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Diss Factsheets
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EC number: 807-421-6 | CAS number: 260359-57-7
- 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
Toxicity to aquatic algae and cyanobacteria
Administrative data
- Endpoint:
- toxicity to aquatic algae and cyanobacteria
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 006
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 201 (Alga, Growth Inhibition Test)
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.3 (Algal Inhibition test)
- GLP compliance:
- yes
Test material
Reference
- Name:
- Unnamed
- Test material form:
- liquid
- Specific details on test material used for the study:
- SOURCE OF TEST MATERIAL
- Purity : 96.70%
Sampling and analysis
- Analytical monitoring:
- yes
Test organisms
- Test organisms (species):
- Pseudokirchneriella subcapitata (previous names: Raphidocelis subcapitata, Selenastrum capricornutum)
- Details on test organisms:
- ACCLIMATION
- Acclimation period:12 days
- Acclimation conditions: same as test
Study design
- Water media type:
- freshwater
- Limit test:
- no
- Total exposure duration:
- 72 h
- Post exposure observation period:
- Algal cell density was measured every 24 h by microscope direct count in all the best concentration and in the control.
Test conditions
- Test temperature:
- in the range 23 °C /- 2°C
- pH:
- 8.70-8.80
- Nominal and measured concentrations:
- Nominal concentration in a geometric series, namely 0.5, 0.9, 1.6, 2.8 and 5.0 mg/l.
- Details on test conditions:
- Three replicates for each concentration and six for control were prepared.
- Reference substance (positive control):
- no
Results and discussion
Effect concentrationsopen allclose all
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- 0.6 mg/L
- Nominal / measured:
- meas. (geom. mean)
- Conc. based on:
- test mat.
- Basis for effect:
- biomass
- Key result
- Duration:
- 72 h
- Dose descriptor:
- EC50
- Effect conc.:
- 2.9 mg/L
- Nominal / measured:
- meas. (geom. mean)
- Conc. based on:
- test mat.
- Basis for effect:
- growth rate
- Key result
- Duration:
- 72 h
- Dose descriptor:
- NOEC
- Effect conc.:
- 0.2 mg/L
- Nominal / measured:
- meas. (geom. mean)
- Conc. based on:
- test mat.
- Duration:
- 72 h
- Dose descriptor:
- LOEC
- Effect conc.:
- 0.4 mg/L
- Nominal / measured:
- meas. (geom. mean)
- Conc. based on:
- test mat.
- Details on results:
- The test item concentration was not stable during the test, the measured concentrations ranging from 34% to 92% of the nominal value already short after being prepared (time 0 h), while further decrease occurrred during the following day (to 29-43 % of the nominal after 72 h). Therefore the biological results are not referred to the nominal concentration but to the geometric mean of the measured concentration.
Any other information on results incl. tables
In the test medium concentration the algal biomass and the growth rate after 72 hours of exposure were inhibited respectively by 17% and 3% for lowest concentration to a maximum of 86% and 44% for the highest concentration, compared with control flash.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Conclusions:
- For the test item d-trans Allethrin 75/25 the NOEC and LOEC values after 72 hours are the same for both endpoint, growth rate and biomass growth, respectively 0.20 and 0.41 mg/l.
EC50 growth rate: 2.87 mg/l (95% 2.31-3.50)
EC50 biomass: 0.57 mg/l (95% 0.15-0.97)
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