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Diss Factsheets
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EC number: 478-270-8 | 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
Short-term toxicity to aquatic invertebrates
Administrative data
- Endpoint:
- short-term toxicity to aquatic invertebrates
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2006-09-20 to 2007-06-12
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP study performed according to OECD Guideline 202, and EU Method C.2 without deviations.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 007
- Report date:
- 2007
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 202 (Daphnia sp. Acute Immobilisation Test)
- Deviations:
- no
- Remarks:
- The testing facility indicated that the protocol was followed without deviation.
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.2 (Acute Toxicity for Daphnia)
- Deviations:
- no
- Remarks:
- The testing facility indicated that the protocol was followed without deviation.
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Certificate given by the Department of Health of the Government of the United Kingdom.
Test material
Reference
- Name:
- Unnamed
- Type:
- Constituent
- Details on test material:
- - Name of test material (as cited in study report): VRT-753136 hcl
- Molecular formula: Not applicable
- Molecular weight: Not applicable
- Smiles notation: Not applicable
- InChl: Not applicable
- Structural formula attached as image file: Not applicable
- Substance type: No data
- Physical state: White powder
- Analytical purity: 100 area %
- Impurities: 0.03 area% of unknowns
- Composition of test material, percentage of components: No data
- Isomers composition: No data
- Purity test date: 2006-09-15
- Lot/batch No.: Batch number 25515/Lot No. AF6-001
- Expiration date of the lot/batch: 2008-05
- Stability under test conditions: No data
- Storage condition of test material: Room temperature
- Other: No data
- Specific details on test material used for the study:
- Details on properties of test surrogate or analogue material (migrated information):
Not applicable
Sampling and analysis
- Analytical monitoring:
- yes
- Details on sampling:
- - Concentrations: All concentrations
- Sampling method: At the start of the definitive test, four samples (10 mL) were taken from the freshly prepared control and test media. After 48 hours, the contents of the vessels from each group were pooled and four samples (20 mL) were taken for analysis.
- Sample storage conditions before analysis: On each occasion, two samples from each batch were analysed immediately; the other samples were stored frozen in case further analysis was required.
Test solutions
- Vehicle:
- no
- Details on test solutions:
- PREPARATION AND APPLICATION OF TEST SOLUTION (especially for difficult test substances)
- Method: The test substance (50 mg) was dissolved in dilution medium (500 mL) in a volumetric flask. The contents of the flask were shaken and used directly as the test medium.
- Eluate: Not applicable
- Differential loading: Not applicable
- Controls: Elendt M4 media
- Chemical name of vehicle (organic solvent, emulsifier or dispersant): Not applicable
- Concentration of vehicle in test medium (stock solution and final test solution): Not applicable
- Evidence of undissolved material (e.g. precipitate, surface film, etc.): No
Test organisms
- Test organisms (species):
- Daphnia magna
- Details on test organisms:
- TEST ORGANISM
- Common name: Water flea
- Strain: Straus
- Source: In-house culture, originally from the Institute National de Recherche Chimiqhue Applique, France
- Age at study initiation (mean and range, SD): <24 h
- Weight at study initiation (mean and range, SD): Not applicable
- Length at study initiation (length definition, mean, range and SD): Not applicable
- Valve height at study initiation, for shell deposition study (mean and range, SD): Not applicable
- Peripheral shell growth removed prior to test initiation: Not applicable
- Method of breeding: reproduce by parthenogenesis
- Feeding during test: No
ACCLIMATION
- Acclimation period: No
- Acclimation conditions (same as test or not): Not applicable
- Type and amount of food: Not applicable
- Feeding frequency: Not applicable
- Health during acclimation (any mortality observed): Not applicable
QUARANTINE (wild caught)
- Duration: Not applicable
- Health/mortality: Not applicable
Study design
- Test type:
- static
- Water media type:
- freshwater
- Limit test:
- yes
- Total exposure duration:
- 48 h
- Post exposure observation period:
- None
Test conditions
- Hardness:
- 260 mg/L
- Test temperature:
- The temperature ranged from 19.3 -19.6 deg C at time 0 and 20.7-20.8 deg C at time 48 h.
- pH:
- The pH ranged from 7.62 – 7.79 at time 0 and 7.51-7.93 at time 48 h.
