Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
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: 206-793-1 | CAS number: 375-73-5
Partition coefficient
Administrative data
Link to relevant study record(s)
- Endpoint:
- partition coefficient
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2018
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- EU Method A.8 (Partition Coefficient - Shake Flask Method)
- Deviations:
- yes
- Remarks:
- one sample per concentration only; octanol:water no variation in volumes tested. Analytics is not substance specific (only titration of acid). Report does not conform with guideline.
- GLP compliance:
- no
- Type of method:
- flask method
- Partition coefficient type:
- octanol-water
- Analytical method:
- titration method
- Type:
- Pow
- Partition coefficient:
- 3
- Temp.:
- 23 °C
- pH:
- > 0 - < 0.5
- Remarks on result:
- other: starting concentration between 0.5 and 1 mol/L
- Key result
- Type:
- Pow
- Partition coefficient:
- 0.46
- Temp.:
- 23 °C
- pH:
- 1.7
- Remarks on result:
- other: concentration of aqueous phase before shaking = 0.01 mol/L
- Conclusions:
- The log Kow of PFBS was dermined with shake flask method to be -0.34 at 23°C and pH of 1.7
Reference
Konzentration |
Verteilungskoeffizent |
||
Stammlösung |
organische Phase |
wässrige Phase |
|
mol/l |
mol/l |
mol/l |
Kow |
0,987 |
0,676 |
0,2245 |
3,01 |
0,50 |
0,330 |
0,110 |
3,00 |
0,749 |
0,480 |
0,160 |
3,00 |
|
|
Æ |
3,0 |
Description of key information
The logKow of PFBS was determined as -0.34 in a 0.01 mol/L concentration (pH 1.7) at 23°C.
Key value for chemical safety assessment
- Log Kow (Log Pow):
- -0.34
- at the temperature of:
- 23 °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.
