Good quality ,best price ! sgs,ciq,iso Product Toluene diisocyanate 80/20 Unit Specification Result Purity(WT) % >99.5% 99.62 Isomer Ration(2.4/2.6) 80/20 Chloride Anion(WT) % <0.01 0.008 Acidity(As HCL) % <0.004 0.0035 Color Saturation(APHA) <30 27 TDI is an aromatic isocyanate, a precursor to Polyurethanes (PU) that mostly used for making flexible foams.