Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 following study was submitted in support of the skin sensitisation endpoint:

Maurer (1986) TK 11638/1 Skin Sensitization Test in the Guinea Pig. Modified Maximization Test. Report Number: 86106. Report date: 1986-12-18.

The study has been performed to GLP and in line with appropriate guidelines, however as the test material DBT(2-EHMA) is a read-across substance structurally similar to dibutyltin acetate, the study has been assigned a reliability score of 2 in line with the principles reported in Klimisch (1997).


Migrated from Short description of key information:
In a dermal sensitisation study according to OECD 406, 10 week old male and female Pirbright White Guinea Pigs were exposed to TK 11638/1 (DBT 2 -EHMA, CAS No 10584 -98 -2) in a maximisation test. The test substance was found to be sensitising according to 67/548/EEC and should therefore be classified as R43 - May cause sensitisation by skin contact. Due to the similarity between these molecules it is considered justified to read across to this study to dibutyltin di(acetate).

Justification for classification or non-classification

The test substance was found to be sensitising according to 67/548/EEC and should therefore be classified as R43 - May cause sensitisation by skin contact.Accordingly, in line with regulation(EC) No 1272/2008, the substance should be labelled with H317: May cause an allergic skin reaction.