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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Environmental fate & pathways

Phototransformation in air

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Description of key information

Nojima & Yamaashi (2004) studied the photodegradation of sulfur dioxide in the presence of other air pollutants. While no degradation was observed when only SO2 was present in the reaction chamber, oxidation was largely accelerated after addition of nitrogen oxide, biacetyl or benzaldehyde. Reaction rates for environmental conditions were not estimated.

Key value for chemical safety assessment

Additional information