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Properties of substance:

1,4-butanediamine

Synonyms:

putrescine

Group of substances:

organic

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

C4H12N2

Structural formula as text:

H2NCH2CH2CH2CH2NH2

Molar/atomic mass: 88.151

Melting point (°C):

27-28

Boiling point (°C):

158-159

Solubility (g/100 g of solvent):

diethyl ether: slightly soluble [Ref.]
ethanol: soluble [Ref.]
water: soluble [Ref.]

Density:

0.877 (25°C, d4)

Reactions of synthesis:

  1. Yeild 70-83%. [Ref.1]
    HOOC(CH2)4COOH + 2HN3 → H2N(CH2)4NH2 + 2N2 + 2CO2
  2. Yeild 60%. [Ref.1]
    H2NCO(CH2)4CONH2 + 2NaClO → H2N(CH2)4NH2 + 2NaCl + 2CO2
  3. Yeild 82%. [Ref.1aster]
    BrCH2CH2CH2CH2Br + 4NH3 → H2NCH2CH2CH2CH2NH2 + 2NH4Br

Dissociation:

pKBH+ (1) = 9.3 (20°C, water)
pKBH+ (2) = 10.84 (20°C, water)

Dipole moment (D):

1.93 (25°C)

Viscosity (mPa·s):

1.915 (25°C)

References:

  1. CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 3-76
  2. Dictionary of organic compounds. - Vol. 3, naphthacarbazole - zygadenine. - М.: ИИЛ, 1949. - pp. 548
  3. Краткая химическая энциклопедия. - Т. 4: Пирометаллургия-С. - М.: Советская энциклопедия, 1965. - pp. 413 [Russian]
  4. Свойства органических соединений: Справочник. - Под ред. Потехина А.А. - Л.: Химия, 1984. - pp. 344-345 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru