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):

H4N2

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/cm3)

Reactions of synthesis:

  1. [Ref.1]
    (N2H6)SO4 + 2NH3 → (NH4)2SO4 + N2H4
  2. [Ref.1]
    N2 + 4V(OH)2 + 4H2O → N2H4 + 4V(OH)3

Reactions:

  1. Yeild 100%. [Ref.1]
    2C(NO2)4 + N2H4 + 4KOH → 2KC(NO2)3 + 2KNO2 + N2 + 4H2O

Vapour pressure (Torr):

10 (18.9°C)
100 (61.8°C)

Electrode potential:

N2 + 4H2O + 4e- → N2H4 + 4OH-, E = -1.16 V (water, 25°C)

Dissociation:

pKBH+ (1) = 5.77 (°C, water)
pKBH+ (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 ΔfH0 (298.15 K, kJ/mol):

50.5 (l)

Standard molar Gibbs energy of formation ΔfG0 (298.15 K, kJ/mol):

149.2 (l)

Standard molar entropy S0 (298.15 K, J/(mol·K)):

121 (l)

Molar heat capacity at constant pressure Cp (298.15 K, J/(mol·K)):

98.83 (l)

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

12.66

Enthalpy (heat) of vaporization at boiling point ΔvapH (kJ/mol)

41.8 (l) [Ref.]

Enthalpy (heat) of vaporization ΔvapH (kJ/mol)

44.7 (l) [Ref.]

LD50 (mg/kg):

60 (rats, oral)
59 (mice, oral)

Critical temperature (°C):

380

Critical pressure (MPa):

14.7

References:

  1. Holleman A.F., Wiberg E., Wiberg N. Lehrbuch der Anorganischen Chemie. - Berlin: Walter de Gruyter, 1995. - pp. 675-680
  2. Urbanski T. Chemistry and technology of explosives. - vol.3. - Warszawa, 1967. - pp. 305-308
  3. Вредные вещества в промышленности: Справочник для химиков, инженеров и врачей. - 7-е изд., Т.3. - Л.: Химия, 1976. - pp. 92-94 [Russian]
  4. Гутман В. Химия координационных соединений в неводных растворах. - М.: Мир, 1971. - pp. 65-67 [Russian]
  5. Девяткин В.В., Ляхова Ю.М. Химия для любознательных, или о чем не узнаешь на уроке. - Ярославль: Академия Холдинг, 2000. - pp. 55 [Russian]
  6. Коровин Н.В. Гидразин. - М.: Химия, 1980 [Russian]
  7. Некрасов Б.В. Основы общей химии. - Т.1. - М.: Химия, 1973. - pp. 403-404 [Russian]
  8. Одрит Л., Огг Б. Химия гидразина. - Нью-Йорк, 1951 [Russian]
  9. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 51 [Russian]
  10. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 912-916 [Russian]
  11. Химическая энциклопедия. - Т. 1. - М.: Советская энциклопедия, 1988. - pp. 547-548 [Russian]
  12. 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