Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

The environmental properties of the reaction mass of phenol and 4,4’-isopropylidenediphenol was assessed by examination of the properties of the constituents and impurities of the mixture and using this information in a read across approach as described in section 13. 

 

None of the components of the substance contain hydrolysable groups. Therefore, the components of the substance are considered hydrolytically stable

 

Biodegradation is expected to be the most important process affecting fate/lifetime of the substance components in water, soil, and sediment.

 

The major constituents, phenol and 4,4’-isopropylidenediphenol (representing 60-85% of the composition), have been shown to meet criteria for classification as readily biodegradable. Biodegradation of the impurities of the substance was assessed using both QSAR estimation and experimental methods. The impurities are predicted to biodegrade slowly and at varying rates, which is consistent with 16% biodegradation observed in screening tests after 28 days. Overall, the substance (reaction mass of phenol and 4,4’-isopropylidenediphenol) would be expected to ultimately biodegrade in the environment.