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Properties of substance:

benzenesulfinic acid

Group of substances:

organic

Physical appearance:

white prismatic crystals

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

C6H6O2S

Structural formula as text:

C6H5SO2H

Molar/atomic mass: 142.18

Melting point (°C):

64.5-65

Decomposition temperature (°C):

100

Solubility (g/100 g of solvent):

benzene: soluble [Ref.]
diethyl ether: soluble [Ref.]
ethanol: soluble [Ref.]
petroleum ether: insoluble [Ref.]
water: sparingly soluble [Ref.]

Dissociation:

pKa (1) = 1.5 (25°C, water)

References:

  1. CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 3-36
  2. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 524-525 [Russian]
  3. Справочник химика. - Т. 3. - М.-Л.: Химия, 1965. - pp. 86 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru