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Properties of substance:

benzenesulfonic acid

Synonyms:

besylic acid

Physical appearance:

colorless leaflets crystals

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

C6H6O3S

Structural formula as text:

C6H5SO3H

Molar/atomic mass: 158.18

Melting point (°C):

50

Destruction point (°C):

136

Solubility (g/100 g of solvent):

benzene: difficulty soluble [Ref.]
water: 48.85 (31.4°C) [Ref.]
water: 49.17 (42.6°C) [Ref.]
water: 49.89 (61.3°C) [Ref.]
diethyl ether: insoluble [Ref.]
acetic acid: soluble [Ref.]
ethanol: very soluble [Ref.]

    Dissociation:

    pKa (1) = 0.7 (25°C, water)

    LD50 (mg/kg):

    890 (rats, oral)

    References:

    1. CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 3-36
    2. Lewis R.J. Sax's Dangerous Properties of Industrial Materials. - 11ed. - Wiley-interscience, 2004. - pp. 366-367
    3. Yalkowsky S.H., Yan H. Handbook of aqueous solubility data. - CRC Press, 2003. - pp. 260
    4. Краткая химическая энциклопедия. - Т. 1: А-Е. - М.: Советская энциклопедия, 1961. - pp. 415
    5. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 438
    6. Справочник химика. - Т.2. - Л.-М.: Химия, 1964. - pp. 524-525
    7. Справочник химика. - Т.3. - М.-Л.: Химия, 1965. - pp. 86
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      © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru