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EC number: - | 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
Link to relevant study record(s)
Description of key information
Not readily biodegradable
Key value for chemical safety assessment
Additional information
The ready biodegradability of the test item was assessed by its single components.
C1 was tested in a 28-day biodegradation test following the “Manometric Respirometry” method according to the OECD guideline 301F. For this purpose, the test item was added to activated sludge collected from the aeration tank of a civil wastewater treatment plant and let to stay in contact with the sludge for 28 days under continuous stirring. The tested concentration was 100 mg/L as test item. The biodegradation was followed by measuring the BOD (Biochemical Oxygen Demand) of the test item under defined conditions by means of a manometric method. The test item is considered to be stable at the test conditions for a time corresponding to the exposure time (28 days). Therefore, all reported results are related to the nominal concentration of the test item. The ThOD NH3 values were calculated to be equal to 1.67 mg O2/mg for reference item and 0.79 mg O2/mg for test item. According to OECD guideline no. 301, the oxygen consumption due to nitrification was not considered since the test substance does not contain N. The test complies with the validity criteria since the mean oxygen uptake in the inoculum control at the end of test period was 40 mg O2/L and there was not difference between duplicate values of test item degradation at the end of the test period. Moreover, the reference item reached the biodegradation pass level (60%) on the sixth day (65.3%). The test item 3,4-dichlorobenzotrichloride was found to be not readily biodegradable under the conditions applied in a Manometric Respirometry test, having not showed biodegradation during the test period. Even so, the test item did not show any inhibitory effects on the microorganism activity at the tested concentration as demonstrated by the 25% of biodegradation exceeded in the toxicity control already at third day of test period (41.9%).
The ready biodegradability of C2 was also assessed in a 28-day biodegradation test according to the OECD guideline 301F. For this purpose, the test item was added to activated sludge collected from the aeration tank of a civil wastewater treatment plant and let to stay in contact with the sludge for 28 days under continuous stirring. The tested concentration was 100 mg/L as test item. The biodegradation was followedby measuring the BOD (Biochemical Oxygen Demand) of the test item under defined conditions by means of a manometric method. The test item is considered to be stable at the test conditions for a time corresponding to the exposure time (28 days). Therefore, all reported results are related to the nominal concentration of the test item. The ThODNH3values were calculated to be equal to 1.67 mg O2/mg for reference item and 0.64 mg O2/mg for test item. According to OECD guideline no. 301, the oxygen consumption due to nitrification was not considered since the test substance does not contain N. The test complies with the validity criteria since the mean oxygen uptake in the inoculum control at the end of test period was 40 mg O2/L and there was not difference between duplicate values of test item degradation at the end of the test period. Moreover, the reference item reached the biodegradation pass level (60%) on the sixth day (65.4%). The test item 3,4,5-trichloro-benzotrichloride was found to be not ready biodegradable under the conditions applied in a Manometric Respirometry test, having showed a maximum biodegradation of 9.4% during the test period (mean value between two replicates). Even so, the test item did not show any inhibitory effects on the microorganism activity at the tested concentration as demonstrated by the 25% of biodegradation exceeded in the toxicity control already at third day of test period (25.2%).
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