Contact Process: Sulfuric Acid and Oleum | Vaisala
Sulfuric acid and oleum concentration control. Sulfuric acid and oleum are used for different purposes, e.g. for the production of fertilizers, explosives, dyes, and petroleum products. Sulfuric acid can be sold in the form of various solutions of H 2 SO 4 in water or sulfur xide (SO 3) in H 2 SO 4 which is known as fuming sulfuric acid or ...