Registration Dossier
Registration Dossier
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 257-515-0 | CAS number: 51920-12-8
Partition coefficient
Administrative data
Link to relevant study record(s)
- Endpoint:
- partition coefficient
- Type of information:
- calculation (if not (Q)SAR)
- Remarks:
- estimated by calculation
- Adequacy of study:
- key study
- Study period:
- 2011
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Acceptable method for pigments with low solubilities.
- Principles of method if other than guideline:
- Calculation of log Pow from solubility in octanol (see section 4.9) and water (see section 4.8).
- Type of method:
- other: Calculation
- Partition coefficient type:
- octanol-water
- Analytical method:
- photometric method
- Type:
- Pow
- Partition coefficient:
- 6.35
- Temp.:
- 25 °C
- pH:
- ca. 7
- Type:
- log Pow
- Partition coefficient:
- 0.8
- Temp.:
- 25 °C
- pH:
- ca. 7
- Conclusions:
- The calculated log Pow of the test substance is 0.80.
- Executive summary:
The partition coefficient of the test substance was estimated by calculation from the measured solubilities in water (see section 4.8) and n-octanol (see section 4.9). The calculated log Pow of the test substance is 0.80.
Reference
The octanol and the water solubility were both determined at 25 -26 °C.
It is not possible to enter a temperature range in the field above, therefore 25 °C was taken as the temperature value.
Calculation:
log Kow = logP = log (c(n-octanol)/c(water))
(c: individual solubilities; see below).
|
PR185 |
Octanol solubility [µg/L] |
21.6 |
Water solubility [µg/L] |
3.4 |
POW |
6.35 |
log POW |
0.80 |
Description of key information
Key value for chemical safety assessment
- Log Kow (Log Pow):
- 0.8
- at the temperature of:
- 25 °C
Additional information
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.
