Registration Dossier

Environmental fate & pathways

Biodegradation in water: screening tests

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

No biodegradation in water was observed regarding naphthalene and acenaphthene as key components of wash oil.

Key value for chemical safety assessment

Biodegradation in water:
under test conditions no biodegradation observed

Additional information

Main components of wash oil are used as supporting substances to characterise the biodegradation properties of wash oil (see above under Chapter 4.)

In a ready biodegradability test (OECD 301C), published in Japan, naphthalene proved to be readily biodegradable, while 1- and 2 -methylnaphthalenes showed easy biodegradability in a MITI(II) -test, equivalent to TG OECD 302C (Yoshida et al. 1983).

On the other hand, in a MITI-II test for inherent biodegradability similar to OECD TG 302C performed under the Japanese Chemical Inspection & Testing Institute, no biodegradation of the test substance naphthalene was observed.

In a MITI-I test for ready biodegradability according to OECD TG 301C performed under the Japanese Chemical Inspection & Testing Institute, no biodegradation of the test substance acenaphthene was observed.