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Properties of substance:

4-aminopyridine

Group of substances:

organic

Physical appearance:

colorless needles crystals

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

C5H6N2

Structural formula as text:

H2NC5H4N

Molar/atomic mass: 94.12

Melting point (°C):

159

Boiling point (°C):

273

Solubility (g/100 g of solvent):

benzene: soluble [Ref.]
diethyl ether: soluble [Ref.]
ethanol: soluble [Ref.]
ligroin: difficulty soluble [Ref.]
water: soluble [Ref.]

Dissociation:

pKBH+ (1) = 9.114 (25°C, water)
pKa (1) = 26.7 (20°C, dimethylsulfoxide)

LD50 (mg/kg):

7.5 (pigeons, oral)
21 (rats, oral)
6.5 (rats, intraperitoneal)
5 (mice, subcutaneous)
10 (mice, intraperitoneal)

References:

  1. CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 3-474
  2. Lewis R.J. Sax's Dangerous Properties of Industrial Materials. - 11ed. - Wiley-interscience, 2004. - pp. 217
  3. Мельников Н.Н. Пестициды: химия, технология и применение. - М.: Химия, 1987. - pp. 513 [Russian]
  4. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 884-885 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru