RT Report
T1 Toluene Diisocyanates: Environmental Health Criteria 75
A1 United Nations Environment Programme, 
A1 World Health Organization, 
A1 International Labour Organisation, 
K1 chemical
K1 environmental health
K1 carcinogen
K1 toxic substance
K1 epidemiology
K1 cancer
K1 toluene
SN 92 4 154275 6
YR 1987
FD 1987
LK https://wedocs.unep.org/handle/20.500.11822/29373
UL https://wedocs.unep.org/handle/20.500.11822/29373
NO 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 mg/rn 3 , which is well above current exposure limits. The different commercial grades solidify at between 4.7 'C and 22 'C and boil at 251 'C at 760 mmHg. Toluene diisocyanates react with water to form polyureas, carbon dioxide gas, and small amounts of diaminotoluenes, depending on the amount of water present. They also react with basic chemicals, including proteins.
DS UN Environment Document Repository
RD Sep 17, 2026