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EC number: 614-257-7 | CAS number: 68071-40-9
- 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
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- 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
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- Specific investigations
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- 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:
- 22 Sep - 21 Oct 2016
- 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)
- Version / remarks:
- Jul 1992
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Landesanstalt für Umwelt, Messungen und Naturschutz Baden-Würtemberg (29 Jun 2016).
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic (adaptation not specified)
- Details on inoculum:
- - Source of inoculum/activated sludge: Municipal wastewater treatment plant, Breisgauer Bucht, Forchheim, Germany
- Storage length: The sludge was sampled on 20 Sep 2016 and the test was initiated on 22 Sep 2016.
- Preparation of inoculum for exposure: The activated sludge was washed twice with tap water by settling the sludge, decanting the supernatant and re-suspending the sludge.
- Concentration of sludge: The dry solid content of the sampled activated sludge was 3.6 g/L (mean of triplicate weight measurements after 3 h drying at 105 °C).
- Initial sludge concentration: 30 mg dry solids/L - Duration of test (contact time):
- 28 d
- Initial conc.:
- 100 mg/L
- Based on:
- test mat.
- Initial conc.:
- >= 129.1 - <= 132.1 mg/L
- Based on:
- ThOD
- Parameter followed for biodegradation estimation:
- O2 consumption
- Details on study design:
- TEST CONDITIONS
- Composition of medium: Mineral medium
- Test temperature: 21.9 - 22.4 °C
- pH: 7.6 (initial pH), 7.6 (final pH on Day 28 in test vessels), and 7.5 (in blank vessels)
- pH adjusted: No
- Aeration of dilution water: The mineral medium was aerated for about 1 h before use.
- Suspended solids concentration: 30 mg dry solids/L
TEST SYSTEM
- Culturing apparatus: Oxitop-System from WTW, Weilheim consisting of narrow-necked glass bottles with rubber sleeve inserts for the CO2 trap for the absorption of the evolved CO2. Magnetic stirrers are introduced into the bottles, which are placed on a stirrer platform.
- Number of culture flasks/concentration: 3
- Method used to create aerobic conditions: Aeration of mineral medium before use.
- Measuring equipment: Oxitop measuring heads with a measuring range of 500 - 1350 hPa.
- Details of trap for CO2 and volatile organics if used: Rubber sleeve inserts with NaOH pellets.
- Other: The liquid volume was fixed to 164 mL.
CONTROL AND BLANK SYSTEM
- Inoculum blank: Three reactors containing only inoculum.
- Toxicity control: One reactor containing the test item (232.1 mg/L) and reference compound.
- Procedure control: Three reactors containing the reference compound. - Reference substance:
- acetic acid, sodium salt
- Key result
- Parameter:
- % degradation (O2 consumption)
- Value:
- 77.5
- Sampling time:
- 28 d
- Details on results:
- Degradation was > 60% on Day 10.
TOXICITY CONTROL
The test item had no toxic effect on the inoculum (42.2% degradation within 4 d) according to the validity criteria of OECD 301 (< 25% on Day 14). The pH in the vessel was 8.6. - Results with reference substance:
- The reference substance (sodium acetate) reached the pass level for ready biodegradability (≥ 60% ThOD and fulfilment of the 10-d window) within 8 d.
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- readily biodegradable
- Conclusions:
- 77.8% was degraded within the 28 days (O2-consumption). The substance is concluded to be readily biodegradable.
- Executive summary:
77.8% was degraded within the 28 days (O2-consumption). The substance is concluded to be readily biodegradable.
Reference
Description of key information
77.8% was degraded within the 28 days (O2-consumption). The substance is concluded to be readily biodegradable.
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
- Type of water:
- freshwater
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