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Properties of substance:

2,4,6-trinitrobenzoic acid

Group of substances:

organic

Physical appearance:

yellow rhombic crystals

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

C7H3N3O8

Structural formula as text:

(O2N)3C6H2COOH

Molar/atomic mass: 257.12

Melting point (°C):

220

Decomposition temperature (°C):

228.7

Solubility (g/100 g of solvent):

acetone: 22.12 (25°C) [Ref.]
benzene: 0.31 (25°C) [Ref.]
carbon disulphide: 0.14 (25°C) [Ref.]
carbon tetrachloride: 0.07 (25°C) [Ref.]
chloroform: 0.37 (25°C) [Ref.]
diethyl ether: 14.7 (25°C) [Ref.]
ethanol: 26.6 (25°C) [Ref.]
ethanol 96%: 27.53 (25°C) [Ref.]
ethyl acetate: 21.05 (25°C) [Ref.]
methanol: 50.69 (25°C) [Ref.]
toluene: 0.38 (25°C) [Ref.]
water: 2.05 (23°C) [Ref.]
water: 4.18 (90°C) [Ref.]

Dissociation:

pKa (1) = 0.65 (25°C, water)

References:

  1. Альберт А., Сержент Е. Константы ионизации кислот и оснований. - М.-Л.: Химия, 1964. - pp. 122 [Russian]
  2. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 183 [Russian]
  3. Справочник по растворимости. - Т.1, Кн.2. - М.-Л.: ИАН СССР, 1962. - pp. 1474 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru