Registration Dossier
Registration Dossier
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EC number: 434-280-4 | CAS number: -
Endpoint summary
Administrative data
Description of key information
Additional information
Due to the diversity of functional groups present in the components of interest, they could be assigned into a number of chemical classes. In these cases the adsorption coefficient was calculated for each applicable chemical class and the definitive result taken as the range of values obtained.
The QSAR technical guidance document cautioned that a systematic underestimation of the adsorption coefficient of alkyl amines was observed when validating the nonhydrophobic chemical class equation. Therefore to present a worst case scenario figure for regulatory use, the calculated value has been corrected for the anticipated discrepancy of up to 2 log units.
Conclusion
Using QSAR calculations, the adsorption coefficient of the four components of interest having been estimated. The results are shown below:
Component |
Estimated log10 Koc |
Phosphoric acid mono-ester |
0.81 to 1.57 |
Phosphoric acid diester |
1.73 to 2.32 |
Phosphorodithiotic acid ester |
>2.78 |
Alkyl amine |
5.21 |
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