TDI 80/20, or Toluene Diisocyanate, is a chemical compound primarily used in the production of flexible polyurethane foam. It's a clear, pale yellow liquid with a sharp odor, consisting of a mixture of 80% 2,4-TDI and 20% 2,6-TDI isomers. Beyond foam, it finds applications in elastomers, synthetic leather, coatings, and adhesives