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EC number: 424-250-9 | CAS number: -
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
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:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 997
- Report date:
- 1997
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 E (Ready biodegradability: Modified OECD Screening Test)
- GLP compliance:
- yes
Test material
- Reference substance name:
- Yellow MGi 1301
- IUPAC Name:
- Yellow MGi 1301
- Test material form:
- solid
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic (adaptation not specified)
- Duration of test (contact time):
- 35 d
Initial test substance concentrationopen allclose all
- Initial conc.:
- 140 mg/L
- Based on:
- DOC
- Remarks:
- nominal value
- Initial conc.:
- 27.5 mg/L
- Based on:
- DOC
- Remarks:
- measured value
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- DOC removal
Reference substance
- Reference substance:
- aniline
Results and discussion
% Degradation
- Parameter:
- % degradation (DOC removal)
- Value:
- 52
- Sampling time:
- 35 d
Any other information on results incl. tables
Expressed as percentage DOC removal, average degradation was only 8 % after 27 days, 46 and 48 % after 28 and 29 days, respectively, and 52 % after 35 days of exposure to activated sludge from a domestic waste water treatment plant.
Likewise, in the abiotic control (flask no. 6) containing the test article and sterile medium (without inoculum) practically no DOC-removal was noted during the first 27 days of exposure. Starting on exposure day-27 the DOC concentration decreased from 27.2 mg/l to 17.3 mg/l on day-35. Expressed as percentage DOC-removal, values in the range from 0 to 9 % were noted during the first 27 days of exposure, and 44, 50 and 42 % were noted after 28, 29 and 35 days of exposure, respectively without activated sludge under abiotic conditions.
These results indicate that YELLOW MGi 1301 was biotically degraded by 52 % after 35 days of exposure, and that the sudden start of biodegradation after 28 days was additionally facilitated by the spontaneous abiotic degradation of the test article under the present test conditions.
ln the procedure controls (flasks no. 3 and 4) containing the reference compound Aniline and inoculum, Aniline was readily biodegraded by an average of 92 % within 14 days of exposure, and by 96 % by exposure day-28; thus confirming suitability of the activated sludge.
ln the toxicity control containing the test article (40.5 % as DOC), the reference compound (59.5 % as DOC) and inoculum, the initial DOC concentration of 32.6 mg/l measured on day-0 decreased by 64 % within 14 days of exposure; thus, according to the test guidelines the test article can be assumed to not be inhibitory to activated sludge because degradation was > 35 % within 14 days.
Applicant's summary and conclusion
- Conclusions:
- Ready Biodegradabilty (35 d) = 52 % DOC removal
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