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EC number: 262-114-9 | CAS number: 60239-68-1
- 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
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- From March 03, 2011 to March 09, 2011
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.4-D (Determination of the "Ready" Biodegradability - Manometric Respirometry Test)
- Deviations:
- no
- GLP compliance:
- yes
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, non-adapted
- Details on inoculum:
- - Fresh sample of activated sludge from the aeration basin of a municipal sewage treatment plant (Moers, Germany)
- Filtered sample of 1875 mg suspended solids
- Following washing and dilutions in a mineral medium, the amount of inoculum corresponded to 30 mg/L suspended solids. - Duration of test (contact time):
- ca. 28 d
- Initial conc.:
- 100 mg/L
- Based on:
- COD
- Parameter followed for biodegradation estimation:
- O2 consumption
- Remarks:
- percentage oxygen uptake of the COD
- Details on study design:
- The experiment was carried out in an closed incubation device, the Sensomat system at ca. 22°C. Biotic and abiotic (control) degradation was measured.
- Reference substance:
- benzoic acid, sodium salt
- Remarks:
- at 100 mg/L
- Test performance:
- Measurement of the percentage of COD/ThOD NH4 (ThOD NH4 = theoretical oxygen demand assuming no nitrification occurs)
- Key result
- Parameter:
- other: % of COD/ThOD NH4
- Value:
- ca. 97
- Sampling time:
- 28 d
- Remarks on result:
- other: readily biodegradable
- Details on results:
- - The average biodegradation value of the test substance was 97% after 28 days. 83 % biodegradation accured within a 10-d window during the 28-d test period.
- The average degradation value of the abiotic control was -1% after 28 days at a concentration of 100 mg test substance/L.
- The test substance is not assumed to be inhibitory, because 84% degradation degradation occured with 14 days in the toxicity control preparations containing 100 mg test substance and mg sodium benzoate per litre.
- Inoculum blanks reached a mean oxygen consumption of 19.7 mg/L with 28 days. Unusual observations were not made. - Results with reference substance:
- Sodium benzoate was biodegradated to an average of 90% within 14 days.
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- readily biodegradable
- Conclusions:
- Under the study conditions, the test substance was considered to be readily biodegradable.
- Executive summary:
A study was conducted to determine the ready biodegradability of the test substance, C11-unsatd. DEA (>75% active), according to OECD Guideline 301F and EU Method C.4 D (manometric respirometry test), in compliance with GLP. Activated sludge (amount of inoculum: 30 mg/L suspended solids) was exposed for 28 d to the test substance at a concentration of 100 mg/L (based on COD). The experiment was carried out in a closed incubation device, the Sensomat system at ca. 22°C. Biotic and abiotic (control) degradation was measured. More especially, the biodegradation was assessed by the measurement of the percentage of COD/ThOD NH4, assuming no nitrification occurs. A negative (blank) and a positive (sodium benzoate) control were included in the experiment. The average biodegradation value of the test substance was 97% after 28 d. 83% biodegradation occurred within a 10 d window during the test period. The average degradation value of the abiotic control was -1% after 28 d at a concentration of 100 mg test substance/L. The test substance was not assumed to be inhibitory, because 84% degradation occurred with 14 d in the toxicity control preparations containing 100 mg test substance and mg sodium benzoate per litre. Finally, inoculum blanks reached a mean oxygen consumption of 19.7 mg/L with 28 d and unusual observations were not made. Sodium benzoate was biodegraded to an average of 90% within 14 d. The experiment fulfilled the validity criteria. Under the study conditions, the test substance was considered to be readily biodegradable (Mey, 2011).
Reference
None.
Description of key information
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
- Type of water:
- freshwater
Additional information
A study was conducted to determine the ready biodegradability of the test substance, C11-unsatd. DEA (>75% active), according to OECD Guideline 301F and EU Method C.4 D (manometric respirometry test), in compliance with GLP. Activated sludge (amount of inoculum: 30 mg/L suspended solids) was exposed for 28 d to the test substance at a concentration of 100 mg/L (based on COD). The experiment was carried out in a closed incubation device, the Sensomat system at ca. 22°C. Biotic and abiotic (control) degradation was measured. More especially, the biodegradation was assessed by the measurement of the percentage of COD/ThOD NH4, assuming no nitrification occurs. A negative (blank) and a positive (sodium benzoate) control were included in the experiment. The average biodegradation value of the test substance was 97% after 28 d. 83% biodegradation occurred within a 10 d window during the test period. The average degradation value of the abiotic control was -1% after 28 d at a concentration of 100 mg test substance/L. The test substance was not assumed to be inhibitory, because 84% degradation occurred with 14 d in the toxicity control preparations containing 100 mg test substance and mg sodium benzoate per litre. Finally, inoculum blanks reached a mean oxygen consumption of 19.7 mg/L with 28 d and unusual observations were not made. Sodium benzoate was biodegraded to an average of 90% within 14 d. The experiment fulfilled the validity criteria. Under the study conditions, the test substance was considered to be readily biodegradable (Mey, 2011).
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