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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
EC number: 641-487-5 | CAS number: 40150-92-3
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- From May 2021 to August 2021
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 021
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)
- Version / remarks:
- 1992
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- 1-(1-ethoxyethyl)-4-(2-methylpropyl)benzene
- Cas Number:
- 262273-18-7
- Molecular formula:
- C14 H22 O
- IUPAC Name:
- 1-(1-ethoxyethyl)-4-(2-methylpropyl)benzene
- Test material form:
- liquid
- Details on test material:
- - Batch No.: V4 Fr. 4-17 u. V5, Fr. 4-14
- Chemical Name: 1-(1-ethoxyethyl)-4-(2-methylpropyl)benzene
- Purity: 94.2 %
- Color: Colorless
- Sum Formula: C13H20O
- Molecular Weight: 192.3 g/mol
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Details on inoculum:
- The aerobic activated sludge used for this study was deposited for 10 min, washed by centrifugation and the supernatant liquid phase was decanted. The solid material was re-suspended in test water and centrifuged again. This procedure was done three times. An aliquot of the final sludge suspension was weighed, dried and the ratio of wet sludge to its dry weight was determined. Based on this ratio, calculated aliquots of washed sludge suspension, corresponding to 3.5 g dry material per litre were mixed with test water and aerated overnight. This suspension was used for the experiment.
- Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- 41.2 mg/L
- Based on:
- test mat.
Reference substance
- Reference substance:
- benzoic acid, sodium salt
Results and discussion
% Degradation
- Parameter:
- % degradation (O2 consumption)
- Remarks:
- BOD/ ThOD
- Value:
- 0
- Sampling time:
- 28 d
BOD5 / COD results
- Results with reference substance:
- 84 % after 14 d and 92 % after 28 d
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- not readily 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.
