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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Biodegradation in water: screening tests

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Administrative data

Link to relevant study record(s)

Description of key information

Expected as neither readily nor inherently biodegradable

Key value for chemical safety assessment

Type of water:

Additional information

The substance is a cationic azo dye. Basic Orange 064 is not expected to be ready biodegradable because of its chemical structure and the specific function. Commonly, dyes undergo a primary transformation, i.e. discolouration due to interrupting the conjugation. Nevertheless, the degradation process involves more steps and take more time.

There are no experimental information on Basic Orange 064, thus the substance biodegradability potential has been evaluated using an estimation tool. The QSAR based screening criterion for identifying substances for persistency (P and vP) confirmed that the substance is expected to be persistent.