Registration Dossier

Diss Factsheets

Environmental fate & pathways

Henry's Law constant

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

Hydrolysis inhibits establishing a steady concentration in the aqueous phase. Therefore a study is technically not feasible.
Henry´s law constant was estimated using HENRYWIN v. 3.20 to be 1.25 Pa * 10 E-09 Pa m3/mol at a temperature of 25 °C. For the calculation the main constituent of HDI Trimer (Isocyanaurate , n=3) was chosen.

Key value for chemical safety assessment

Henry's law constant (H) (in Pa m³/mol):
at the temperature of:
25 °C

Additional information

Environmental distribution considerations for diisocyanate are of little relevance because the reaction with water is expected to eliminate the substance from the environment rapidly.