Definition of "sulphonic" [sul•phon•ic]

• Alternative spelling of sulfonic. (adjective)

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