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EC number: 233-397-6 | CAS number: 10139-58-9
- 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
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 202 (Daphnia sp. Acute Immobilisation Test)
- Deviations:
- not specified
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.2 (Acute Toxicity for Daphnia)
- Deviations:
- not specified
- GLP compliance:
- yes (incl. QA statement)
- Analytical monitoring:
- yes
- Details on sampling:
- All test concentrations sampled at 0 and 24 hours. Concentration of stock solution determined at 0 hours.
- Vehicle:
- no
- Details on test solutions:
- PREPARATION AND APPLICATION OF TEST SOLUTION (especially for difficult test substances)
- Method: 1 g/L test solution prepared in synthetic freshwater was used as a stock solution.
- Controls: Blank control included
- Evidence of undissolved material (e.g. precipitate, surface film, etc.): Not reported - Test organisms (species):
- Daphnia magna
- Details on test organisms:
- Species: Daphnia magna STRAUS (CLONE 5)
Source: Organisms received from Bayer AG, Leverkusen, Germany in 1991 and bred in house.
Holding: Maintained in M4 medium in 1L beakers with Desmodesmus subspicatus feed. Conditions support parthenogenetic reproduction.
Age: Only < 24 h old offspring used in test - Test type:
- static
- Water media type:
- freshwater
- Limit test:
- no
- Total exposure duration:
- 48 h
- Hardness:
- 250 mg CaCO3/L
- Test temperature:
- 20.4°C (mean)
20.3 - 20.6°C - pH:
- 3.3 - 8.3
pH values in the 11, 17 and 91 mg/L test concentrations were 6.1 - 7.8
pH values in the 164, 336 and 658 mg/L test concentrations were 3.3 - 5.0 - Dissolved oxygen:
- 8.1 - 8.8 mg/L
- Nominal and measured concentrations:
- Nominal: 20, 40,80, 160, 320 and 640 mg/L
Measured at 0h: 17, 31, 87, 160, 338 and 644 mg/L
Measured at 48h: 7.2, 9.8, 95, 168, 336, 672 mg/L
Geometric mean measured: 11, 17, 91, 164, 336, 658 mg/L
Geometric mean measured concentrations were used for biological evalation. - Details on test conditions:
- Exposure medium: Synthetic freshwater.
Test vessel: Round bottomed test tubes calibrated to 10 mL
Aeration: none.
Number of organisms per vessel: 5
Number of replicates: 4
Photoperiod: dark
Feeding: None during test - Reference substance (positive control):
- yes
- Remarks:
- potassium dichromate
- Duration:
- 48 h
- Dose descriptor:
- EC50
- Effect conc.:
- 120 mg/L
- Nominal / measured:
- meas. (geom. mean)
- Conc. based on:
- test mat.
- Basis for effect:
- mobility
- Remarks on result:
- other: Concentration range was 91 - 164 mg/L.
- Duration:
- 24 h
- Dose descriptor:
- EC50
- Effect conc.:
- 122 mg/L
- Nominal / measured:
- meas. (geom. mean)
- Conc. based on:
- test mat.
- Basis for effect:
- mobility
- Remarks on result:
- other: Concentration range was 91 - 164 mg/L.
- Details on results:
- 5% immobilisation at 91 mg/L at 48 hours, 100% immobilisation at 164 mg/L at 48 hours. EC50 values determined graphically.
- Results with reference substance (positive control):
- Positive control showed that the sensitivity of the organisms lay within the normal range.
- Validity criteria fulfilled:
- yes
- Remarks:
- < 10% of control organisms had been immobilised or trapped at the surface of the water. DO concentration was > 60% of air saturation value at the temperature used. Geometric mean measured concentrations after 0 and 48 h used for test evaluation.
- Conclusions:
- The 48h EC50 for rhodium (III) nitrate hydrate is 120 mg/L.
- Executive summary:
Enste-Diefenbach (2003) is a GLP compliant study following OECD guideline 202. Four replicates of five organisms were used for each test concentration and the control. Test concentrations were analysed and as they deviated by more than 20% from nominal in some concentrations mean measured concentrations were used for reporting of results. pH in the highest three test concentrations ranged from 3.3 – 5.0 and is likely to have had an impact on the study results. The study followed a standard test guideline but there are limitations, particularly due to the pH of the test solutions for the higher concentrations, therefore it is assigned a Klimisch score of 2 (reliable with restrictions).
The 48h EC50 for rhodium (III) nitrate hydrate is 120 mg/L.
Reference
Description of key information
The 48h EC50 for rhodium (III) nitrate hydrate is 120 mg/L.
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 120 mg/L
Additional information
Enste-Diefenbach (2003) is a GLP compliant study following OECD guideline 202. Four replicates of five organisms were used for each test concentration and the control. Test concentrations were analysed and as they deviated by more than 20% from nominal in some concentrations mean measured concentrations were used for reporting of results. pH in the highest three test concentrations ranged from 3.3 – 5.0 and is likely to have had an impact on the study results. The study followed a standard test guideline but there are limitations, particularly due to the pH of the test solutions for the higher concentrations, therefore it is assigned a Klimisch score of 2 (reliable with restrictions).
The 48h EC50 for rhodium (III) nitrate hydrate is 120 mg/L.
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