Registration Dossier
Registration Dossier
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EC number: 229-055-0 | CAS number: 6408-33-9 This substance is identified in the Colour Index by Colour Index Constitution Number, C.I. 19320.
Partition coefficient
Administrative data
Link to relevant study record(s)
- Endpoint:
- partition coefficient
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 107 (Partition Coefficient (n-octanol / water), Shake Flask Method)
- GLP compliance:
- no
- Type of method:
- shake-flask method to: flask method
- Partition coefficient type:
- octanol-water
- Analytical method:
- photometric method
- Type:
- log Pow
- Partition coefficient:
- ca. -1.75
- Temp.:
- 20 °C
- Remarks on result:
- other: 5.9
- Details on results:
- Concentrations of the aqueous phase were calculated directly from the absorbance values.Concentrations of the n-octanol phase were low, so calculations were performed considering concentration decay of the aqueous phase respect to the mother solution at every partition ratio.At 96 hours values reached equilibrium, and so this value was considered for final calculations making duplicate determinations of every ratio o/w.
- Conclusions:
- Partition coefficient n-octanol-water was performed according to OECD 107, Shake Flask Method. Under the experimental conditions the Log Kow resulted equal to -1.75 at 20 °C, pH 5.9
- Executive summary:
Partition coefficient n-octanol-water was performed according to OECD 107, Shake Flask Method. Under the experimental conditions the Log Kow resulted equal to -1.75 at 20 °C, pH 5.9
Reference
Description of key information
log Kow -1.75 at 20 °C, pH 5.9
Key value for chemical safety assessment
Additional information
The determination of partition coefficient n-octanol-water was performed according to OECD 107, Shake Flask Method (REACH&Colours Kft, 2014). Under the experimental conditions the logKow resulted equal to -1.75 at 20 °C, pH 5.9
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