Registration Dossier
Registration Dossier
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: 201-126-0 | CAS number: 78-59-1
Biodegradation in water and sediment: simulation tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: sewage treatment simulation testing
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Comparable to guideline study with acceptable restrictions
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 303 A (Simulation Test - Aerobic Sewage Treatment. A: Activated Sludge Units)
- GLP compliance:
- no
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Details on inoculum:
- INOCULUM/TEST ORGANISM
- Source: municipal WWTP Marl-West, sampled 17 Feb 1984
- Pretreatment: fed into test apparatus ca. 40 min after sampling - Duration of test (contact time):
- 3 h
- Initial conc.:
- 10.4 mg/L
- Based on:
- DOC
- Parameter followed for biodegradation estimation:
- DOC removal
- Details on study design:
- TEST SYSTEM
- Culturing apparatus: flow-through
- Number of culture flasks per concentration: 1
- Aeration device: pump
- Closed vessels used: no
TEST DURATION
- 34 days - % Degr.:
- 68.9
- St. dev.:
- 10.9
- Parameter:
- DOC removal
- Sampling time:
- 34 d
- Transformation products:
- no
- Endpoint:
- biodegradation in water: simulation testing on ultimate degradation in surface water
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- the study does not need to be conducted because the substance is readily biodegradable
- Endpoint:
- biodegradation in water: sediment simulation testing
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- the study does not need to be conducted because the substance is readily biodegradable
Referenceopen allclose all
The mean of 24 measurements at approximately regular intervals is 68.86 +/- 10.90 % degradation.
Description of key information
A simulation study in water or sediment does not need to be conducted because the substance is readily biodegradable.
Key value for chemical safety assessment
Additional information
The mean of 24 measurements at approximately regular intervals is 68.86 +/- 10.90 % degradation in an OECD 303A study (Hüls, 1997).
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.
