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EC number: 421-450-8 | CAS number: 154702-15-5
- 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
- Study period:
- June 18 - August 28, 2009
- Reliability:
- 1 (reliable without restriction)
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 009
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.4-C (Determination of the "Ready" Biodegradability - Carbon Dioxide Evolution Test)
- GLP compliance:
- yes
Test material
- Reference substance name:
- -
- EC Number:
- 421-450-8
- EC Name:
- -
- Cas Number:
- 154702-15-5
- Molecular formula:
- C44H59N7O5
- IUPAC Name:
- 2-ethylhexyl 4-[(4-{[4-(tert-butylcarbamoyl)phenyl]amino}-6-[(4-{[(2-ethylhexyl)oxy]carbonyl}phenyl)amino]-1,3,5-triazin-2-yl)amino]benzoate
- Details on test material:
- - Physical state: solid
- Purity test date: 98.56%
- Lot/batch No.: 1508G21
- Expiration date of the lot/batch: 7/29/13
- Storage condition of test material: ambient, away from direct sunlight
- Other: carbon content 68.98%
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic (adaptation not specified)
- Details on inoculum:
- The facility treats predominantly residential wastes. The sludge was sieved using a 2 mm screen, adjusted to approximately 1,000 mg total suspended solids (TSS)/L with mineral media and then aerated at test temperature until use. A total suspended solids measurement and standard plate count were performed on the inoculum on the day of test chamber preparation. Plates were incubated at 20+/- 3 °C for approximately 48 hours.
- Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- 10 mg/L
- Based on:
- test mat.
- Details on study design:
- The test contained a blank control group, a reference group and a treatment group.Each group contained three replicate test chambers.The control group was used to measure the background CO2 production of the inoculum and was not dosed with a carbon source. The reference group chambers were used to check the viability of the inoculum and were dosed with sodium benzoate, a substance known to be biodegradable at a nominal conc of 10 mg C/L. The treatment group chambers were used to evaluate Uvasorb HEB at a nominal concentration of 10 mg C/L.
Reference substance
- Reference substance:
- benzoic acid, sodium salt
Results and discussion
% Degradation
- Parameter:
- % degradation (CO2 evolution)
- Value:
- 6
- Sampling time:
- 28 d
- Details on results:
- The final mean percent biodegradation for Uvasorb HEB was 6.0%. Uvasorb HEB may not be considered readily biodegradable, since the pass level of 60% TCO2 was not achieved with 10 days of reaching 10% TCO2.
Any other information on results incl. tables
Measured dissolved organic carbon (DOC) on day 29 (10 mg C/L): <1.0. pH values of the test chamber contents on day 28: 7.1.
The measured concentrations of inorganic carbon in the carbon dioxide trapping solutions are presented in Table 2 (attached below). The cumulative amounts of CO2 produced over the test period are presented in Table 3 (attached below). The cumulative percent of theoretical carbon dioxide (% TCO2) evolved is presented in Table 4 (attached below).
The control chambers evolved an average of 70.3 mg CO2 over the test period. This value has been corrected for the amount of CO2 in the trapping solution since potassium hydroxyde solution, even when freshly prepared, contains carbonates. The amount of CO2 evolved by the control chambers did not exceed the 40 mg/l (120 mg total) value considered the acceptable limit for CO2 evolution tests. The viability of the inoculum and validity of the test were supported by the results of the reference substance from which an average of 95.6% of theoretical CO2 was evolved. An average % biodegradation of greater than 60% was achieved by Day 13 thereby fulfilling the criteria for a valid test by reaching the pass lev el by Day 14.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- not inherently biodegradable
- Conclusions:
- The final mean percent biodegradation for Uvasorb HEB was 6.0%. Uvasorb HEB may not be considered readily biodegradable, since the pass level of 60% TCO2 was not achieved with 10 days of reaching 10% TCO2.
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