Go here to see the spelling of benzene sulfinic acid in czech.


There is more doubt growing in my mind about this. Sulfinic acids and Sulfonic acids are distinct in Polish, Czech and all other languages I have researched.

One is -SO2H and the other is SO3H, and they differ in activity much as sulfite and sulfate do, thus explaining the antioxidant properties claimed for the Sulfinates in literature.