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Diss Factsheets
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EC number: 931-335-9 | CAS number: 90622-74-5
- 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
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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:
- September 14 1995 to January 23 1996
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 D (Ready Biodegradability: Closed Bottle Test)
- GLP compliance:
- yes (incl. QA statement)
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, non-adapted
- Details on inoculum:
- - Source of inoculum: Sewage treatment plant, Hochdahl
- Concentration of sludge: 1 mL/L - Duration of test (contact time):
- ca. 28 d
- Initial conc.:
- 2 mg/L
- Based on:
- act. ingr.
- Initial conc.:
- 5 mg/L
- Based on:
- act. ingr.
- Parameter followed for biodegradation estimation:
- O2 consumption
- Details on study design:
- Inoculum and test material in a mineral culture medium were placed in closed flasks and kept at a constant tempetarture of 20 +/- 1°C either in the dark or under diffuse light. O2 consumption was measured iodometrically.
Biodegradability was estimated by comparing actual and the theoretical O2 consumption.
Negative (no test substance) and positive (sodium benzoate) controls were run in parallel. - Reference substance:
- benzoic acid, sodium salt
- Key result
- Parameter:
- % degradation (O2 consumption)
- Value:
- ca. 84
- Sampling time:
- 28 d
- Remarks on result:
- other: at 2 mg/L of test substance.
- Key result
- Parameter:
- % degradation (O2 consumption)
- Value:
- ca. 71
- Sampling time:
- 28 d
- Remarks on result:
- other: at 5 mg/L test substance. Insufficient O2 left in the flask.
- Details on results:
- Plateau for ready biodegradability of the test substance reached within 14 d of time point when 10% degradation occured. The 14 d window was therefore respected.
- Results with reference substance:
- The degradation of sodium benzoate was equivalent to 89% within 28 d. 73% degradation was reached within 7 d
- 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 performed to assess the ready biodegradability of the test substance, C12-18 and C18-unsatd. DEA, according to OECD Guideline 301D (Closed bottle test), in compliance with GLP. The test substance at 2 and 5 mg/L was incubated with sludge from a domestic wastewater treatment plant and O2 consumption was followed over a period of 28 d. A total of 84% O2 consumption was obtained at 2 mg/L and the plateau for ready biodegradability was reached within 14 d, at which point there was 10% degradation. At 5 mg/mL, 71% O2 consumption was obtained, although there was insufficient O2 left in the flask at the end of the test. Under the study conditions, the test substance was considered to be readily biodegradable (Werner, 1996).
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 performed to assess the ready biodegradability of the test substance, C12-18 and C18-unsatd. DEA, according to OECD Guideline 301D (Closed bottle test), in compliance with GLP. The test substance at 2 and 5 mg/L was incubated with sludge from a domestic wastewater treatment plant and O2 consumption was followed over a period of 28 d. A total of 84% O2 consumption was obtained at 2 mg/L and the plateau for ready biodegradability was reached within 14 d, at which point there was 10% degradation. At 5 mg/mL, 71% O2 consumption was obtained, although there was insufficient O2 left in the flask at the end of the test. Under the study conditions, the test substance was considered to be readily biodegradable (Werner, 1996).
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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