Toluene diisocyanates (TDIs) are synthetic organic chemicals of low relative molecular mass (174.17). They are colourless to pale yellow liquids, at room temperature, with a distinct pungent odour detectable around 0.7 ...

Toluene is the common name for methylbenzene. It is a clear, colourless liquid that is volatile (vapour pressure of 3.82 kPa), flammable, and explosive in air. The technical product may contain small amounts of benzene. ...