Registration Dossier
Registration Dossier
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EC number: 274-417-3 | CAS number: 70210-20-7
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:
- 7 December 2017 - 19 January 2018
- 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)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7840 (Water Solubility)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- flask method
- Specific details on test material used for the study:
- SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: RR-24-001
- Expiration date of the lot/batch: July 1, 2022
STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: at room temperature (20 +/- 5°C) in the dark - Water solubility:
- 220.6 g/L
- Conc. based on:
- test mat. (dissolved fraction)
- Loading of aqueous phase:
- 500 g/L
- Incubation duration:
- 24 - 72 h
- Temp.:
- 20 °C
- pH:
- ca. 6.9
- Remarks on result:
- completely miscible
- Details on results:
- A first approach was conducted with 10 ml of water added to 10 g test item (theoretical concentration: 1000 g/l, five times the test item amount derived from the pre-test). After 48 hours of incubation at 30°C, the test item was completely soaked with the water, with no liquid remaining. The test item turned into a thick paste; a saturated solution cannot be separated.
The second approach was conducted with 10 ml of water added to 5 g of test item. Here, a saturated solution with remaining visible test item resulted.
The solution was filtered and the concentration of the test item was determined in the clear aqueous phase (saturated solution) separated. - Conclusions:
- The water solubility of Reactive Red 24 was determined to be 220.6 g/L using the shake flask method at 20°C.
- Executive summary:
The water solubility of the test item was determined using the shake flask method. The saturation mass concentrations of the test item were determined using HPLC. The results showed no tendency to increase time-dependent; therefore the study is considered to be valid. Corresponding to the analyses the water solubility was determined to be 220.6 g/L at 20 °C.
Reference
Description of key information
The water solubility of Reactive Red 24 was determined to be 220.6 g/L using the shake flask method at 20°C.
Key value for chemical safety assessment
- Water solubility:
- 220.6 g/L
- at the temperature of:
- 20 °C
Additional information
The water solubility of the test item was determined using the shake flask method. The saturation mass concentrations of the test item were determined using HPLC. The results showed no tendency to increase time-dependent; therefore the study is considered to be valid. Corresponding to the analyses the water solubility was determined to be 220.6 g/L at 20 °C.
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