Registration Dossier
Registration Dossier
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EC number: 940-308-0 | CAS number: -
Biodegradation in water and sediment: simulation tests
Administrative data
- Endpoint:
- biodegradation in water: simulation testing on ultimate degradation in surface water
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- June 10- 12, 2009
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 010
- Report date:
- 2010
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 306 (Biodegradability in Seawater)
- GLP compliance:
- yes
Test material
- Reference substance name:
- Fatty acids C10-20, reaction product with diethylenetriamine
- EC Number:
- 940-308-0
- IUPAC Name:
- Fatty acids C10-20, reaction product with diethylenetriamine
- Test material form:
- liquid: viscous
- Details on test material:
- Test substance: Fatty acids, C10-20 neo, reaction product with diethylenetriamine
Old name of the test substance: MK195K
Stability: No particular stability concerns
Solubility: Insoluble
Odor: Aromatic
Storage: room temperature
Constituent 1
- Specific details on test material used for the study:
- Old name of the test substance: Naphthenic acids, reaction products with diethylenetriamine.
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- other: seawater
- Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- 2 mg/L
- Based on:
- test mat.
Results and discussion
% Degradation
- Key result
- % Degr.:
- 15
- Parameter:
- CO2 evolution
- Sampling time:
- 28 d
- Transformation products:
- not specified
Any other information on results incl. tables
The COD for test item was determined to be 2.03 mg O2 per mg substance.
The maximum percent biodegradation for the test substance of 15% was observed on day 28.
The sodium acetate 2mg/L reference control achieved greater than 60% biodegradation within the 28 day test period.
Dissolved oxygen depletion in the seawater controls remained within the test guideline of 30%; on day 28 a maximum dissolved oxygen depletion of 5.6% occurred. Control oxygen level had decreased from 7.2 mg/L on day 0 to 6.8 mg/L on day 28.
Applicant's summary and conclusion
Validity criteria
- Validity criteria fulfilled:
- yes
- Conclusions:
- The maximum biodegradation percent for Fatty acids, C10-20 neo, reaction product with diethylenetriamine of 15% was observed on day 28.
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