Registration Dossier
Registration Dossier
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EC number: 305-795-0 | CAS number: 95009-65-7
Partition coefficient
Administrative data
Link to relevant study record(s)
Description of key information
The partition coefficients for members of the category Rosin adducts and rosin adduct salts range from 0.4 to 5.89
The partition coefficient of Rosin, maleated is 2.2 – 5.89 in unbuffered media and 1.5 - >6 at pH 2
The partition coefficient of Rosin, fumarated is 2.8 at pH 3.93 – 4.47. A supporting study determined a log Kow of 2.7 – 3.6 at pH 7.5 and 4.4 – 7 at pH 2, both measured at 35°C
The partition coefficient of Rosin, fumarated, reaction products with formaldehyde is 3.3 at pH 3.99 – 4.37
The partition coefficient of Fatty acids, tall oil, oligomeric reaction products with maleic anhydride and rosin, calcium magnesium zinc salts is 0.4 at pH 5.43
Key value for chemical safety assessment
Additional information
GLP-compliant, guideline studies (Chilworth Technology 2010) are available for Rosin, fumerated, Rosin, fumarated, reaction products with formaldehyde and Fatty acids, tall oil, oligomeric reaction products with maleic anhydride and rosin, calcium magnesium zinc salts. A GLP-compliant, guideline study (Inveresk 2000) is available for Rosin, maleated. An additional GLP-compliant, guideline study (Water Quality Institute 1992) is available for Rosin, fumarated. The range of results from all reliable, guideline studies is provided.
In addition, calculated values are provided for each of the substances (Marlin Consultancy 2010). Where test data are available this should be used instead of calculated data, therefore the tested values are considered as key for this category.
The wide range of partition coefficient values for substances in this category is due to the chemical structures of the substances, as they are composed of ionisable organic acids.The substances in this category are UVCB mixtures and therefore can exhibit more than one peak and log Kow value.
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.
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