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Properties of substance:

3-pyridinecarboxamide

Synonyms:

niacinamide
nicotinamide
vitamin PP

Group of substances:

organic

Physical appearance:

colorless crystals

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

C6H6N2O

Structural formula as text:

C5H4NCONH2

Molar/atomic mass: 122.13

Melting point (°C):

131

Solubility (g/100 g of solvent):

benzene: sparingly soluble [Ref.]
chloroform: very slightly soluble [Ref.]
diethyl ether: sparingly soluble [Ref.]
ethanol: 66.6 (20°C) [Ref.]
glycerol: 10 (20°C) [Ref.]
water: 100 (20°C) [Ref.]

Density:

1.4 (25°C, g/cm3)

Refractive index (nD):

1.466 (25°C)

Vapour pressure (Torr):

0.0005 (60°C)
0.0005 (157°C)

LD50 (mg/kg):

5295 (rats, oral)
4350 (mice, oral)

References:

  1. CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 3-474
  2. Kleemann A. Pharmaceutical Substances. - 2000. - pp. 1431
  3. The Merck Index 11th ed., Merck & Company, 1989. - pp. 1025-1026
  4. Беликов В.Г. Учебное пособие по фармацевтической химии. - М.: Медицина, 1979. - pp. 273 [Russian]
  5. Березовский В.М. Химия витаминов. - М.: Пищевая промышленность, 1973. - pp. 293-294 [Russian]
  6. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 165 [Russian]
  7. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 836-837 [Russian]
  8. Токсикологический вестник. - 1997. - №3. - pp. 36 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru