Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Description of key information

Key value for chemical safety assessment

Skin sensitisation

Endpoint conclusion
Endpoint conclusion:
adverse effect observed (sensitising)
Additional information:

The SI values calculated for the substance concentrations 1, 2.5 and 5% were 11.4, 18.5 and 24.7 respectively. These results show that the test substance elicits an SI ≥ 3. The EC3 value (the estimated test substance concentration that will give a SI =3) was established to be between 0 and 1%. Based on these results: - according to the recommendations made in the test guidelines, Reaction products of 1,1’-methylenebis(4-isocyanatocyclohexane) and pentaerythritol triacrylate and pentaerythritol tetraacrylate would be regarded as skin sensitizer. - according to the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) of the United Nations (2011), Reaction products of 1,1’-methylenebis(4-isocyanatocyclohexane) and pentaerythritol triacrylate and pentaerythritol tetraacrylate should be classified as strong skin sensitizer (Category 1, Sub-category 1A). - according to the Regulation (EC) No 1272/2008 on classification, labelling and packaging of substances and mixtures, Reaction products of 1,1’-methylenebis(4-isocyanatocyclohexane) and pentaerythritol triacrylate and pentaerythritol tetraacrylate should be classified as skin sensitizer (Category 1) and labeled as H317: May cause an allergic skin reaction.


Migrated from Short description of key information:
In an OECD TG 429 study, this substance would be regarded as skin sensitizer.

Justification for classification or non-classification

Please see above "Discussion".