Registration Dossier
Registration Dossier
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EC number: 270-485-3 | CAS number: 68442-68-2
Partition coefficient
Administrative data
Link to relevant study record(s)
- Endpoint:
- partition coefficient
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1990-05-30 - 1990-06-27 (experimental phase)
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study with acceptable restrictions
- Remarks:
- Some information lacking, but sufficiently documented to retrieve relevant details; methodology possibly not suitable for MuC/UVCB substance with known constituents bearing different phys.chem. properties, no information on analytics given
- Guideline:
- other: none stated
- Principles of method if other than guideline:
- The partition coefficient octanol / water, in parallel the pH value, was determined.
- GLP compliance:
- yes
- Type of method:
- other: partition coefficient octanol / water, no more details stated
- Partition coefficient type:
- octanol-water
- Analytical method:
- not specified
- Type:
- Pow
- Partition coefficient:
- >= 32 967 - <= 49 000
- Temp.:
- 22 °C
- pH:
- 5.2
- Key result
- Type:
- log Pow
- Partition coefficient:
- 4.64
- Temp.:
- 22 °C
- pH:
- 5.2
- Remarks on result:
- other: mean value
- Conclusions:
- The log Pow was determined to be 4.64 in a study with acceptable restrictions (some information was lacking, but sufficiently documented to retrieve relevant details; methodology possibly not suitable for MuC/UVCB substance with known constituents bearing different phys.chem. properties, no information on analytics given).
- Executive summary:
The partition coefficient was determined to be 4.64 at 22°C and pH 5.2 in 3x2 determinations employing different volumes of the solvents.
Reference
Description of key information
logPow = 4.64 at 22°C and pH 5.2
Key value for chemical safety assessment
- Log Kow (Log Pow):
- 4.64
- at the temperature of:
- 22 °C
Additional information
Supporting information was gathered by EpiSuite estimation of the partition coefficients of representative constituents of the substance styrenated diphenylamine, i.e. representatively p-mono-styrenated diphenylamine, p,p‘-di-styrenated diphenylamine, and o,p,p‘-tri-styrenated diphenylamine. In this case the following logPow values were determined as results:
p-mono-styrenated diphenylamine:Log Kow = 5.4482
p,p‘-di-styrenated diphenylamine:Log Kow = 7.6051
o,p,p‘-tri--styrenated diphenylamine:Log Kow = 9.7620
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