Salt of sulfuric acid. SO42– salt or ester derived from sulfuric acid. Most sulfates are water soluble (the exceptions are lead, calcium, strontium, and barium sulfates), and require a very high temperature to decompose them.
The commonest sulfates seen in the laboratory are copper(II) sulfate (CuSO4), iron(II) sulfate (FeSO4), and aluminum sulfate (Al2(SO4)3). The ion is detected in solution by using barium chloride or barium nitrate to precipitate the insoluble sulfate.A salt or ester of sulphuric acid; SYN. sulphate. US