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EC number: 208-536-9 | CAS number: 532-40-1
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:
- 10 Jan - 20 Jan 2017
- 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)
- Version / remarks:
- adopted in 2008
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- flask method
- Specific details on test material used for the study:
- Storage conditions: Ambient temperature (10 to 30 °C), dry
- Water solubility:
- ca. 176 g/L
- Conc. based on:
- test mat. (dissolved fraction)
- Temp.:
- 20 °C
- Remarks on result:
- other: pH 2.5 at 24 °C
Reference
Results
Table 1 – Preliminary test results
Test item amount [mg] |
Added vol. of distilled water [mL] |
Total volume [mL] |
Appearance of mixture |
95.3 |
0.1 |
0.1 |
Not dissolved |
0.4 |
0.5 |
||
0.5 |
1.0 |
Dissolved |
Water solubility was found to be > 10 mg/L. Therefore, the flask method was used to determine water solubility of the test item.
After equilibration time, precipitate was seen in the flasks excluding the blank experiment. Water solubility was calculated from measured unrounded concentration values and not from rounded values.
Table 2 – Test item water solubility
Experiment |
24 h experiment |
48 h experiment |
72 h experiment |
Blank experiment (72 h) |
Test item amount [g] |
10.02 |
10.01 |
10.03 |
-- |
Demineralized water amount [mL] |
10
|
|||
Stirring time at 30 °C [h] |
24 |
48 |
72 |
72 |
pH at 24 °C |
2.5 |
6.4 |
||
Dilution factor |
400 |
|||
Measured concentration [mg/L] |
438.87/433.20 |
448.33/439.89 |
444.62/438.87 |
--/-- |
Mean concentration [mg/L] |
436.04 |
444.11 |
441.75 |
-- |
Water solubility [g/L] |
174.4 |
177.6 |
176.7 |
-- |
The mean water solubility of the test item at 20 °C was determined to be cs= 176.3 g/L (± 1.66 g/L).
Description of key information
176 g/L (± 1.66 g/L) at 20 °C (OECD 105, Flask Method)
Key value for chemical safety assessment
- Water solubility:
- 176 g/L
- at the temperature of:
- 20 °C
Additional information
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