Registration Dossier
Registration Dossier
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EC number: 271-766-3 | CAS number: 68607-67-0
Water solubility
Administrative data
Link to relevant study record(s)
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study
- Justification for type of information:
- 2019 study performed to guidelines
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- Principles of method if other than guideline:
- The substance is considered UVCB with two main types of component (effectively, monomer and dimer).
As the chemical composition of these two component types are quite different, each was asessed for solubility in water separately. - GLP compliance:
- no
- Type of method:
- flask method
- Specific details on test material used for the study:
- Appearance: Pale straw-coloured clear liquid
EXPY17KT013 - Water solubility:
- ca. 116 mg/L
- Conc. based on:
- other: Component 1 (monomer)
- Loading of aqueous phase:
- 150 g/L
- Incubation duration:
- 4 d
- Temp.:
- 25 °C
- pH:
- > 8 - < 9.2
- Water solubility:
- < 10 mg/L
- Conc. based on:
- other: Component 2 (dimer)
- Loading of aqueous phase:
- 150 g/L
- Incubation duration:
- 4 d
- Temp.:
- 25 °C
- pH:
- > 8 - < 9.2
- Details on results:
- For the 'dimer' type components, an accurate solublity was not possible to obtain in view of limitation on quantification limits and background 'noise' from the analysis system. It is also possible that the substance hydrolysed back to the monomer form
- Conclusions:
- Of the two main types of component, those with the lower molecular weight demonstrated the higher water solulbity of ca 100 mg/l, while the 'dimer' type components were not detectable in water within the limitations of the methods possible to acheive and had solubility < 10 mg/l.
Reference
Description of key information
Of the two main types of component, those with the lower molecular weight demonstrated the higher water solulbity of ca 100 mg/l, while the 'dimer' type components were not detectable in water within the limitations of the methods possible to acheive and had solubility < 10 mg/l.
Key value for chemical safety assessment
- Water solubility:
- 100 mg/L
- at the temperature of:
- 25 °C
Additional information
A figure of 100 mg/l is used for the CSA
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