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Properties of substance:

2-naphthol

Group of substances:

organic

Physical appearance:

colorless monoclinic crystals

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

C10H8O

Structural formula as text:

C10H7OH

Molar/atomic mass: 144.17

Melting point (°C):

123

Boiling point (°C):

286

Solubility (g/100 g of solvent):

benzene: 4.12 (25°C) [Ref.]
carbon tetrachloride: 0.444 (25°C) [Ref.]
chloroform: soluble [Ref.]
diethyl ether: 76.9 (25°C) [Ref.]
ethanol: 12.5 (25°C) [Ref.]
formic acid 95%: 3.11 (18.6°C) [Ref.]
ligroin: sparingly soluble [Ref.]
sulfur dioxide: sparingly soluble [Ref.]
water: 0.0355 (6.9°C) [Ref.]
water: 0.06416 (20°C) [Ref.]
water: 0.1304 (38.7°C) [Ref.]
water: 0.6733 (80°C) [Ref.]

Density:

1.28 (20°C, g/cm3)

Dissociation:

pKa (1) = 9.63 (20°C, water)

Retention indices for gas chromatography:

1523,8 (phase - DB-5, temperature-programmed conditions, 6 K/min)

Dipole moment (D):

1.3 (20°C)

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

18.88

Heat of combustion (kJ/mol):

4674.4

LD50 (mg/kg):

98 (white mice, )

References:

  1. Clarke's isolation and identification of drugs. - 2ed. - London: Pharmaceutical press, 1986. - pp. 393
  2. Seidell A. Solubilities of organic compounds. - 3ed., vol.2. - New York: D. Van Nostrand Company, 1941. - pp. 659-661
  3. Yalkowsky S.H., Yan H. Handbook of aqueous solubility data. - CRC Press, 2003. - pp. 636
  4. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 164 [Russian]
  5. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 510 [Russian]
  6. Справочник по растворимости. - Т.1, Кн.2. - М.-Л.: ИАН СССР, 1962. - pp. 1034, 1435 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru