Registration Dossier
Registration Dossier
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EC number: - | CAS number: -
Water solubility
Administrative data
Link to relevant study record(s)
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.6 (Water Solubility)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- flask method
- Specific details on test material used for the study:
- SOURCE OF TEST MATERIAL
- Source and lot/batch number of test material: 4133/00-K0
- Expiration date of the lot/batch: June 08, 2021
- Purity test date: Certificate dated from December 03, 2020, Umicore, Germany
STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: Room temperature (10°C to 30 °C), dark, dry
FORM OF TEST MATERIAL
- Content: Pt 1.820 % (ICP-OES)
- Form: liquid
- Appearance: Pale yellow clear liquid - Water solubility:
- > 1 000 g/L
- Temp.:
- 20 °C
- pH:
- < 1.1
- Conclusions:
- The water solubility of the test item at 20 °C was determined to be > 1000 g/l.
- Executive summary:
Huber-Lohr (2021) is a GLP-compliant study following OECD guideline 105 and EU method A6. It is reliable without restrictions and can be used as a key study for this endpoint. The flask method was performed. The water solubility of the test item at 20 °C was determined to be > 1000 g/l.
Reference
Individual results
Preliminary test
In a stepwise procedure, increasing volumes of demineralized water were added at room temperature to a defined amount of the test item. After each addition of an amount of water the mixture was stirred and visually checked for any undissolved particles.
Table 1: Results of the preliminary test
Amount of test item / mg | Added volume of demineralized water / ml | Total volume of demineralized water / ml | Appearance of mixture |
109.2 | 0.1 | 0.1 | dissolved |
0.4 | 0.5 | dissolved | |
0.5 | 1.0 | dissolved | |
1.0 | 2 | dissolved | |
8.0 | 10 | dissolved |
The preliminary test showed that the water solubility of the test item was > 1000 g/l. For this reason, instead of the main test a miscibility test was performed as described in chapter 4.1.2. Within the miscibility test it was investigated if the test item was miscible with demineralized water in different ratios.
Miscibility test
Table 2: Results of the miscibility test
Experiment | A | B | C |
Amount of test item (ml) | 0.5 | 2.5 | 4.5 |
Amount of demin. water (ml) | 4.5 | 2.5 | 0.5 |
Ratio | 1:9 | 1:1 | 9:1 |
pH value | 1.1 | 0.4 | 0.2 |
Appearance of the mixture | dissolved | dissolved | dissolved |
The test item Platinum concentrate P was miscible with water at room temperature (T = 23.7 °C) in all tested ratios (1:1, 1:9, 9:1).
Description of key information
The water solubility of the test item at 20 °C was determined to be > 1000 g/l.
Key value for chemical safety assessment
- Water solubility:
- 1 000 g/L
- at the temperature of:
- 20 °C
Additional information
Huber-Lohr (2021) is a GLP-compliant study following OECD guideline 105 and EU method A6. It is reliable without restrictions and can be used as a key study for this endpoint. The flask method was performed. The water solubility of the test item at 20 °C was determined to be > 1000 g/l.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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