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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Endpoint:
biodegradation in water: ready biodegradability
Type of information:
other: expert judgement
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: expert judgement

Data source

Reference
Reference Type:
other: expert judgement
Title:
Unnamed
Year:
2018

Materials and methods

Test guideline
Qualifier:
no guideline required
Principles of method if other than guideline:
Expert judgement with EPIWEB estimation and available data

Test material

Constituent 1
Chemical structure
Reference substance name:
Disodium 2-[4-[[1-[[(2-methoxy-5-methyl-4-sulphonatophenyl)amino]carbonyl]-2-oxopropyl]azo]phenyl]-6-methylbenzothiazole-7-sulphonate
EC Number:
276-771-4
EC Name:
Disodium 2-[4-[[1-[[(2-methoxy-5-methyl-4-sulphonatophenyl)amino]carbonyl]-2-oxopropyl]azo]phenyl]-6-methylbenzothiazole-7-sulphonate
Cas Number:
72705-26-1
Molecular formula:
C26H24N4O9S3.2Na
IUPAC Name:
disodium 2-[4-[[1-[[(2-methoxy-5-methyl-4-sulphonatophenyl)amino]carbonyl]-2-oxopropyl]azo]phenyl]-6-methylbenzothiazole-7-sulphonate

Study design

Inoculum or test system:
other: -

Results and discussion

% Degradation
Remarks on result:
not readily biodegradable based on QSAR/QSPR prediction

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Interpretation of results:
not readily biodegradable
Conclusions:
Bases on estimation and available data on similar substance, Direct Yellow 157 coudl be considered as not ready biodegradable.