Wikipedia
Toluene diisocyanate
Toluene diisocyanate (TDI) is an organic compound with the formula CHCH(NCO). 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 34.1% of the global isocyanate market in 2000, second only to MDI. Approximately 1.4 billion kilograms were produced in 2000.
Toluene diisocyanate (data page)
This page provides supplementary chemical data on Toluene diisocyanate.