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EC number: 701-059-1 | CAS number: 345217-03-0
- 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
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:
- 05 September 2012 to 07 September 2012
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: This study has been performed according to OECD and/or EC guidelines and according to GLP principles
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 012
- Report date:
- 2012
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 202 (Daphnia sp. Acute Immobilisation Test)
- Version / remarks:
- 2004
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.2 (Acute Toxicity for Daphnia)
- Version / remarks:
- 2008
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- ISO 6341 (Water quality - Determination of the Inhibition of the Mobility of Daphnia magna Straus (Cladocera, Crustacea))
- Version / remarks:
- 1996
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: Guidance document onGuidance document on aquatic toxicity testing of difficult substances and mixtures, OECD series on testing and assessment number 23, December 14, 2000.
- Deviations:
- no
- GLP compliance:
- yes
Test material
- Reference substance name:
- PAZ-D
- IUPAC Name:
- PAZ-D
- Test material form:
- solid: particulate/powder
- Remarks:
- migrated information: powder
- Details on test material:
- - Name of test material (as cited in study report): PAZ-D
- Molecular formula: C43H50O4N8F2
- Molecular weight: 780.9
- Physical state: white powder
- Expiration date of the lot/batch: 13 January 2013 (allocated by NOTOX, 1 year after receipt of the test substance)
- Stability under test conditions: stable
- Storage condition of test material: At room temperature in the dark
Constituent 1
- Specific details on test material used for the study:
- Details on properties of test surrogate or analogue material (migrated information):
PHYSICO-CHEMICAL PROPERTIES
- Water solubility: 0.0453 mg/L
- Stability in water: No
Sampling and analysis
- Analytical monitoring:
- yes
- Details on sampling:
- At the start of the test duplicate samples for possible analysis were taken from all test concentrations and the control. At the end of the test duplicate samples were taken from the control and the two highest concentrations. Sampling was performed according to the schedule below.
Frequency: at t=0 h and t=48 h
Volume: 0.4 ml from the approximate centre of the test vessels
Storage: Not applicable, samples were analysed on the day of sampling.
At the end of the exposure period, the replicates were pooled at each concentration before sampling.
Test solutions
- Vehicle:
- no
- Details on test solutions:
- The batch of PAZ-D tested was a white powder with a purity of 99.3% and not completely soluble in test medium at the loading rate initially prepared.
Preparation started with a loading rate of 100 mg/L. An overnight period of magnetic stirring was applied. Thereafter, the obtained mixture was filtered through a 0.45 µm membrane filter (rs 55, Whatman) and used as the highest test concentration. The lower test concentrations were prepared by subsequent dilutions of the filtrate in test medium. The final test solutions were all clear and colourless.
Test organisms
- Test organisms (species):
- Daphnia magna
- Details on test organisms:
- Species: Daphnia magna (Crustacea, Cladocera) (Straus, 1820), at least third generation, obtained by acyclical parthenogenesis under specified breeding conditions.
Source: In-house laboratory culture with a known history.
Reason for selection: This system has been selected as an internationally accepted invertebrate species.
Validity of batch: Daphnids originated from a healthy stock, 2nd to 5th brood, showing no signs of stress such as mortality >20%, presence of males, ephippia or discoloured animals and there was no delay in the production of the first brood.
Characteristics: For the test selection of young daphnids with an age of < 24 hours, from parental daphnids of more than two weeks old.
Study design
- Test type:
- static
- Water media type:
- freshwater
- Limit test:
- yes
- Total exposure duration:
- 48 h
- Remarks on exposure duration:
- none
- Post exposure observation period:
- no
Test conditions
- Hardness:
- 180 mg/L expressed as CaCO3
- Test temperature:
- 19.0 - 20.0°C
- pH:
- 7.7 - 8.1
- Dissolved oxygen:
- 9.1 - 9.2
- Salinity:
- -
- Nominal and measured concentrations:
- Nominal: 100% of the filtrate prepared at 100 mg/L
Average exposure concentration: 1.1 ug/l
Due to possible adsorption to glassware the obtained analytical results should be considered as estimated values. - Details on test conditions:
- Test duration: 48 hours
Test type: Static
Test vessels: 100 mL, all-glass
Medium: Adjusted ISO medium
Number of daphnids : 20 each for the control and the highest concentration (limit test), 10 each for lower concentrations (combined range-finding test)
Loading: 5 per vessel containing 80 ml of test solution
Light: 16 hours photoperiod daily
Feeding: No feeding
Aeration: No aeration of the test solutions.
Introduction of daphnids: Within 21 minutes after preparation of the test solutions. - Reference substance (positive control):
- yes
- Remarks:
- potassium dichromate (K2Cr2O7)
Results and discussion
Effect concentrationsopen allclose all
- Duration:
- 48 h
- Dose descriptor:
- EC50
- Remarks:
- .
- Effect conc.:
- > 1.1 µg/L
- Nominal / measured:
- meas. (geom. mean)
- Conc. based on:
- test mat.
- Remarks:
- .
- Basis for effect:
- mobility
- Remarks:
- .
- Remarks on result:
- other: -
- Duration:
- 48 h
- Dose descriptor:
- NOEC
- Remarks:
- .
- Effect conc.:
- 1.1 µg/L
- Nominal / measured:
- meas. (geom. mean)
- Conc. based on:
- test mat.
- Remarks:
- .
- Basis for effect:
- mobility
- Remarks:
- .
- Remarks on result:
- other: -
- Details on results:
- - Behavioural abnormalities: no
- Other biological observations: no
- Immobility in control: 0%
- Immobility in the limit concentration: 5%
- Other adverse effects control: no
- Abnormal responses: no
- Any observations (e.g. precipitation) that might cause a difference between measured and nominal values: no - Results with reference substance (positive control):
- The actual responses in this reference test with K2Cr2O7 were in the lower range of the expected historical responses at the different concentrations, i.e. a 48h-EC50 between 0.3 and 1.0 mg/l. Hence, the sensitivity of this batch of D. magna was in agreement with the historical data collected at NOTOX.
The 24h-EC50 was 0.50 mg/l with a 95% confidence interval between 0.44 and 0.57 mg/l.
The 48h-EC50 was 0.30 mg/l with a 95% confidence interval between 0.28 and 0.35 mg/l. - Reported statistics and error estimates:
- Calculation of EC50:
No EC50 could be calculated because the test substance proved to be non-toxic (EC50 > maximum concentration tested).
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Conclusions:
- Under the conditions of the present study PAZ-D did not induce acute immobilisation of Daphnia magna at 1.1 µg/L after 48 hours of exposure (NOEC).
The 48h-EC50 was beyond the range tested, i.e. exceeded an average exposure concentration of 1.1 µg/L.
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