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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Benzidine-2,2’-disulphonic acid is estimated to be not persistent in air medium as the half life period of Benzidine-2,2’-disulphonic acid in air is 0.5 days.

Key value for chemical safety assessment

Half-life in air:
0.5 d

Additional information

The atmospheric oxidation half-life ofBenzidine-2,2-disulphonic acidwas estimated using the level III multimedia model. It was estimated that the substance was not persistent in air medium as the half life period ofBenzidine-2,2’-disulphonic acidin air is 0.5 days. This indicates thatBenzidine-2,2-disulphonic acidis easily phototransformed in air.

Medium

Half life in Days

Percent in medium

Air

0.5

0%