tetragonal crystals

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

CKNO

Structural formula as text:

KOCN

Molar/atomic mass: 81.12

Decomposition temperature (°C):

700

Solubility (g/100 g of solvent):

ammonia liquid : 1.7 (25°C) [Ref.]
benzene: 0.18 (80°C) [Ref.]
dimethylformamide: 0.12 (25°C) [Ref.]
ethanol: 0.16 (0°C) [Ref.]
ethanol 80%: 1.9 (0°C) [Ref.]
phosphorus(V) trichloride oxide: 0.048 (20°C) [Ref.]
propylene carbonate: 0.0123 (25°C) [Ref.]
propylene carbonate: 0.01379 (30°C) [Ref.]
propylene carbonate: 0.01558 (35°C) [Ref.]
propylene carbonate: 0.01898 (40°C) [Ref.]
propylene carbonate: 0.02028 (45°C) [Ref.]
water: 75.13 (25°C) [Ref.]

Density:

2.048 (16°C, g/cm3)

Reactions:

  1. [Ref.1]
    2KNCO + 3H2O → K2CO3 + CO2 + 2NH3

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

-412.1 (s)

LD50 (mg/kg):

320 (mice, intraperitoneal)

References:

  1. Armarego W. L. F. Purification of Laboratory Chemicals. - 7ed. - 2013. - pp. 600
  2. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 723
  3. Вредные вещества в промышленности: Справочник для химиков, инженеров и врачей. - 7-е изд., Т.3. - Л.: Химия, 1976. - pp. 273-274 [Russian]
  4. Карапетьянц М.Х., Дракин С.И. Общая и неорганическая химия. - М.: Химия, 1981. - pp. 389 [Russian]
  5. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 694 [Russian]
  6. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 88-89 [Russian]
  7. Химическая энциклопедия. - Т. 2. - М.: Советская энциклопедия, 1990. - pp. 290-291 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru