Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

The UVCB test material has a low vapour pressure (2.8 x 10E-02 Pa at 25 °C), is poorly soluble (7.55 x 10E-02 g/L at 20.0 ± 0.5 °C) and the behaviour of the most abundant component has been modelled to provide an indication of the behaviour of the test item as a whole. The calculated Henry's Law Constant of 0.0000144 Pa.m3/moL Pa.m3/moL for 2-dodec-1-en-1-ylsuccinic acid indicates that this constituent is unlikely to partition to air. The Level III Fugacity Model confirms that volatilisation to air is of no concern for the major component of the UVCB substance and that approximately 79 % of that constituent will partition to soil. The determined Log Koc values for the UVCB itself are pH dependent with a lower percentage of highly retained components in neutral conditions and correspondingly a higher percentage of slightly retained components. This behaviour is confirmed by the predicted Log Koc for the most abundant component of the UVCB, which is predicted to lie between 2.84 and 3.97.