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Properties of substance:

trans-o-nitrocinnamic acid

Group of substances:

organic

Physical appearance:

needles crystals

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

C9H7NO4

Structural formula as text:

O2NC6H4CH=CHCOOH

Molar/atomic mass: 193.17

Melting point (°C):

240

Solubility (g/100 g of solvent):

ethanol: soluble (78°C) [Ref.]
water: insoluble [Ref.]

Dissociation:

pKa (1) = 4.15 (25°C, water)

References:

  1. Dictionary of organic compounds. - Vol. 3, naphthacarbazole - zygadenine. - М.: ИИЛ, 1949. - pp. 119
  2. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 732-733 [Russian]
  3. Справочник химика. - Т. 3. - М.-Л.: Химия, 1965. - pp. 91 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru