Registration Dossier
Registration Dossier
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EC number: 224-152-4 | CAS number: 4216-02-8
Partition coefficient
Administrative data
Link to relevant study record(s)
- 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 the method of the Analytical Expert Group ETAD; method similar to Annex V, A.8, 1.6.1, Directive 67/548/EEC
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- other: ETAD Analytical Expert Group
- Version / remarks:
- method for substances with very low solubility 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
- Analytical method:
- photometric method
- Key result
- Type:
- log Pow
- Partition coefficient:
- -0.24
- Temp.:
- 24 °C
- pH:
- 6.3
- Type:
- Pow
- Partition coefficient:
- 0.57
- Temp.:
- 24 °C
- pH:
- 6.3
Reference
Solubility of C.I. Pigment Red 194 in n-octanol: 0.55 mg/L
Water solubility of C.I. Pigment Red 194 : 0.96 mg/L
Description of key information
Key value for chemical safety assessment
- Log Kow (Log Pow):
- -0.24
- at the temperature of:
- 24 °C
Additional information
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