Registration Dossier

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:
reference to same study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2010
Report Date:
2010

Materials and methods

Test guideline
Qualifier:
equivalent or similar to
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
Name:
Unnamed
Type:
Constituent
Test material form:
solid

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