- Dissolved oxygen:
- The DO ranged from 102-103% of air saturation at time 0 and 105% at time 48 h.
- Salinity:
- Not applicable
- Nominal and measured concentrations:
- Nominal- Control (100 mg/L)
Mean measured- Control (97.8 mg/L)
The measured concentration of VRT-753136 hcl in samples of test medium was corrected for the procedural recovery performed with the analysis on each occasion. They ranged between 94 and 100% of the nominal value during the test, giving an overall mean measured level of 97.8 mg/L. - Details on test conditions:
- TEST SYSTEM
- Test vessel:
- Type (delete if not applicable): closed; loosely covered
- Material, size, headspace, fill volume: glass vessels, 100 mL fill volume
- Aeration: No
- Type of flow-through (e.g. peristaltic or proportional diluter): Not applicable
- Renewal rate of test solution (frequency/flow rate): Daphnia were exposed to the test or control conditions for a period of 48 hours without renewal of test media.
- No. of organisms per vessel: 5
- No. of vessels per concentration (replicates): 4
- No. of vessels per control (replicates): 4
- No. of vessels per vehicle control (replicates): Not applicable
- Biomass loading rate: 20 mL media per organism
TEST MEDIUM / WATER PARAMETERS
- Source/preparation of dilution water: Elendt M4 test media; the medium was prepared in de-ionised water produced by reverse osmosis.
- Total organic carbon: Not applicable
- Particulate matter: Not applicable
- Metals: Not applicable
- Pesticides: Not applicable
- Chlorine: Not applicable
- Alkalinity: 43 mg/L
- Ca/Mg ratio: nominally 0.1 to 0.2 mg carbon per daphnid
- Conductivity: Not applicable
- Culture medium different from test medium: No
- Intervals of water quality measurement: Daily
OTHER TEST CONDITIONS
- Adjustment of pH: yes
- Photoperiod: A photoperiod of 16 hours light : 8 hours dark was maintained, with periods of subdued lighting at the beginning and end of each light phase.
- Light intensity: no data
EFFECT PARAMETERS MEASURED (with observation intervals if applicable): Immobility, 24 and 48 h; Daphnia were considered to be immobile if they were unable to swim within approximately 15 seconds following gentle agitation of the test vessel.
TEST CONCENTRATIONS
- Spacing factor for test concentrations: Not applicable
- Justification for using less concentrations than requested by guideline: Not applicable
- Range finding study
- Test concentrations: 1, 10, and 100 mg/L
- Results used to determine the conditions for the definitive study: Yes - Reference substance (positive control):
- no
Results and discussion
Effect concentrationsopen allclose all
- Duration:
- 48 h
- Dose descriptor:
- EC50
- Effect conc.:
- > 97.8 mg/L
- Nominal / measured:
- meas. (arithm. mean)
- Conc. based on:
- test mat.
- Basis for effect:
- mobility
- Duration:
- 48 h
- Dose descriptor:
- NOEC
- Effect conc.:
- 97.8 mg/L
- Nominal / measured:
- meas. (arithm. mean)
- Conc. based on:
- test mat.
- Basis for effect:
- mobility
- Details on results:
- - Behavioural abnormalities: No data
- Observations on body length and weight: Not applicable
- Other biological observations: Two control and four test Daphnia were observed at the surface of the medium (floating) after 24 hours of exposure; these animals were re-submerged and remained within the body of the media for the remainder of the test. After 48 hours, no immobility was observed.
- Mortality of control: One control animal appeared to be immobile after 48 hours.
- Other adverse effects control: No data
- Abnormal responses: No data
- Any observations (e.g. precipitation) that might cause a difference between measured and nominal values: No data
- Effect concentrations exceeding solubility of substance in test medium: No data - Results with reference substance (positive control):
- Not applicable
- Reported statistics and error estimates:
- The “no-observed-effect concentration” (NOEC) is derived by direct inspection of the data on the immobility of the animals. An incidence rate of more than 10% is considered to be significant.
Any other information on results incl. tables
Not applicable
Applicant's summary and conclusion
- Conclusions:
- The 48-hour EC50 of VRT-753136 hcl for the immobilisation of Daphnia magna could not be identified but must be >97.8 mg/L.
The ‘no-observed effect concentration’ of VRT-753136 hcl to Daphnia magna was 97.8 mg/L.
- Executive summary:
Not applicable
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