Therminol is a synthetic heat transfer fluid[1] produced by Eastman Chemical Company.
In 1997, the chemical businesses of Monsanto were spun off to form a new company called Solutia Inc.
FR series Therminol heat transfer fluids contained PCBs, which imparted fire resistance.
No form of Therminol heat transfer fluids have contained PCBs since that time.
[5] Polychlorinated biphenyl was banned by the United States Congress in 1979 and the Stockholm Convention on Persistent Organic Pollutants in 2001.