Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 292-605-3 | CAS number: 90640-84-9 A complex combination of hydrocarbons produced by the distillation of coal tar and boiling in the range of approximately 240°C to 280°C (464°F to 536°F). Composed primarily of acenaphthene, naphthalene and alkyl naphthalene.
Biodegradation in water: screening tests
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.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
