Toluene Diisocyanate (TDI)

Toluene Diisocyanate is a synthetic mixture of the 2,4- and 2,6-isomers is a volatile, colorless to pale yellow liquid that is soluble in many organic solvents. These isomers are used primarily in the synthesis of polyurethane foams.

Data Sheet

Properties Specification Analytical Method
Purity (wt%) Min 99.5 GC
2.4-TDI Content (wt%) 80 ±1 ASTM D 4660
2.6 TDI Content (wt%) 20 ±1 ASTM D 4660
Total Acidity (ppm by wt%) Max 40 ASTM D 5629-05
Hydrolysable chlorine (ppm by wt%) Max 120 ASTM D 4663-98
Total chlorine (ppm by wt%) Max 500 ASTM D 4661-03
Color (APHA) Max 25 ASTM D 4877-04°C 1.22 ±0.02 ASTM D 4659-03
Nitro Isocyanate Compounds (ppm) Max 30 H900.5800


Bulk or in 220 Lit steel drums, each 4 drums strapped on a pallet.


  • Rail
  • Land
  • Sea


  • Flexible foams – used for the fabrication of bedding, furniture, automotive seating, flexible packaging and carpet underlay; this is the largest market application for TDI
  • “Foamed-in-place” polyurethane plastics – ranging from soft and sponge-like to hard and porous for use in furniture, packaging, insulation and boat building
  • Polyurethane coatings – used on leather, wire, tank linings and masonry
  • Elastomers – used to produce adhesives, films and linings, and abrasive wheels and other mechanical items that require abrasion and solvent resistance
  • Urethane sealants – used in construction applications
  • Cast elastomers – for production of articles such as roller blade wheels