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Toluene Diisocyanate (TDI)

An organic compound with the formula CH3C6H3(NCO)2. 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. 2,4-TDI is prepared in three steps from toluene via dinitrotoluene and 2,4-diaminotoluene (TDA). Finally, the TDA is subjected tophosgenation, i.e., treatment with phosgene to form TDI.

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Description

Uses

  • Production of flexible polyurethane foams

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