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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Phototransformation in air

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Administrative data

Link to relevant study record(s)

Description of key information

Key value for chemical safety assessment

Half-life in air:
2 h

Additional information

2-Vinylpyridine is not degraded directly by photolysis. However, 2VP reacts rapidly with hydroxyl radicals, nitrate radicals and ozone, to form primarily 2-pyridinecarboxyaldehyde, in a manner similar to the well-known atmospheric fate pathway of styrene to benzaldehyde. Under ambient atmospheric conditions, the calculated lifetime of 2VP due to reaction with hydroxyl radicals, nitrate radicals and ozone is approximately 3 hours, 4 hours and 1 day, respectively. The rate constant of 2VP with ozone is1.46 x 10-17cm3/molecule/s, and with OH radicals is 5.67 x 10-11cm3/molecule/s.