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Properties of substance:

5-aminosalicylic acid

Group of substances:

organic

Physical appearance:

colorless needles crystals

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

C7H7NO3

Structural formula as text:

HO(H2N)C6H3COOH

Molar/atomic mass: 153.135

Melting point (°C):

280

Decomposition temperature (°C):

283

Solubility (g/100 g of solvent):

carbon disulphide: soluble [Ref.]
ethanol: insoluble [Ref.]
water: difficulty soluble (100°C) [Ref.]

Dissociation:

pKBH+ (1) = 2.74 (25°C, water)
pKa (1) = 5.84 (25°C, water)

LD50 (mg/kg):

5000 (mice, oral)

References:

  1. Dictionary of organic compounds. - vol.1, Abietic acid - Dypnone. - London, 1946. - pp. 127
  2. Journal of Physical and Chemical Reference Data. - 2013. - Vol. 42, No. 3. - pp. 033103-139 - 033103-141
  3. Lewis R.J. Sax's Dangerous Properties of Industrial Materials. - 11ed. - Wiley-interscience, 2004. - pp. 219
  4. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 938-939 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru