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EC number: 264-980-3 | CAS number: 64628-44-0
- 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 and sediment: simulation tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: sediment simulation testing
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1996-09-01 to 1997-03-01
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study
- Qualifier:
- according to guideline
- Guideline:
- other: BBA-Guidelines for Testing of Plant Protectants in the Registration Process Part IV, 5-1, Degradability and Fate of Plant Protectants in the Water/Sediment System
- Version / remarks:
- 1990
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: Commission Directive 95/36/EC, Placing Plan Protection Products on the Market; Official Journal of the European Communities
- Version / remarks:
- 14. July 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: SETAC-Europe Procedures for Assessing the Environmental Fate and Ecotoxicity of Pesticides
- Version / remarks:
- March 1995
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Radiolabelling:
- yes
- Remarks:
- Label #1: [CI-phenyl-UL-14C]Triflumuron. Label #2: [OCF3-phenyl-UL-14C]Triflumuron.
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- natural water / sediment
- Remarks:
- Two different water/sediment systems were used (Honniger pond and Von Diergardt lake).
- Details on source and properties of surface water:
- The study was carried out using two natural water-sediment systems. Honniger Pond (Honniger Weiher. Wipperfurth. Germany): Water and sediment samples were collected from an artificially dammed pond (mesotroph/oligotroph) in the course of the "Honniger Creek" forming "Honniger Pond". On account of its in- and outlet the pond (about 1,000 m in surface area) had a strong water current. Water and sediment were freshly sampled on September 24,1996. Von Diegardt Lake (Leverkusen. Germany): Water and sediment samples were collected from a lake (oligotroph) resulting from re-cultivation of a gravel pit. Water and sediment were freshly sampled on September 24, 1996. Water and sediment collected from both origins were kept under aerated conditions in the laboratories at the Institute of Metabolism Research and Residue Analysis. They were used within the next few days after sampling. Temperature, pH, oxygen content as well as redox potential of the samples at the time of collection are given in Table 1.
- Details on source and properties of sediment:
- On September 25, 1996 the collected water-sediment samples were separated in the laboratory by decanting the supernatant water each. The aqueous sediment was passed through a 0.5 cm mesh sieve and mixed. After settling the remaining water was decanted, the sediment was mixed again and the dry weight was determined. The dry matter content (mean of triplicates) of sediment Honniger was 47.8% and of the sediment Von Diergardt was 77.7 %.
- Duration of test (contact time):
- 100 d
- Initial conc.:
- 50 other: µg a.i./test vessel
- Based on:
- test mat.
- Parameter followed for biodegradation estimation:
- radiochem. meas.
- Parent/product:
- parent
- Compartment:
- total system
- Key result
- % Degr.:
- > 90
- Parameter:
- radiochem. meas.
- Sampling time:
- 100 d
- Key result
- Compartment:
- entire system
- DT50:
- < 6 d
- Temp.:
- 20 °C
- Key result
- Compartment:
- other: supernatant water
- DT50:
- 1.6 d
- Temp.:
- 20 °C
- Transformation products:
- yes
- Remarks:
- The main degradation products were identified as 2-chlorobenzoic acid and TFMU.
- No.:
- #1
- No.:
- #2
- Details on results:
- Triflumuron is quickly eliminated from the water body into the submerged sediments. The DT50 and DT90 values of Triflumuron for the supernatant water were quite short. Triflumuron is quickly eliminated from the water-sediment systems via degradation.
- Conclusions:
- According to the water/sediment study, triflumuron could be regarded as a rapidly dissipating compound from the water phase of a water/sediment system. Considering the total water/sediment system (i.e. an aquatic environment) triflumuron is quickly and thoroughly degraded as well as mineralised to CO2. Major metabolites identified in the water phase are 2-chlorobenzoic acid (M02, concentrations 44.8% and: 60.4% of the applied radioactivity in 14 days) and 4-trifluoromethoxyphenyl urea (M08, concentrations 24.6% and 47.8% of the applied radioactivity at day 14). Major metabolites identified in sediments are 2-chlorobenzoic acid (M02, concentrations less than 8%) and 4-trifluoromethoxyphenyl urea (M08, peak concentrations 20.4% and 14.1% at days 7 and 14).
- Executive summary:
This study investigated the aerobic degradation and partitioning of triflumuron (2 label sites) in two water-sediment systems over a period of 100 days. Triflumuron was quickly eliminated from the water body by translocation into the sediment or via degradation. The calculated DT50 values were <2 days in supernatent water and <6 days in the entire system. The main degradation products were identified as 2-chlorobenzoic acid and TFMU.
Reference
Table 2 - DT50 and DT90 calculations for Triflumuron in the supernatant water
Water-sediment system | 14C-label | DT50 (days) | DT90 (days) |
Honniger | Mean of #1 and #2 | 1.6 | 17.6 |
Von Diergardt | Mean of #1 and #2 | 1.6 | 17.5 |
Table 2 - DT50 and DT90 calculations for Triflumuron in the water-sediment system
Water-sediment system | 14C-label | DT50 (days) | DT90 (days) |
Honniger | #1 | 6.0 | 65.8 |
Honniger | #2 | 3.3 | 36.5 |
Von Diergardt | #1 | 4.6 | 50.4 |
Von Diergardt | #2 | 3.8 | 42.3 |
Description of key information
According to the water/sediment study, triflumuron could be regarded as a rapidly dissipating compound from the water phase of a water/sediment system. Considering the total water/sediment system (i.e. an aquatic environment) triflumuron is quickly and thoroughly degraded as well as mineralised to CO2. Major metabolites identified in the water phase are 2-chlorobenzoic acid (concentrations 44.8% and: 60.4% of the applied radioactivity in 14 days) and 4-trifluoromethoxyphenyl urea (concentrations 24.6% and 47.8% of the applied radioactivity at day 14). Major metabolites identified in sediments are 2-chlorobenzoic acid (concentrations less than 8%) and 4-trifluoromethoxyphenyl urea (peak concentrations 20.4% and 14.1% at days 7 and 14).
The half-life value of 1.6 d at 20°C in freshwater has been converted to 3.4 d at 12°C and the half-life value of 6 d at 20°C in the whole system has been converted to 12.74 d at 12°C using the Arrhenius equation.
Key value for chemical safety assessment
- Half-life in freshwater:
- 3.4 d
- at the temperature of:
- 12 °C
Whole System
- Half-life in whole system:
- 12.74 d
- at the temperature of:
- 12 °C
- Type of system:
- fresh water and sediment
Additional information
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.
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