Registration Dossier
Registration Dossier
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EC number: 244-508-2 | CAS number: 21656-02-0
Water solubility
Administrative data
Link to relevant study record(s)
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- A simplified water solubility test was followed. A known quantity of the test item was weighed into a conical flask and 20 mL of water was added. The flasks were stoppered and agitated in an orbital shaker water bath. After 24 hours, flasks were removed and allowed to equilibrate for 24 hours prior to filtering with a 0.1 μm cellulose nitrate membrane filter. ICP-OES was used to determine the concentration of the PGM in the resulting solution.
- GLP compliance:
- no
- Type of method:
- flask method
- Water solubility:
- 0 g/L
- pH:
- 7.3
- Remarks on result:
- other: +/- 0.00005 g/L; temperature not reported
- Details on results:
- The amount of test material used was sufficient to produce a saturated solution for substances with water solubility below 10 g/L. For substances that were soluble at this level, >10 g/L was reported as the limit of solubility.
- Conclusions:
- The water solubility of rhodium trihydroxide has been determined to be 0.0001 g/L of solution using a simplified water solubility test.
- Executive summary:
Gregory (2014) is a not GLP compliant but follows a well described simplified water solubility method. It is considered to be suitable for use as the key study for this endpoint; The water solubility of rhodium trihydroxide has been determined to be 0.0001 g/L of solution using a simplified water solubility test.
Reference
Water solubility of substance using the simplified test;
| Substance | CAS Number | Water solubility (g/L) | pH |
| Rhodium trihydroxide | 21656-02-0 | 0.0001 +/- 0.00005 | 7.3 |
Description of key information
The water solubility of rhodium trihydroxide has been determined to be 0.0001 g/L of solution using a simplified water solubility test.
Key value for chemical safety assessment
- Water solubility:
- 0 g/L
Additional information
Gregory (2014) is a not GLP compliant but follows a well described simplified water solubility method. It is considered to be suitable for use as the key study for this endpoint; The water solubility of rhodium trihydroxide has been determined to be 0.0001 g/L of solution using a simplified water solubility test.
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