It's possible you're thinking of:
* Sulfuric acid (H₂SO₄): This strong acid is used in many industrial processes, including the production of fertilizers, detergents, and batteries. It is also used in refining petroleum and manufacturing explosives.
* Nitric acid (HNO₃): Another strong acid used in many industrial applications. It is used in the production of fertilizers, explosives, and plastics. It is also used in the refining of metals and the manufacture of dyes.
If you're looking for a specific compound, please clarify what you are looking for.
