Registration Dossier
Registration Dossier
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EC number: 629-679-7 | CAS number: 42482-06-4
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:
- Jan. 2012 to June 2012
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- other: OECD 111
- Qualifier:
- according to guideline
- Guideline:
- other: OECD107
- Principles of method if other than guideline:
- In order to undertake a hydrolysis study, water solubility was estimated using the guideline methods of OECD 107. As the substance exhibits surface active properties, an estimation of the solubility in water was made using a visual turbidity method.
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- flask method
- Remarks:
- OECD 107
- Water solubility:
- ca. 20 mg/L
- Temp.:
- 20 °C
- pH:
- 7
- Details on results:
- Samples of concentration 10 ppm (mg/L) gave a clear appearance for the time periods of 0 min, 3 min. Concentrations of 30 mg/L were hazy. This indicates that the solubility of OSA is approximately 20 ppm. However, this approach only gives qualitative data.
This was confirmed by EI-GC/MS. Low recovery rates were indicative of rapid hydrolysis. - Conclusions:
- Interpretation of results: slightly soluble (0.1-100 mg/L) Solubility is 20 mg/L.
The solubility of octenyl succinic anhydride (OSA) was determined using visual observation of turbidity of solutions of various concentrations, as indicated by OECD 107 and 111 guidelines for surface-active substances. Samples of concentration 10 ppm (mg/L) gave a clear appearance, wherease concentrations of 30 mg/L were hazy. This indicates that the solubility of OSA is approximately 20 ppm. This was confirmed by EI-GC/MS. The water solubilty of OSA is approximately 20 mg/L in aqueous buffer pH 7 at 20°C. - Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- Jan. 2012-September 2012
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- other: OECD 107
- Principles of method if other than guideline:
- For surface active materials, the OECD guideline 107 states that the Kow must be determined by dividing the n-octanol solubility value by the water solubility value.
- GLP compliance:
- yes (incl. QA statement)
- Water solubility:
- ca. 20 mg/L
- Temp.:
- 22 °C
- pH:
- 7
- Remarks on result:
- other: Concentration verified analytically (by EI-GC/MS) to be 10.44 mg/ml (low due to partial hydrolysis)
- Details on results:
- Samples of concentrations 5, 10 and 20 ppm (mg/L) gave a clear appearance for the time periods of 0 min and 3 min. The solubility of TPSA is approximately 20 ppm.
- Conclusions:
- Interpretation of results (migrated information): slightly soluble (0.1-100 mg/L) Solubility is approximately 20 mg/L.
Octenyl succinic anhydride (OSA), which is surface-active and hydrolytically unstable, was tested for water solubility in an aqueous buffer of pH 7, at 22 °C. The solubility of OSA was estimated by visual observation and confirmed analytically to be approximately 20 ppm (mg/L).
Referenceopen allclose all
|
Visual Observation |
|
Sample concentration |
0 min |
3 min |
5 |
- |
- |
10 |
- |
- |
20 |
- |
- |
30 |
+ |
+ |
34* |
|
- |
Note: Clear (transparent, “ – “) to Cloudy (hazy, immiscible microdroplets, “ +++++”). * with cosolvent.
|
Visual Observation |
|
Sample concentration |
0 min |
3 min |
5 |
- |
- |
10 |
- |
- |
20 |
- |
- |
30 |
+ |
+ |
Note: Clear (transparent, “ – “) to Cloudy (hazy, immiscible microdroplets, “ +++++”).
Description of key information
Water solubility is approximately 20 mg/l at 20 °C.
Key value for chemical safety assessment
- Water solubility:
- 20 mg/L
- at the temperature of:
- 20 °C
Additional information
The water solubility of octenyl succinic anhydride is approximately 20 mg/l at 20 °C, by visual observation as indicated in OECD 107 and OECD 111.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
