Registration Dossier
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EC number: 250-465-0 | CAS number: 31098-20-1
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:
- 13 Sep 2011
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study with acceptable restrictions
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- Deviations:
- yes
- Remarks:
- 24h equilibration period not achieved
- GLP compliance:
- no
- Type of method:
- flask method
- Water solubility:
- 76.9 other: w/w%
- Temp.:
- 25 °C
- Remarks on result:
- other: pH not given. Reported water solubility in % w/w: 76.9.
- Details on results:
- Preliminary test (tare weight: 99.72 g, water weight: 40.00 g):
The solution was clear for the total mass up to 241 g (concentration 71.6 % w/w). The water amount was reduced to 20 g and the main test was performed.
Main test (tare weight: 94.80 g, water weight: 20.00 g):
The solution was murky for the total mass of 182.60 g. The maximal total mass of the flask containing clear solution was 181.40 g, what corresponds to the concentration of 76.9% w/w.
Reference
Main test results:
Total mass, g | Concentration, % w/w | Solution appearance |
174.81 | 75.0 | clear |
175.40 | 75.2 | clear |
176.32 | 75.5 | clear |
176.91 | 75.6 | clear |
177.44 | 75.8 | clear |
178.50 | 76.1 | clear |
179.71 | 76.4 | clear |
181.40 | 76.9 | clear |
182.60 | 77.2 | murky (after 2h stirrring) |
According to the definition of concentration in % w/w (see Any other information of materials and methods):
76.9% of the substance was dissolved in (100% - 76.9%) = 23.1% of water.
substance/water ratio: 76.9/23.1 = 3.329
Description of key information
76.9 w/w% at 25 °C
Key value for chemical safety assessment
Additional information
Based on OECD Guideline 105.
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