Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

P-PP does not biodegrade. The results of the ready biodegradability test, determined by three different measures were:

 - Degradation by BOD: 0%, 0%, 0%

 - Degradation by TOC method: 2%, 2%, 5%

 - Degradation by HPLC method: 12%, 14%, 18%

REACH Annex IX Section 9.2 States that further biodegradation testing shall be proposed if the chemical safety assessment according to Annex I indicates the need to investigate further the degradation of the substance andits degradation product. P-PP does not biodegrade and does not have groups that are hydrolysable. In addition, P-PP is imported into the EU and used at a limited number of sites where it is added to and reacts with resins. After the reaction, P-PP no longer exists. Water is not used in the process nor is it used for cleaning. Direct emissions to water are therefore very unlikely and good practice industrial hygiene will minimise indirect exposure. Therefore, further testing to determine ultimate degradation is not justified.