Registration Dossier
Registration Dossier
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EC number: 229-158-0 | CAS number: 6420-33-3
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 25 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:
- > 5 - < 10 vol%
- Conc. based on:
- other: visual inspection
- Incubation duration:
- 96 h
- Temp.:
- 20 °C
- pH:
- >= 7.7 - <= 8
- Remarks on result:
- other: details see table below
- Conclusions:
- The water solubility of the substance is 5-10%
- 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 5 and 10%. Analytical determination of the concentrations was not possible.
Reference
Concentration (%w/w) |
pH |
|
5.04 |
7.7 |
Dark orange/amber colored solution with no excess test item |
10.0 |
8.0 |
Dark orange/amber colored solution with excess test item |
15.1 |
8.4 |
Dark orange/amber colored solution with excess test item |
20.0 |
8.5 |
Dark orange/amber colored solution with excess test item |
24.9 |
n/a |
Dark orange/amber colored solid |
50.0 |
n/a |
Dark orange/amber colored solid |
74.8 |
n/a |
Dark orange/amber colored solid |
94.8 |
n/a |
Green 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 5 and 10%. Analytical determination of the concentrations was not possible.
Key value for chemical safety assessment
- Water solubility:
- 50 g/L
- at the temperature of:
- 20 °C
Additional information
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