Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

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Additional information

Releases into the environment may occur during production of isophoronediisocyanate, during formulation and use of formulations as well as from its use as a monomer for the production of polymers or other downstream products.

Distribution modelling according to Mackay Level I indicates that the main target compartments will be soil and sediment with approximately 43 % each, followed by water with about 10 %.The calculated Henry’s law constant of 0.941 Pa m3/mol (vapour pressure x molecular weight / water solubility) at 20-23 °C indicates low volatility from aqueous solution. Both Henry’s law constant and adsorption / desorption constant cannot be studied due to rapid hydrolysis of isophorone diisocyanate. Environmental distribution considerations for isophorone diisocyanate are of little relevance because the reaction with water is expected to eliminate the substance from the environment rapidly.