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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

If released into the environment, 4,4 -sulphonyldiphenol is not expected to significantly adsorb unto soils and sediments based on its low Koc value.

4,4 -sulphonyldiphenol can be readily photodegraded in aqueous solutions under UV light. The process depends primarily on the direct photolysis as a consequence of its absorption of light. The major transformation product was identified to be p-hydroxybenzenesulfonic acid.

From the water surface 4,4-sulphonyldiphenol will slowly evaporate into the atmosphere. In air, the substance is decomposed relatively fast by indirect photolysis (reaction with hydroxyl radicals). The substance is considered as hydrolytically stable and not readily biodegradable.

Although 4,4'-sulphonydiphenol is assessed as not readily biodegradable, there is evidence that the substance can be degraded by microbial populations after adaptation. This is confirmed by studies dimostrating high removal of 4,4'-sulphonydiphenol from wastewater treatment plants

The potential of 4,4 -sulphonyldiphenol for bioaccumulation in aquatic/sediment and terrestrial organisms is negligible.