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EC number: 234-846-9 | CAS number: 12036-35-0
- 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
Water solubility
Administrative data
Link to relevant study record(s)
- Endpoint:
- transformation / dissolution of metals and inorganic metal compounds
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Series on Testing and Assessment No. 29 (23-Jul-2001): Guidance document on transformation/dissolution of metals and metal compounds in aqueous media
- Qualifier:
- according to guideline
- Guideline:
- other: UN Transformation/Dissolution Protocol (T/DP) for Metals and Sparingly Soluble Metal Compounds.
- GLP compliance:
- not specified
- Type of method:
- other: Transformation/dissolution
- Type of test:
- screening transformation/dissolution test - sparingly soluble metal compounds
- Mean dissolved conc.:
- 3 µg/L
- Element analysed:
- Rhodium
- Loading of aqueous phase:
- 100 mg/L
- Incubation duration:
- 24 h
- Test conditions:
- pH 6 (5.87 - 6.09), 21.3°C
- Type of test:
- screening transformation/dissolution test - sparingly soluble metal compounds
- Mean dissolved conc.:
- 2 µg/L
- Element analysed:
- Rhodium
- Loading of aqueous phase:
- 100 mg/L
- Incubation duration:
- 24 h
- Test conditions:
- pH 8 (8.51 - 8.66), 21.2°C
- Type of test:
- full transformation/dissolution test - metals and sparingly soluble metal compounds
- Mean dissolved conc.:
- 0 µg/L
- Element analysed:
- Rhodium
- Loading of aqueous phase:
- 1 mg/L
- Incubation duration:
- 28 d
- Test conditions:
- pH 6 (5.79 - 6.35), 22.3°C
- Type of test:
- full transformation/dissolution test - metals and sparingly soluble metal compounds
- Mean dissolved conc.:
- 0.04 µg/L
- Element analysed:
- Rhodium
- Loading of aqueous phase:
- 10 mg/L
- Incubation duration:
- 7 d
- Test conditions:
- pH 6 (5.76 - 6.37), 22.3°C
- Type of test:
- full transformation/dissolution test - metals and sparingly soluble metal compounds
- Mean dissolved conc.:
- 0.52 µg/L
- Element analysed:
- Rhodium
- Loading of aqueous phase:
- 100 mg/L
- Incubation duration:
- 7 d
- Test conditions:
- pH 6 (5.75 - 6.37), 22.3°C
- Conclusions:
- The net concentration changes for the 1 mg L-1 loadings at 28 days, and for the 10 and 100 mg L-1 loadings at 7 days for rhodium (III) oxide were just above the sub-µg L-1 detection limits. At a loading rate of 10 mg L-1 a concentration of 0.04 µg L-1 was detected and at a loading rate of 100 µg L-1 a concentration of 0.52 µg L-1 was detected, after 7 days. After 28 days, at a loading rate of 1 mg L-1, 0 µg L-1 was detected.
- Executive summary:
Skeaff and Beaudoin (2011) is a guideline transformation dissolution study. As this is the standard approach for assessing poorly soluble metal substances it is considered to be suitable for use as the key study for this endpoint.
The net concentration changes for the 1 mg L-1 loadings at 28 days, and for the 10 and 100 mg L-1 loadings at 7 days for rhodium (III) oxide were just above the sub-µg L-1 detection limits. At a loading rate of 10 mg L-1 a concentration of 0.04 µg L-1 was detected and at a loading rate of 100 µg L-1 µg L-1 a concentration of 0.52 µg L-1 was detected, after 7 days. After 28 days, at a loading rate of 1 mg L-1, 0 µg L-1 was detected.
Reference
Description of key information
The net concentration changes for the 1 mg L-1 loadings at 28 days, and for the 10 and 100 mg L-1 loadings at 7 days for rhodium (III) oxide were just above the sub-µg L-1 detection limits. At a loading rate of 10 mg L-1 a concentration of 0.04 µg L-1 was detected and at a loading rate of 100 µg L-1 a concentration of 0.52 µg L-1 was detected, after 7 days. After 28 days, at a loading rate of 1 mg L-1, 0 µg L-1 was detected.
Key value for chemical safety assessment
- Water solubility:
- 0 µg/L
- at the temperature of:
- 22 °C
Additional information
Skeaff and Beaudoin (2011) is a guideline transformation dissolution study. As this is the standard approach for assessing poorly soluble metal substances it is considered to be suitable for use as the key study for this endpoint.
The net concentration changes for the 1 mg L-1 loadings at 28 days, and for the 10 and 100 mg L-1 loadings at 7 days for rhodium (III) oxide were just above the sub-µg L-1 detection limits. At a loading rate of 10 mg L-1 a concentration of 0.04 µg L-1 was detected and at a loading rate of 100 µg L-1 a concentration of 0.52 µg L-1 was detected, after 7 days. After 28 days, at a loading rate of 1 mg L-1, 0 µg L-1 was detected.
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