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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Stability (Phototransformation in air):

After exposure to air, Bisphenol A will be rapidly degraded by photochemical processes. The rate constant for indirect photolysis in air (OH-mediated photodegradation) is 80.6E-12 cm3 / (molecule*sec) and half-life is 0.13 days, assuming 12 hours daylight and a hydroxyl radical concentration of 1.5E6 molecules per cm3.

Stability (Hydrolysis):

Based on the molecular structure of Bisphenol A, hydrolysis is not expected under environmentally relevant conditions.

Stability (Phototransformation in water):

Bisphenol A has a half-life of 0.5 to 10 days for direct photolysis and 0.7 to 1.3 days for indirect photolysis.

Biodegradation (in water, screening tests):

Bisphenol A is readily biodegradable.

Biodegradation (in water and soil, simulation tests):

Bisphenol A was found to be rapidly biodegraded by microbial consortia found in many natural waters and sediments, with lag times and half-lives on the order of a few days.

Biodegradation (in soil):

Bisphenol A dissipates in soil in less than 3 days, with a major route being conversion to non-extractable bound residues.


Bisphenol A has low potential for bioaccumulation based on laboratory bioconcentration factors of less than or equal to 73 L/kg in fish.

Transport and distribution (Adsorption/desorption):

The soil sorption organic carbon normalised partition coefficient values (Koc) of Bisphenol A range from 251 to 1507 L/kg, averaging 750 +/- 348 L/kg.

Transport and distribution (Henry´s Law constant):

At ambient temperature and atmospheric pressure, Bisphenol A is not volatile, with a Henry's law constant calculated to be 3.12E-7 Pa*m3/mol from aqueous solubility and vapour pressure.

Transport and distribution (Distribution modelling):

Level III Mackay-type modelling shows that nearly all Bisphenol A goes into the water and soil compartments. The exact proportion in each depends on where emissions enter the environment.

Environmental Monitoring:

Concentrations of Bisphenol A have been taken from reports and publications from 1996 to 2015 containing "reliable" or "very reliable" surface and/or sediment data from the European Union. The data were subjected to statistical analysis using the Kaplan-Meier method because the dataset contained numerous non-detected values.