| Company type | Merged |
|---|---|
| Industry | chemical |
| Founded | Chicago, Illinois (1920) |
| Founder | Robert Wishnick |
| Defunct | 1999 |
| Fate | Acquired by Crompton Corporation |
| Successor | Crompton Corporation |
| Headquarters | , |
Area served | International |
| Products | petroleum products, specialty chemicals, materials for special applications |
Number of employees | 8000 |
Witco Corporation (NYSE: WIT) was a manufacturer of specialty chemicals, petroleum products, and engineered materials headquartered in New York, New York. In 1999, Witco merged with Crompton & Knowles to form Crompton Corporation.