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EC number: 939-597-6 | CAS number: 68610-66-2
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:
- 13 Feb 2012
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.6 (Water Solubility)
- Deviations:
- yes
- Remarks:
- No analytical measurement, but visual inspection of the solution. Reason: completely miscible in all concentrations and gelling for concentration > 330 g/L.
- GLP compliance:
- no
- Type of method:
- flask method
- Water solubility:
- > 330 g/L
- Temp.:
- 20 °C
- pH:
- 10.1
- Remarks on result:
- other: With increasing amount of test item (> 330 g/L) a gel is formed.
Reference
Preliminary test:
In a preliminary test, the following aliquots of the test item were added successively to 2 g of water and stirred slowly for 10 minutes:
Aliquot |
Weighed sample, g |
A |
0.1 |
B |
0.5 |
C |
1.0 |
D |
2.0 |
While being added to the water, solutions with increasing viscosity were being formed, resulting in a gel after the addition of 2 g of the test item.
Study results:
With 2 g of the test item being mixed into 2 g of water, a gel with a total weight of 4 g has been formed. This was equivalent to 50 % (w/w) of test item in solution/gel. As the density of water will significantly increase with addition of the test item, it can be concluded that water solubility is about 500 g/L, resulting in a gel. Due to the fact that the gel formation is a continuous process and no discrete point can be identified at which dissolution in water switches to gelling, the water solubility can be approximated to > 330 g/L.
Description of key information
> 330 g/L at 20 °C, pH = 10.1
Key value for chemical safety assessment
Additional information
The water solubility of the substance was determined according to OECD 105 (flask method). Gel formation at concentrations > 330 g/L was observed. The substance is miscible with water in any proportion.
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