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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 940-875-4 | CAS number: -
Partition coefficient
Administrative data
Link to relevant study record(s)
Description of key information
The partition coefficient was estimated by fragment constant methodolgy using KOWWIN v 1.67. Using the software the test material has been predicted to have a minimum Log Pow of 7.5, this being the monomer of the polymer. With a molecular weight of approximately 1433 the Log Pow was estimated to be 16.06. Since Log Pow greater than 8 are considered to be scientifically unreliable, it was considered that a value of >8 was the most realistic value of partition coefficient.
Key value for chemical safety assessment
- Log Kow (Log Pow):
- 8
- at the temperature of:
- 20 °C
Additional information
No determination of the partition coefficient by OECD Guideline Method 107 or 117 was possible. The test material exhibited the properties of a surfactant in the octanol water system, thus preventing the determination by the shake-flask method. Estimation by the HPLC method was not possible in the absence of suitable calibration standards and since ionic compounds interact with HPLC columns by forces other than partitioning, such as interaction with free silanols present on the stationary phase. The ratio of the solubility in n-octanol to its solubility in water was not a valid estimation method either due to the self-aggregation properties of surfactants. Finally the test material has a chemical structure that resembles a surfactant, i.e. a polar head with a long carbon chain and approximately 25% unreacted glycerol and polyglycerol, both of which would cause emulsification. Therefore, the partition coefficient was estimated by fragment constant methodology using KOWWIN v 1.67. Using the software the test material has been predicted to have a minimum Log Pow of 7.5, this being the monomer of the polymer. With a molecular weight of approximately 1433 the Log Pow was estimated to be 16.06. Since Log Pow greater than 8 are considered to be scientifically unreliable, it was considered that a value of >8 was the most realistic value of partition coefficient.
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.
