sulphonic, a. Chem.
(sʌlˈfɒnɪk)
[f. sulphone + -ic.]
Containing the radical SO2. OH (called the sulphonic group or sulphonic radical).
| 1873 Jrnl. Chem. Soc. N.S. XI. 277 Action of Phosphorus Pentachloride on Sulphonic Acids. 1881 Athenæum 12 Nov. 634/3 Sulphonic Acids derived from Isodinaphthyl. 1902 Encycl. Brit. XXVI. 728/2 The introduction..of the sulphonic group into the aminic group. |