Abstract
The high production volume (HPV)-compound, p-chloroaniline, was evaluated with respect to its ecotoxicological impact upon aquatic systems. This was accomplished by employing the applicable EU-guidelines for the risk assessment of new and existing substances and by using available data. Accordingly, a risk quotient was obtained by employing a PEC and a PNEC derived from available data. We do presume that, in general, this compound does not pose a serious risk for the aquatic environment. However, by accidental spill or under conditions unfavourable for biotic or abiotic decomposition, p-chloroaniline might pose a potential risk for sensitive aquatic species.