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EC number: 237-029-5 | CAS number: 13590-82-4
- 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
Link to relevant study record(s)
- Endpoint:
- short-term toxicity to aquatic invertebrates
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 13.09.2017 to 15.09.2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 202 (Daphnia sp. Acute Immobilisation Test)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Analytical monitoring:
- yes
- Details on sampling:
- The following nominal concentrations were tested: 6.25, 12.5, 25, 50 and 100 % v/v saturated solution. The corresponding calculated geometric mean concentrations were: NA, 0.20, 0.28, 0.77 and 1.83 mg/L. The immobility or mortality of the Daphnia was determined by visual observation after 24 and 48 hours of exposure. Those animals not able to swim within 15 seconds after gentle agitation of the test beaker were considered to be immobile.
- Vehicle:
- no
- Details on test solutions:
- The test solutions used in the test was prepared by mechanical dispersion without using any solubilising agents.
The test item is poorly water soluble material. For preparation of the test solutions a supersaturated solution (100 mg/L nominal loading) was first prepared by dispersing/dissolving an amount of 0.1 g test item into 1000 mL test medium (ISO medium). This solution was agitated by orbital shaker overnight and then the non-dissolved test material was separated by filtration through a membrane filter (0.22 µm) in order to obtain the saturated test solution (i.e. 100 % v/v saturated solution). The test solutions of subsequent concentrations were prepared by appropriate dilution of this stock solution. - Test organisms (species):
- Daphnia magna
- Details on test organisms:
- TEST ORGANISM
- Common name: Daphnia magna (Straus)
- Source: Laboratory of Hydrobiology (Central Agricultural Office, Directorate of Plant-, and Soil Protection) 2100 Gödöllő, Kotlán S. u. 3. Hungary
- Age of parental stock (mean and range, SD): Less than 24 hours old
- Feeding during test: no
ACCLIMATION
- Acclimation period: no
- Acclimation conditions: same as test - Test type:
- static
- Water media type:
- other: ISO medium
- Limit test:
- no
- Total exposure duration:
- 48 h
- Hardness:
- approximate 249 mg/L
- Test temperature:
- 19.2 – 20.2°C.
- pH:
- 7.19 – 8.00
- Dissolved oxygen:
- 7.91 – 8.38 mg/L
- Salinity:
- not specified
- Conductivity:
- not specified
- Nominal and measured concentrations:
- nominal concentrations: 6.25, 12.5, 25, 50 and 100 % v/v saturated solution
geometric mean concentrations: NA, 0.20, 0.28, 0.77 and 1.83 mg/L - Details on test conditions:
- TEST SYSTEM
- Test vessel: glass beaker
- Medium volume per beaker: at least 40 mL
- No. of organisms per vessel: 5
- No. of vessels per concentration (replicates): 4
- No. of vessels per control (replicates): 4
OTHER TEST CONDITIONS
- Photoperiod: 16 h light and 8 h darkness
- Light intensity: 614 lux
RANGE-FINDING STUDY
- Test concentrations: 1, 10 and 100 mg/L (plus control)
- Results used to determine the conditions for the definitive study: no immobilisation at 10 mg/L and below, 100% immobilisation at 100 mg/L - Reference substance (positive control):
- yes
- Remarks:
- Potassium dichromate, experimantal phase: 07 – 08 March 2017
- Key result
- Duration:
- 48 h
- Dose descriptor:
- EC50
- Effect conc.:
- 1.19 mg/L
- Nominal / measured:
- meas. (geom. mean)
- Conc. based on:
- test mat.
- Basis for effect:
- mortality
- Remarks on result:
- other: measured value for hydrat
- Duration:
- 48 h
- Dose descriptor:
- NOEC
- Effect conc.:
- 0.28 mg/L
- Nominal / measured:
- meas. (geom. mean)
- Conc. based on:
- test mat.
- Basis for effect:
- mortality
- Remarks on result:
- other: measured value for hydrat
- Duration:
- 48 h
- Dose descriptor:
- LOEC
- Effect conc.:
- 0.77 mg/L
- Nominal / measured:
- meas. (geom. mean)
- Conc. based on:
- test mat.
- Basis for effect:
- mortality
- Remarks on result:
- other: measured value for hydrat
- Key result
- Duration:
- 48 h
- Dose descriptor:
- EC50
- Effect conc.:
- 0.98 mg/L
- Nominal / measured:
- meas. (geom. mean)
- Conc. based on:
- test mat.
- Basis for effect:
- mortality
- Remarks on result:
- other: calculated value for anhydrous substance
- Duration:
- 48 h
- Dose descriptor:
- NOEC
- Effect conc.:
- 0.23 mg/L
- Nominal / measured:
- meas. (geom. mean)
- Conc. based on:
- test mat.
- Basis for effect:
- mortality
- Remarks on result:
- other: calculated value for anhydrous substance
- Results with reference substance (positive control):
- 24h EC50: 1.41 mg/L (95 % confidence limits: 1.19 – 1.68 mg/L)
- Reported statistics and error estimates:
- For determination of the ECx values Probit analysis was performed using SPSS software. Other endpoints were determined directly from the raw data.
- Validity criteria fulfilled:
- yes
- Conclusions:
- In this 48-hour static acute toxicity test with Daphnia magna the effects of Cerium(IV) sulfate tetrahydrate on the mobility was determined. The 48-h EC50 value was determined to be 1.19 mg/L (hydrated substance) and 0.98 mg/L (calculated for anhydrous substance). The 48-h NOEC was determined to be 0.28 mg/L (hydrated substance) and 0.23 mg/L (calculated for anhydrous substance).
- Executive summary:
The purpose of this study was to evaluate the influence of the test item Cerium(IV) sulfate tetrahydrate on on the mobility, respectively survival of Daphnia magna in a static test system. Young Daphnia were exposed in an immobilisation test to aqueous test media containing the test item at 6.25, 12.5, 25, 50 and 100 % v/v saturated solution were ((corresponding to NA, 0.20, 0.28, 0.77 and 1.83 mg/L (calculated geometric mean measured concentrations)). Twenty Daphnia, divided into four groups of five animals each were exposed to the test item concentrations or run as control for 48 hours. The 48-h EC50 value was determined to be 1.19 mg/L (hydrated substance) and 0.98 mg/L (calculated for anhydrous substance). The 48-h NOEC was determined to be 0.28 mg/L (hydrated substance) and 0.23 mg/L (calculated for anhydrous substance).
Reference
Description of key information
The 48-h EC50 value was determined to be 1.19 mg/L (hydrated substance) and 0.98 mg/L (calculated for anhydrous substance).
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 0.98 mg/L
Additional information
In the acute immobilisation test (reference 6.1.3-1) with Daphnia magna (STRAUS), the effects of the test item were determined according to OECD Guideline for testing of chemicals, Guideline No. 202, adopted 13th April 2004. The study was conducted in a static system over a period of 48 hours with nominal concentrations of 6.25, 12.5, 25, 50 and 100 % v/v saturated solution (corresponding to geometric measured concentrations of NA, 0.20, 0.28, 0.77 and 1.83 mg/L. The validity criteria of the test guideline were fulfilled. The 48-h EC50 value was determined to be 1.19 mg/L (hydrated substance) and 0.98 mg/L (calculated for anhydrous substance).
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