Chemical & Material
Tolylenediisocyanate
Toluenediisocyanate (TDI) is an organic compound with the formula CH3C6H3(NCO)2. Two of the six possible isomers are commercially important: 2,4-TDI (CAS: 584-84-9) and 2,6-TDI (CAS: 91-08-7). 2,4-TDI is produced in the pure state, but TDI is often marketed as 80/20 and 65/35 mixtures of the 2,4 and 2,6 isomers respectively. It is produced on a large scale, accounting for more than 30% of the global isocyanate market, second only to MDI. All isomers of TDI are colorless,…
- Types
- TDI 80/20 · TDI 65/35 · TDI 100
- Applications
- Flexible Foam · Coatings · Adhesives and Sealants
5 editions31 December 2025