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Properties of substance:

1,1-dimethylhydrazine

Group of substances:

organic

Physical appearance:

colorless fuming liquid

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

C2H8N2

Structural formula as text:

(CH3)2NNH2

Molar/atomic mass: 60.098

Melting point (°C):

-58

Boiling point (°C):

63.9

Solubility (g/100 g of solvent):

diethyl ether: soluble [Ref.]
dimethylformamide: soluble [Ref.]
ethanol: soluble [Ref.]
organic solvents: soluble [Ref.]
water: soluble [Ref.]

Not numerical data:

hygroscopic

Density:

0.791 (22°C, g/cm3)

Refractive index (nD):

1.4075 (22°C)

Dissociation:

pKBH+ (1) = 7.12 (25°C, water)
pKBH+ (1) = 7.34 (10°C, water)

Dipole moment (D):

1.68

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

48.9 (l)

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

206.4 (l)

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

198 (l)

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

164.1 (l)

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

84.1 (g)

LD50 (mg/kg):

122 (rats, oral)
265 (mice, oral)

References:

  1. CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 5-23
  2. Urbanski T. Chemistry and technology of explosives. - vol.3. - Warszawa, 1967. - pp. 308-309
  3. Бадюгин И.С. Экстремальная токсикология. - М.: ГЭОТАР-Медиа, 2006. - pp. 173-174 [Russian]
  4. Вредные вещества в промышленности: Справочник для химиков, инженеров и врачей. - 7-е изд., Т.3. - Л.: Химия, 1976. - pp. 95-96 [Russian]
  5. Другов Ю.С., Родин А.А. Мониторинг органических загрязнений природной среды. - СПб.: Наука, 2004. - pp. 700-706 [Russian]
  6. Иоффе Б.В., Кузнецов Б.А., Потехин А.А. Химия органических производных гидразина. - Л.: Химия, 1979. - pp. 50 [Russian]
  7. Токсикологический вестник. - 1999. - №6. - pp. 39 [Russian]
  8. Химическая энциклопедия. - Т. 2. - М.: Советская энциклопедия, 1990. - pp. 62-63 [Russian]
  9. Химический энциклопедический словарь. - Под ред. Кнунянц И.Л. - М.: Советская энциклопедия, 1983. - pp. 170 [Russian]
  10. Химмотология ракетных и реактивных топлив. - Под ред. Браткова А.А. - М.: Химия, 1987. - pp. 99-105 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru