Registration Dossier
Registration Dossier
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EC number: 249-530-6 | CAS number: 29240-17-3
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:
- 2015
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- flask method
- Specific details on test material used for the study:
- EC name: Tert-pentyl peroxypivalate
Trade name: Trigonox 125-C75
CAS: 29240-17-3
Batch/Lot no.: 1205442102
Purity: 71.4 %
Appearance: Clear colorless liquid
Expiry date: January 1, 2017
Storage: Approx. -25 °C - Key result
- Water solubility:
- 504 mg/L
- Conc. based on:
- test mat.
- Loading of aqueous phase:
- 2 g/L
- Incubation duration:
- 72 h
- Temp.:
- 20 °C
- pH:
- 7
- Conclusions:
- The water solubility of the test item was determined to be 504 mg/L at pH 7 at 20 °C.
- Executive summary:
The water solubility of tert-pentyl peroxypivalate was determined according to OECD guideline 105 at a temperature of 20 °C. The data on water solubility represent the saturation mass concentration of the test substance in water. In the definitive test the determined result for water solubility of the test substance was an average value for the three time points 24, 48 and 72 hours. The average result was calculated to be 504 mg/L. The pH value of the test solution at the different time points was measured to be 7. The temperature during the test varied between 19.6 and 20.2 °C.
Reference
Results definitive test Concentration
Time | I | II | Average | Difference |
h | mg/L | mg/L | mg/L | % |
24 | 518 | 525 | 521 |
|
48 | 514 | 489 | 501 | -3.8* |
72 | 475 | 502 | 488 | -2.6* |
Average |
|
| 504 |
|
* Difference in average concentration between two consecutive time points
Description of key information
The water solubility of the test item was determined to be 504 mg/L at pH 7 at 20 °C.
Key value for chemical safety assessment
- Water solubility:
- 504 mg/L
- at the temperature of:
- 20 °C
Additional information
The water solubility of tert-pentyl peroxypivalate was determined according to OECD guideline 105 at a temperature of 20 °C. The data on water solubility represent the saturation mass concentration of the test substance in water. In the definitive test the determined result for water solubility of the test substance was an average value for the three time points 24, 48 and 72 hours. The average result was calculated to be 504 mg/L. The pH value of the test solution at the different time points was measured to be 7. The temperature during the test varied between 19.6 and 20.2 °C.
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