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Properties of substance:

3-pyridinecarboxylic acid

Synonyms:

nicotinic acid

Group of substances:

organic

Physical appearance:

colorless needles crystals

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

C6H5NO2

Structural formula as text:

C5H4NCOOH

Molar/atomic mass: 123.10995

Melting point (°C):

235

Decomposition temperature (°C):

260

Solubility (g/100 g of solvent):

diethyl ether: very slightly soluble [Ref.]
ethanol: 4.38 (61°C) [Ref.]
ethanol: 7.6 (78°C) [Ref.]
ethanol 96%: 0.57 (0°C) [Ref.]
ethanol 96%: 0.93 (15°C) [Ref.]
ethanol 96%: 2.7 (38°C) [Ref.]
propylene glycol: soluble [Ref.]
water: 1.3 (15°C) [Ref.]
water: 2.47 (38°C) [Ref.]
water: 4.06 (61°C) [Ref.]
water: 6 (78°C) [Ref.]
water: 9.76 (100°C) [Ref.]

Density:

1.473 (25°C, g/cm3)

Dissociation:

pKa (1) = 4.81 (25°C, water)

LD50 (mg/kg):

7000 (white mice, oral)
7000 (rats, oral)

References:

  1. CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 3-450
  2. Kleemann A. Pharmaceutical Substances. - 2000. - pp. 1432
  3. Stahl P.H., Wermuth C.G. Handbook of Pharmaceutical Salts: Properties, Selection, and Use. - Wiley-VCH, 2002. - pp. 297-298
  4. The Merck Index 11th ed., Merck & Company, 1989. - pp. 1030-1031
  5. Yalkowsky S.H., Yan H. Handbook of aqueous solubility data. - CRC Press, 2003. - pp. 228
  6. Беликов В.Г. Учебное пособие по фармацевтической химии. - М.: Медицина, 1979. - pp. 273 [Russian]
  7. Березовский В.М. Химия витаминов. - М.: Пищевая промышленность, 1973. - pp. 293-294 [Russian]
  8. Вредные вещества в промышленности: Справочник для химиков, инженеров и врачей. - 7-е изд., Т.2. - Л.: Химия, 1976. - pp. 451 [Russian]
  9. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 165 [Russian]
  10. Садыков А. С. Химия алкалоидов Anabasis aphylla. - Ташкент: ИАН УССР, 1956. - pp. 59-72 [Russian]
  11. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 431 [Russian]
  12. Справочник по растворимости. - Т.1, Кн.2. - М.-Л.: ИАН СССР, 1962. - pp. 1212 [Russian]
  13. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 836-837 [Russian]
  14. Химическая энциклопедия. - Т. 3. - М.: Советская энциклопедия, 1992. - pp. 248 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru