Sulfuric acid
From Glossary of Meteorology
sulfuric acid
Strong acid, formula H2SO4, formed as the end product in the oxidation of most sulfur compounds.
Sulfuric acid is a major constituent of acid rain associated with fossil fuel combustion. As a consequence of its low volatility, it can lead to particle formation, and is a major constituent of cloud condensation nuclei and the background aerosol, including the stratospheric sulfate layer.