2-Hexanone - C₆H₁₂O is a volatile organic compound (VOC) which are a large family of carbon-containing compounds which are emitted into the atmosphere from a variety of industrial processes. 2-hexanone may have the potential to contribute directly to global warming by absorbing infrared radiation from the earth's surface. In general the more complex a VOC, the greater its ability to absorb infrared radiation. 2-hexane may also contribute indirectly to global warming through the change in concentration of ozone, which is a potent greenhouse gas. 
Atmospheric Chemistry Glossary