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EC number: 943-325-1 | 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
- Study period:
- 24 November 2016 to 24 April 2017
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Remarks:
- no analytical determination of the water solubility was possible, therefore the result is based on visual observations
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- EU Method A.6 (Water Solubility)
- Deviations:
- yes
- Remarks:
- see below
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- Deviations:
- yes
- Remarks:
- see below
- Principles of method if other than guideline:
- The standard EC method A6 and OECD method 105 was not applicable to the substance due to the high indeterminable saturation levels produced. It was therefore not possible to prepare samples at five times the saturation level as recommended in the guidelines. No analysis could be performed for the main test due to the high solubility producing unfilterable mixtures. Therefore the water solubility was determined based on visual inspection.
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- flask method
- Key result
- Water solubility:
- > 55 - < 60 vol%
- Conc. based on:
- other: visual inspection
- Incubation duration:
- 96 h
- Temp.:
- 20 °C
- pH:
- 7.9
- Remarks on result:
- other: details see table below
- Conclusions:
- The water solubility of the substance is 55-60%
- Executive summary:
In a test using the flask method, water was added to increasing amounts of the substance. The increasing concentrations were inspected visually to assess solubility. The water solubility was between 55 and 60%. Analytical determination of the concentrations was not possible.
Reference
Concentration (%w/w) |
pH |
|
5.02 |
6.9 |
Dark purple solution with no excess test item |
25.0 |
7.4 |
Dark purple solution with no excess test item |
50.0 |
7.6 |
Dark purple solution with no excess test item |
54.9 |
7.9 |
Dark purple solution with no excess test item |
59.9 |
7.9 |
Dark purple solution with excess test item |
65.0 |
n/a |
Dark purple solid with a small amount of mobile solution |
77.6 |
n/a |
Dark purple solid |
74.5 |
n/a |
Dark purple solid |
94.9 |
n/a |
Dark purple solid |
Description of key information
In a test using the flask method, water was added to increasing amounts of the substance. The increasing concentrations were inspected visually to assess solubility. The water solubility was between 55 and 60%. Analytical determination of the concentrations was not possible.
Key value for chemical safety assessment
- Water solubility:
- 10 g/L
- at the temperature of:
- 20 °C
Additional information
For risk assessment the water solubility will be set at 1E05 mg/L(see value above), which is the maximum value as validated in the EUSES program
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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