Registration Dossier
Registration Dossier
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EC number: 224-481-3 | CAS number: 4378-61-4
Partition coefficient
Administrative data
- Endpoint:
- partition coefficient
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Remarks:
- Procedure according to method of Analytical Expert Group ETAD (Ecological and Toxicological Association of Dyes and Organic Pigment Manufacturer); method similar to Annex V, A.8, 1.6.1, Directive 67/548/EEC
Cross-reference
- Reason / purpose for cross-reference:
- reference to same study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 005
- Report date:
- 2005
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: ETAD Analytical Expert Group
- Version / remarks:
- method for substances with very low solubilty in both, water and n-octanol
- Principles of method if other than guideline:
- Based on the determined solubilities in water and in n-octanol the partition coefficient was estimated (chapter 1.6.1, A.8). Instead of saturated solvent
systems pure solvents were used. - Type of method:
- estimation method (solubility ratio)
- Partition coefficient type:
- octanol-water
Test material
- Reference substance name:
- 4,10-dibromodibenzo[def,mno]chrysene-6,12-dione
- EC Number:
- 224-481-3
- EC Name:
- 4,10-dibromodibenzo[def,mno]chrysene-6,12-dione
- Cas Number:
- 4378-61-4
- Molecular formula:
- C22H8Br2O2
- IUPAC Name:
- 4,10-dibromonaphtho[7,8,1,2,3-nopqr]tetraphene-6,12-dione
- Test material form:
- solid: nanoform
Constituent 1
Results and discussion
Partition coefficientopen allclose all
- Type:
- log Pow
- Partition coefficient:
- 1.06
- Temp.:
- 24 °C
- pH:
- ca. 7
- Type:
- Pow
- Partition coefficient:
- 11.48
- Temp.:
- 24 °C
- pH:
- ca. 7
Any other information on results incl. tables
Solubility of C.I. Pigment Red 168 in n-octanol: 0.124 mg/l
Water solubility of C.I. Pigment Red 168 : 0.0108 mg/l
Pow PR 168 = 11.48
log Pow PR 168 = 1.06
Applicant's summary and conclusion
- Executive summary:
The log Pow of Pigment Red 168 is 1.06.
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