Registration Dossier
Registration Dossier
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Reaction mass of copper complex of [(2,6-difluoroheterocycl-4-yl)amino]hydroxy{[2-hydroxy-3-sulfonato-5-(vinylsulfonyl)phenyl]diazenyl}naphthalene sulfonic acid, dialkali salt and copper complex of [(2,6-difluoroheterocycl-4-yl)amino]-hydroxy{[2-hydroxy-3-sulfonato-5-{[2-(sulfonatooxy)ethyl]sulfonyl}phenyl]diazenyl}naphthalene sulfonic acid, trialkali salt
EC number: 479-550-2 | CAS number: -
Partition coefficient
Administrative data
Link to relevant study record(s)
Description of key information
A study was performed to determine the partition coefficient of the test substance according to EU method A.8 and OECD guideline 107 in compliance with GLP using the shake flask method. The log Pow for the two main constituents was determined to be -4.6 (component W) and -5.2 (component U); whereas the log Pow for the two isomers was -4.5 ( component X) and -5.2 (component V). In a worst-case approach the highest value of -4.5 is adopted as the key value for chemical safety assessment.
Key value for chemical safety assessment
- Log Kow (Log Pow):
- -4.5
- at the temperature of:
- 22 °C
Additional information
Under the test conditions, the log Pow and the Pow of the test substance at 22 °C for the individual components were as follows:
Main constituents:
- Component W: logPow= −4.6; Pow = 0.000027
- Component U: log Pow < −5.2; Pow < 0.000005
Isomers:
- Component X: logPow= −4.5; Pow = 0.000032
- Component V: log Pow < −5.2; Pow < 0.000005
Five replicates of each of the components in both water and octanol were taken. The difference of each value to the mean value for component U and V were smaller than 0.1 log Pow. For components W and X the differences of each value to the mean value for component W and X were greater than 0.3 log Pow which indicates poor replicability for those two components. Overall the Pow of each of the components ranged from −4.5 to < −5.2.
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