Toluene Di-Isocyanates (TDI)

Toluene diisocyanate (TDI) is a chemical used in the production of polyurethanes, primarily for flexible foam applications including furniture, bedding and carpet underlay, as well as packaging applications. TDI is also used in the manufacture of coatings, sealants, adhesives and elastomers. In transportation applications, TDI helps produce lighter automobile parts, saving weight, which leads to improvements in fuel efficiency and thus energy conservation.

PropertySpecificationAnalytical Method
Appearance @ 30 ˚CClear liquidVisual
Purity, %wt.Min. 99.5GC
2,4-TDI Content, %wt.80.0 ± 1.0ASTM D4660.00
2,6-TDI Content, %wt.20.0 ± 1.0ASTM D4660.00
Total Acidity, ppm by wt.Max. 40ASTM D5629.05
Hydrolysable chlorine, ppm by wt.Max. 60ASTM D4663.98
Total chlorine, ppm by wt.Max. 500ASTM D4661.03 @ 25 ˚C1.22ASTM D4659.03
Nitro Isocyanate compounds, ppmMax.30H900.5800

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