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EC number: 201-739-3 | CAS number: 87-32-1
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:
- 02 Oct - 09 Oct 2015
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.6 (Water Solubility)
- Version / remarks:
- adopted in 2014
- GLP compliance:
- no
- Type of method:
- flask method
- Specific details on test material used for the study:
- Storage conditions: ambient temperature (10 – 30 °C)
- Water solubility:
- ca. 0.88 g/L
- Temp.:
- 20 °C
- pH:
- ca. 3.2
Reference
Results
Table 1 – Preliminary test results
Test item amount [mg] |
Added vol. of distilled water [mL] |
Total volume [mL] |
Appearance of mixture |
67.5 |
0.1 |
0.1 |
undissolved |
0.4 |
0.5 |
||
0.5 |
1.0 |
||
1.0 |
2.0 |
||
8.0 |
10.0 |
Water solubility was found to be > 10 mg/L. Therefore, the flask method was used to determine water solubility of the test item.
Flask Method
After equilibration, precipitate was seen in the flasks with the
exception of the blank. Water solubility was calculated from measured
and unrounded concentration values and not from rounded values given in
Table 2.
Table 2 – Test item water solubility
Experiment |
24 h experiment |
48 h experiment |
72 h experiment |
Blank experiment (72 h) |
Test item amount [g] |
1.69 |
1.70 |
1.70 |
-- |
Demineralized water amount [mL] |
50 |
|||
Stirring time at 30 °C [h] |
24 |
48 |
72 |
72 |
pH at 23 °C |
3.2 |
6.0 |
||
Aliquot of the flasks [mL] |
0.1 |
|||
Dilution to volume [mL] |
1 |
|||
Dilution factor |
10 |
|||
Measured concentration [mg/L] |
88.32 |
87.45 |
88.23 |
-- |
Mean concentration [mg/L] |
88.42 |
87.55 |
88.19 |
-- |
Water solubility [g/L] |
0.884 |
0.876 |
0.882 |
-- |
The water solubility of the test item at 20 °C was determined to be cs= 0.88 g/L (±0.005 g/L).
Description of key information
0.88 g/L (± 0.005 g/L) at 20 °C and pH 3.2(OECD 105, Flask method)Key value for chemical safety assessment
- Water solubility:
- 0.88 g/L
- at the temperature of:
- 20 °C
Additional information
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