Petrolite
| Industry | Chemicals, manufacturing |
|---|---|
| Founded | 1930 |
| Founders | William S. Barnickel, Frederick G. Cottrell |
| Defunct | 1997 |
| Fate | Merged with Baker Hughes |
| Successor | Baker Hughes |
| Headquarters | St Louis, Missouri, United States |
| Products | Chemicals |
| Brands | Tret-O-Lite |
Petrolite Corporation was an American manufacturer of chemicals. Founded in 1930 from the merger of the Tret-O-lite Company with the Petroleum Rectifying Company of California (PETRECO), it was subsequently merged into Baker Hughes Incorporated in 1997.