Hydrofluorosilicic Acid (HFS): The Industrial Buyer’s Guide to Uses, Grades, Safety & the 2026 Supply Squeeze
Hydrofluorosilicic acid (HFS, H2SiF6, CAS 16961-83-4) is a corrosive, ~23% aqueous fluorine acid recovered as a byproduct of phosphate-fertilizer manufacturing. About 63% of U.S. supply goes...