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Anions with the general formula RSO2O− are called sulfonates. Due to the stability of sulfonate anions, the cations of sulfonate salts such as scandium triflate have application as Lewis. — “Sulfonate - Wikipedia, the free encyclopedia”, en.wikipedia.org
It may be prepared by polymerization or copolymerization of sodium styrene sulfonate or by sulfonation of polystyrene. Micrograph showing sodium polystyrene sulfonate crystals (purple – at top of the image) in the biopsy of a colonic mass. — “Sodium polystyrene sulfonate - Wikipedia, the free encyclopedia”, en.wikipedia.org
Perfluorooctanesulfonic acid (PFOS), or perfluorooctane sulfonate, is a man-made fluorosurfactant and global pollutant. The C8F17 subunit of PFOS is hydrophobic and lipophobic, like other fluorocarbons, while the sulfonic acid/sulfonate group adds polarity. — “Perfluorooctanesulfonic acid - Wikipedia, the free encyclopedia”, en.wikipedia.org