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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

Dissociation constant

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Administrative data

Link to relevant study record(s)

Description of key information

the calculated pKa values are in the range of -7.28 to -2.13 for the sulphonated moieties, ca 4.46 for the anilines and ca 8.7/9 for diethanolamine/ethanolamine functional groups.

Key value for chemical safety assessment

Additional information

Leucophor 1111X is expected to be completely dissociated in aquatic compartment and that the ionic species are stable. In acid pH conditions, the diethanolamine/ethanolamine functional groups on triazine rings are expected to be protonated.