Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
A mixture of: trisodium (2,4(or 2,6 or 4,6)-bis(3,5-dinitro-2-oxidophenylazo)-5-hydroxyphenolato)(2(or 4 or 6)-(3,5-dinitro-2-oxidophenylazo)-5-hydroxy-4(or 2 or 6)-(4-(4-nitro-2-sulfonatoanilino)phenylazo)phenolato)ferrate(1-); trisodium bis(2,4(or 2,6 or 4,6)-bis(3,5-dinitro-2-oxidophenylazo)-5-hydroxyphenolato)ferrate(1-); trisodium (2,4(or 2,6 or 4,6)-bis(3,5-dinitro-2-oxidophenylazo)-5-hydroxyphenolato)(2(or 4 or 6)-(3,5-dinitro-2-oxidophenylazo)-5-hydroxy-4(or 2 or 6)-(4-nitro-2-sulfonatophenylazo)phenolato)ferrate(1-); trisodium (2,4(or 2,6 or 4,6)-bis(3,5-dinitro-2-oxidophenylazo)-5-hydroxyphenolato)(2(or 4 or 6)-(3,5-dinitro-2-oxidophenylazo)-5-hydroxy-4(or 2 or 6)-(3-sulfonatophenylazo)phenolato)ferrate(1-); disodium 3,3'-(2,4-dihydroxy-1,3(or 1,5 or 3,5)-phenylenediazo)dibenzenesulfonate
EC number: 406-870-1 | CAS number: 115100-55-5
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
nor readly neither inherently biodegradable
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
- Type of water:
- freshwater
Additional information
READY BIODEGRADATION
The substance was tested for its ready biodegradability in the closed bottle test at nominal concentrations of 3 and 6 mg/l, following the OECD guideline no. 301D (1981).
The Chemical oxygen demand was determined to be 0.66 mg O2/mg test substance.
At the low concentration, the biodegradation reached 27 % after 28 days of incubation. At the high concentration no biodegradation was recorded after 28 days of Incubation, indicating that the test substance was toxic to bacteria at high concentrations. All the validity criteria were met. The substance is considered to be not readly biodegradable.
INHERENT BIODEGRADATION
The substance was investigated for its biodegradability in the ''28-Day Zahn-Wellens / EMPA Test" following the OECD guideline 302B (1992).
The mean concentration of DOC in the test flasks containing the test item varied from 65.8 mg/L to 68.6 mg/L over the exposure period of 28 days and remained practically unchanged in comparison to the initial mean DOC concentration of 66.1 mg/L measured on day 0 after 3 hours of exposure. Practically no DOC-removal was observed during the first three hours of exposure. The substance is not inherently biodegradable.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
