Registration Dossier
Registration Dossier
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EC number: 232-313-5 | CAS number: 8002-53-7 Wax obtained by extraction of lignite.
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Study acoording to OECD test guideline 301B under GLP
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 009
- Report date:
- 2009
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- Montan wax
- EC Number:
- 232-313-5
- EC Name:
- Montan wax
- Cas Number:
- 8002-53-7
- Molecular formula:
- As montan wax is a UVCB, a molecular formular cannot be specified.
- IUPAC Name:
- Montan wax
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Details on inoculum:
- - Source of inoculum/activated sludge (e.g. location, sampling depth, contamination history, procedure): activation basin of the ESN (Stadtentsorgung Neustadt) sewage treatment plant (Im Altenschemel, NW-Lachen-Speyerdorf.)
- Preparation of inoculum for exposure: The inoculum was taken from its source, washed, aerated and the dry matter was determined.
- Pretreatment: 24 hours with purified, CO2-free, moistened air
- Concentration of sludge: 25 mg/l - Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- >= 24.7 - <= 26.3 mg/L
- Based on:
- test mat.
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- CO2 evolution
Results and discussion
% Degradation
- Parameter:
- % degradation (CO2 evolution)
- Value:
- 0
- Sampling time:
- 28 d
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- under test conditions no biodegradation observed
- Conclusions:
- As no biodegradation was observed over 28 days in a study according to OECD test guideline 301B under GLP, the test substance is considered as being not readily biodegradable.
- Executive summary:
As no biodegradation was observed over 28 days in a study according to OECD test guideline 301B under GLP, the test substance is considered as being not readily biodegradable.
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