Registration Dossier
Registration Dossier
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EC number: 931-312-3 | CAS number: 53880-05-0
Endpoint summary
Administrative data
Description of key information
Additional information
3-isocyanatomethyl-3,5,5-trimethylcyclohexyl isocyanate homopolymer hydrolyses upon contact with water. The diisocyanate groups of the substance react by forming amines and CO2. The amines formed may react further with unreacted diisocyanate groups of 3-isocyanatomethyl-3,5,5-trimethylcyclohexyl isocyanate homopolymer resulting in oligo- and subsequently polyurea components.Test substance solutions of 3 -isocyanatomethyl-3,5,5 -trimethylcyclohexyl isocyanate homopolymer were prepared at nominal concentrations that were some orders of magnitude higher than the maximum water solubility. The solutions were stirred for 18 to 24 hours and insoluble particles were filtered off. Substance concentrations were determined as DOC/TOC. No effects were observed in any of the tested species (Daphnia, algae, fish) up to the limit of the water solubility (1.5 mg/L) of the test substance. The lowest endpoint derived for fish (Cyprinus carpio) LC50, 96 h, was >1.5 mg/L. No mortaility of any fish was observed at this concentration (highest soluble loading of test substance).
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