CIPDB › China Industry › Chemicals › Chemical Reagent
Chemical 99% Purity Toluene Diisocyanate CAS 584-84-91
Chemical ReagentTdiToluene Diisocyanate
Shandong Arctic Chemical Co., Ltd.
Preview:
Product Description China Factory CAS No 584-84-9 99% Toluene Diisocyanate TdiProduct DescriptionToluene diisocyanate (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 34.1% of the global isocyanate market in 2000, second only to MDI. Approximately 1.4 billion kilograms were produced in 2000. All isomers of TDI are colorless, although commercial samples can appear yellow.2,4-TDI is prepared in three steps from toluene via dinitrotoluene and 2,4-diaminotoluene (TDA). Finally, the TDA is subjected to phosgenation, i.e., treatment with phosgene to form TDI. This final step produces HCl as a byproduct and is a major source of industrial hydrochloric acid.Distillation of the raw TDI mixture produces an 80:20 mixture of 2,4-TDI and 2,6-TDI, known as TDI (80/20). Differentiation or separation of the TDI (80/20) can be used to produce pure 2,4-TDI and a 65:35 mixture of 2,4-TDI and 2,6-TDI, known as TDI (65/35).Detailed Photos Company information
Purchasing Agent
Note: Send your message to supplier or manufacturer.
Welcome to our Professional and comprehensive procurement services...