Registration Dossier
Registration Dossier
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EC number: 235-521-4 | CAS number: 12262-32-7 This substance is identified in the Colour Index by Colour Index Constitution Number, C.I. 53571.
Partition coefficient
Administrative data
- Endpoint:
- partition coefficient
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 13 November - 2 December, 2015
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with national standard methods with acceptable restrictions
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 015
- Report date:
- 2015
Materials and methods
- Principles of method if other than guideline:
- The test was not feasible to complete
- GLP compliance:
- no
- Remarks:
- not mandatory
- Type of method:
- other: no method was suitable
- Partition coefficient type:
- octanol-water
Test material
- Reference substance name:
- 1-naphthalenesulfonic acid, 5-[(4-hydroxyphenyl)amino]-8-(phenylamino)-, reaction products with sodium sulfide (Na2(Sx)), leuco derivatives
- EC Number:
- 235-521-4
- EC Name:
- 1-naphthalenesulfonic acid, 5-[(4-hydroxyphenyl)amino]-8-(phenylamino)-, reaction products with sodium sulfide (Na2(Sx)), leuco derivatives
- Cas Number:
- 12262-32-7
- Molecular formula:
- not applicable
- IUPAC Name:
- Reaction product of 1-naphthalenesulfonic acid, 5-[(4-hydroxyphenyl)amino]-8-(phenylamino)- with sodium polysulfide, leuco derivatives
- Test material form:
- solid
Constituent 1
Study design
- Analytical method:
- not specified
Results and discussion
Partition coefficient
- Key result
- Type:
- Pow
- Remarks on result:
- not determinable
- Details on results:
- Therefore it was not possible to determine de Pow.
Any other information on results incl. tables
The partition coefficient of the test item has been assessed with regard to A8 Partition Coefficient of EC 440/2008. The standard methods were considered not applicable for following reasons:
- the test item is a UVCB
- the solubility of test item in several reverse phase solvents (methanol, acetone, acetonitrile) was insoluble or only soluble in small amounts
- due to low solubility in water and n-octanol an estimation of partition coefficient based on these solubilities would be inaccurate
- there is no defined structure, therefore an estimation based on QSAR calculation is no possible
Applicant's summary and conclusion
- Conclusions:
- The log Pow was not determinable.
- Executive summary:
The log Pow was not determinable due to intrinsic properties of the test item. The test item is a UVCB and the standard methods are not applicable to complex mixtures. The solubility of test item in several reverse phase solvents (methanol, acetone, acetonitrile) was insoluble or only soluble in small amounts. There is no defined structure, therefore an estimation based on QSAR calculation is no possible.
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