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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Data on the stability of pyridine in the environment are limited. Hydrolysis of the pyridines is not expected to be an important mechanism of abiotic degradation due to the lack of hydrolysable functional groups.  Photolysis of a structural analogue, 4-methylpyridine, by vacuum ultraviolet radiation in the 100 nm to 300 nm band has been shown, although absorption of environmental UV radiation at wavelengths greater than 290 nm is not expected to be substantial. Since pyridine has been shown to be readily biodegradable, biodegradation is expected to be a more important environmental fate process than abiotic degradation.