Registration Dossier
Registration Dossier
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EC number: 256-458-9 | CAS number: 49744-28-7
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:
- other: 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:
- 2 010
- Report date:
- 2010
Materials and methods
Test guideline
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- EU Method A.8 (Partition Coefficient)
- 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).
- Type of method:
- other: 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
- Partition coefficient type:
- octanol-water
Test material
- Reference substance name:
- 1-[(4-methoxy-2-nitrophenyl)azo]-2-naphthol
- EC Number:
- 256-458-9
- EC Name:
- 1-[(4-methoxy-2-nitrophenyl)azo]-2-naphthol
- Cas Number:
- 49744-28-7
- Molecular formula:
- C17H13N3O4
- IUPAC Name:
- 1-[(4-methoxy-2-nitrophenyl)diazenyl]-2-naphthol
- Test material form:
- solid
Constituent 1
Results and discussion
Partition coefficientopen allclose all
- Type:
- log Pow
- Partition coefficient:
- 4.33
- Temp.:
- 22 °C
- pH:
- ca. 7
- Type:
- Pow
- Partition coefficient:
- 21 818.18
- Temp.:
- 22 °C
- pH:
- ca. 7
Any other information on results incl. tables
Solubility of 1-((4-Methoxy-2-nitrophenyl)azo)-2-naphthol in n-octanol: 72 mg/l
Water solubility of 1-((4-Methoxy-2-nitrophenyl)azo)-2-naphthol: 3.3 µg/l
Pow = 21818.18
log Pow = 4.33
Applicant's summary and conclusion
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
