Main page (Russian)
Search in database (English)
Properties of substance:
hydrazine
skc-file
Group of substances:
inorganic
Physical appearance:
colorless liquid
Empirical formula (Hill's system for organic substances):
H
4
N
2
Structural formula as text:
N2H4
Molar/atomic mass: 32.05
Melting point (°C):
2
Boiling point (°C):
113.5
Solubility (g/100 g of solvent):
ammonia liquid
: miscible [
Ref.
]
ethanol
: soluble [
Ref.
]
water
: miscible [
Ref.
]
Multicomponent solubility (in wt%):
(layer 1): water 13.%, hydrazine 77.5%, sodium hydroxide 9.3%, (layer 2): water 29.5%, hydrazine 19.%, sodium hydroxide 51.4%, 60 °C [
Ref.
]
Numerical data:
Year of discovery: 1895
Density:
1.008 (20°C, g/cm
3
)
Reactions of synthesis:
[
Ref.1
]
(N
2
H
6
)SO
4
+ 2NH
3
→ (NH
4
)
2
SO
4
+ N
2
H
4
[
Ref.1
]
N
2
+ 4V(OH)
2
+ 4H
2
O → N
2
H
4
+ 4V(OH)
3
Reactions:
Yeild 100%. [
Ref.1
]
2C(NO
2
)
4
+ N
2
H
4
+ 4KOH → 2KC(NO
2
)
3
+ 2KNO
2
+ N
2
+ 4H
2
O
Vapour pressure (Torr):
10 (18.9°C)
100 (61.8°C)
Electrode potential:
N
2
+ 4H
2
O + 4e
-
→ N
2
H
4
+ 4OH
-
, E = -1.16 V (water, 25°C)
Dissociation:
pK
BH
+
(1) = 5.77 (°C, water)
pK
BH
+
(2) = -1 (°C, water)
Permittivity (dielectric constant):
58 (25°C)
Viscosity (mPa·s):
1.21 (5°C)
0.91 (25°C)
Surface tension (mN/m):
66.7 (25°C)
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
50.5 (l)
Standard molar Gibbs energy of formation Δ
f
G
0
(298.15 K, kJ/mol):
149.2 (l)
Standard molar entropy S
0
(298.15 K, J/(mol·K)):
121 (l)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
98.83 (l)
Molar enthalpy (heat) of fusion Δ
fus
H (kJ/mol):
12.66
Enthalpy (heat) of vaporization at boiling point Δ
vap
H (kJ/mol)
41.8 (l) [
Ref.
]
Enthalpy (heat) of vaporization Δ
vap
H (kJ/mol)
44.7 (l) [
Ref.
]
LD
50
(mg/kg):
60 (rats, oral)
59 (mice, oral)
Critical temperature (°C):
380
Critical pressure (MPa):
14.7
References:
Holleman A.F., Wiberg E., Wiberg N. Lehrbuch der Anorganischen Chemie. - Berlin: Walter de Gruyter, 1995. - pp. 675-680
Urbanski T. Chemistry and technology of explosives. - vol.3. - Warszawa, 1967. - pp. 305-308
Вредные вещества в промышленности: Справочник для химиков, инженеров и врачей. - 7-е изд., Т.3. - Л.: Химия, 1976. - pp. 92-94 [Russian]
Гутман В. Химия координационных соединений в неводных растворах. - М.: Мир, 1971. - pp. 65-67 [Russian]
Девяткин В.В., Ляхова Ю.М. Химия для любознательных, или о чем не узнаешь на уроке. - Ярославль: Академия Холдинг, 2000. - pp. 55 [Russian]
Коровин Н.В. Гидразин. - М.: Химия, 1980 [Russian]
Некрасов Б.В. Основы общей химии. - Т.1. - М.: Химия, 1973. - pp. 403-404 [Russian]
Одрит Л., Огг Б. Химия гидразина. - Нью-Йорк, 1951 [Russian]
Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 51 [Russian]
Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 912-916 [Russian]
Химическая энциклопедия. - Т. 1. - М.: Советская энциклопедия, 1988. - pp. 547-548 [Russian]
Химмотология ракетных и реактивных топлив. - Под ред. Браткова А.А. - М.: Химия, 1987. - pp. 98-105 [Russian]
What information do you need?
© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru