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: 232-479-9 | CAS number: 8050-26-8
Partition coefficient
Administrative data
Link to relevant study record(s)
Description of key information
The log partition coefficients for the rosin ester substances range from 2.44 - >6.5.
The log partition coefficient of Resin acids and rosin acids esters with pentaerythritol is 3.62 at 20°C and pH 5.86.
Key value for chemical safety assessment
Additional information
A study following the EU method A.8 (shake-flask method) was used as the key study (Chilworth Technology, 2010). The following partition coefficient result was obtained: Log P = 3.62 at 20°C and pH 5.68.
An additional supporting study is available for Resin acids and rosin acids esters with pentaerythritol conducted according to OECD 117 HPLC method (Water Quality Institute, 1993). The supporting study for Resin acids and rosin acids esters with pentaerythritol showed a difference as a function of pH, with partition coefficients of two components above 6 at pH 2, and of one component at ca 3.6 at pH 7.5. As the esters are not considered to ionize, hydrolysis at low pH into the corresponding organic acid may be suspected.
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.
