from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Alternative spelling of sulfonic.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Pertaining to, or derived from, a sulphone; -- used specifically to designate any one of a series of acids (regarded as acid ethereal salts of sulphurous acid) obtained by the oxidation of the mercaptans, or by treating sulphuric acid with certain aromatic bases (as benzene).

from The Century Dictionary and Cyclopedia

  • Containing the acid radical SO2OH.


Sorry, no etymologies found.


  • University and here he discovered the first hydrazine base, phenylhydrazine and demonstrated its relationship to hydrazobenzene and to a sulphonic acid described by Strecker and

    Emil Fischer - Biography

  • The following analyses of the isolated lignin sulphonic acid are cited:

    Researches on Cellulose 1895-1900

  • The author's application of the soda salt of the lignone sulphonic acid as a reducing agent in chrome-mordanting wool and woollen goods (D.R.P. 99,682) is more successful in practice, and its industrial development shows satisfactory progress.

    Researches on Cellulose 1895-1900

  • (CH_3) _2N·C_6H_4·N_2·C_6H_4SO_3Na, is the sodium salt of para-dimethylaminobenzene-azo-benzene sulphonic acid.

    Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 1 "Austria, Lower" to "Bacon"

  • Berthelot has also investigated the action of ordinary concentrated sulphuric acid on acetylene, and obtained various sulphonic derivatives.

    Acetylene, the Principles of Its Generation and Use

  • The aromatic compounds form, as a rule, sulphonic acids with much greater facility.

    Synthetic Tannins

  • Like other "strong" and "weak" acids this sulphonic acid exercises a strongly swelling influence on pelt.

    Synthetic Tannins

  • The sulphonic acid group may also be directly introduced either by concentrated, or by fuming sulphuric acid, or by elimination of halogen by the action of sodium or silver sulphite on the halogen derivatives of the aliphatic compounds.

    Synthetic Tannins

  • Similarly, halogenated compounds and alcohols react with concentrated or fuming sulphuric acid forming sulphonic and hydrosulphonic acids respectively.

    Synthetic Tannins

  • All natural tannins are unaffected by this treatment, ligninsulphonic and other sulphonic acids cause opalescence.

    Synthetic Tannins


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