Registration Dossier
Registration Dossier
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EC number: 695-988-9 | CAS number: 100556-82-9
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
Not readily or inherently biodegradable in screening tests.
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
Additional information
Screening tests for biodegradation of Reactive Black 5 in water showed that the test substance is not readily or inherently biodegradable. However, Reactive Black 5 is rapidly removed from the dye-bath as shown by decolourisation of the test medium. In a study conducted according to OECD guideline 302B 60 % colour elimination was noted after 28 days. In a similar screening test at the end of 22 days 81 % decolourisation of the test item was observed.
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