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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 204-980-2 | CAS number: 130-20-1
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- 28 March - 27 April 1978
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- documentation insufficient for assessment
- Remarks:
- No information given on negative control and validity criteria.
- Qualifier:
- according to guideline
- Guideline:
- other: Modified OECD Confirmatory Tests
- Version / remarks:
- The test was conducted according to SOP A-12 (1974-09-01).
- GLP compliance:
- no
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, industrial (adaptation not specified)
- Duration of test (contact time):
- 30 d
- Initial conc.:
- 20 mg/L
- Based on:
- TOC
- Initial conc.:
- 72.7 mg/L
- Based on:
- test mat.
- Parameter followed for biodegradation estimation:
- TOC removal
- Details on study design:
- TEST CONDITIONS
- Composition of medium: TOC content of medium: 113 mg/L
TEST SYSTEM
- Number of culture flasks/concentration: 1
CONTROL AND BLANK SYSTEM
- Inoculum blank: yes - Key result
- Parameter:
- % degradation (TOC removal)
- Value:
- 97
- St. dev.:
- 5
- Sampling time:
- 21 d
- Key result
- Parameter:
- BOD5
- Value:
- 185 mg O2/g test mat.
- Remarks on result:
- other: Test material concentration: 20 mg/L
- Parameter:
- COD
- Value:
- 696 mg O2/g test mat.
- Remarks on result:
- other: Test material concentration: 10 mg/L
- Validity criteria fulfilled:
- not specified
- Interpretation of results:
- inherently biodegradable
- Conclusions:
- The substance was found to be inherently biodegradable (97% average biodegrdation after 21 d based on TOC removal).
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- 29 January - 01 March 1974
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- documentation insufficient for assessment
- Remarks:
- No information given on negative control and validity criteria.
- Qualifier:
- according to guideline
- Guideline:
- other: Modified OECD Confirmatory Tests
- Version / remarks:
- The test was conducted according to SOP A-12 (1974-09-01).
- GLP compliance:
- no
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, industrial (adaptation not specified)
- Duration of test (contact time):
- 28 d
- Initial conc.:
- 20 mg/L
- Based on:
- TOC
- Initial conc.:
- 39 mg/L
- Based on:
- test mat.
- Parameter followed for biodegradation estimation:
- TOC removal
- Details on study design:
- TEST CONDITIONS
- Composition of medium: TOC content of medium: 110 mg/L
TEST SYSTEM
- Number of culture flasks/concentration: 1
CONTROL AND BLANK SYSTEM
- Inoculum blank: yes - Key result
- Parameter:
- % degradation (TOC removal)
- Value:
- 68.4
- Sampling time:
- 28 d
- Key result
- Parameter:
- BOD5
- Value:
- 40 mg O2/g test mat.
- Validity criteria fulfilled:
- not specified
- Interpretation of results:
- inherently biodegradable
- Conclusions:
- The substance was found to inherently biodegradable (68.4% after 28 d based on TOC removal).
Referenceopen allclose all
Description of key information
Based on a weight-of-evidence approach including two biological degradation tests and three BOD5 measurements, the test substance is considered to be inherently biodegradable in water.
Key value for chemical safety assessment
- Biodegradation in water:
- inherently biodegradable
Additional information
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.
