The TDI grade toluene was assessed at $1,109/mt FOB ARA at Friday's close, while nitration grade was assessed at $1,095/mt, thus putting the quality spread at $14/mt.
TDI quality material with a purity of 99.9% is used by the chemical sector to produce polyurethanes. Nitration grade toluene (99.7% purity) is widely used as a solvent and for gasoline blending.
The spread narrowed in the second half of July to as little as $3/mt, when toluene spot prices were being set primarily by the gasoline blending value and the open arbitrage window to the US.