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Properties of substance:

1H-pyrrole-2-carboxylic acid

Group of substances:

organic

Physical appearance:

monoclinic crystals

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

C5H5NO2

Structural formula as text:

C4H4NCOOH

Molar/atomic mass: 111.0987

Melting point (°C):

191.5

Boiling point (°C):

208.5

Decomposition temperature (°C):

191.5

CAS №: 634-97-9

Solubility (g/100 g of solvent):

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

Dissociation:

pKa (1) = 4.4 (25°C, water)

References:

  1. CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 3-478
  2. Справочник химика. - 2 изд., Т. 2. - Л.-М.: Химия, 1964. - pp. 896-897 [Russian]
  3. Справочник химика. - Т. 3. - М.-Л.: Химия, 1965. - pp. 93 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru