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Properties of substance:
calcium cyanamide
Group of substances:
inorganic
Physical appearance:
colorless trigonal crystals
Empirical formula (Hill's system for organic substances):
CCaN
2
Structural formula as text:
CaCN2
Molar/atomic mass: 80.1
Melting point (°C):
1300
Sublimation point (°C):
1200
CAS №: 156-62-7
Solubility (g/100 g of solvent):
ethanol
: insoluble [
Ref.
]
water
: 2.5 (25°C) [
Ref.
]
Density:
2.29 (20°C, g/cm
3
)
Reactions:
[
Ref.1
]
CaCN
2
+ C → CaC
2
+ N
2
Standard molar enthalpy (heat) of formation Δ
f
H (298 K, kJ/mol)
-350.619 (s) [
Ref.
]
Standard molar Gibbs energy of formation Δ
f
G (298 K, kJ/mol)
-303.755 (s) [
Ref.
]
Standard molar entropy S (298 K, J/(mol·K))
81.588 (s) [
Ref.
]
Molar heat capacity at constant pressure C
p
(298 K, J/(mol·K))
83.241 (s) [
Ref.
]
LD
50
(mg/kg):
900 (rats, oral)
References:
CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 3-90
Бьюкенен Дж. Г. Цианистые соединения и их анализ. - Л., 1933. - pp. 92-95 [Russian]
Вредные вещества в промышленности: Справочник для химиков, инженеров и врачей. - 7-е изд., Т.3. - Л.: Химия, 1976. - pp. 269-271 [Russian]
Кузнецов Л.А. Производство карбида кальция, цианамида кальция и цианистого плава. - М.-Л.: ГНТИХЛ, 1940. - pp. 159-164, 182 [Russian]
Миллер С.А. Ацетилен, его свойства, получение и применение. - Т.1. - Л.: Химия, 1969. - pp. 242-244 [Russian]
Некрасов Б.В. Основы общей химии. - Т.1. - М.: Химия, 1973. - pp. 524 [Russian]
Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 96-97 [Russian]
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© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru