Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

The test material attained 45% degradation after 28 days, calculated from the oxygen consumption values, and therefore cannot be considered to be readily biodegradable under the strict terms and conditions of OECD Guideline No 301 F. The toxicity control attained 42% degradation after 14 days and 51% degradation after 28 days thereby confirming that the test material was not toxic to the sewage treatment micro-organisms used in the study. Aniline attained 61% degradation after 14 days and 72% degradation after 28 days thereby confirming the suitability of the inoculum and test conditions.
YBY-ARJ-043\\U136 was not readily biodegradable within a 28-day test period when exposed to microorganisms maintained in an aerobic, aqueous mineralized environment (OECD 301B). The mean cumulative biodegradation of the test substance was 70.7% after 41 days.
Cumulative biodegradation of the reference substance was 65.3% by Day 12 meeting the test criteria for acceptability.
YBY-ASJ-043//U136 was not readily biodegradable in this OECD 301 F test. The mean cumulative biodegradation was 62% and 70% using silica gel as carrier after 28 days indicating that this material will not persist in the environment.

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable but failing 10-day window

Additional information