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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 202-049-5 | CAS number: 91-20-3
Endpoint summary
Administrative data
Description of key information
Additional information
Naphthalene is easily biodegradable in water, sediment and soil under aerobic and denitrifying conditions, but generally biotic decomposition failed under anaerobic conditions. The apparently contradictory outcome of Japanese studies (not biodegradable versus readily biodegradable) indicate that standard testing may lack essential biological capacities that are common in nature. From the entirety of empirical and experimental data, the conclusion can be drawn that naphthalene has not any potential for persistence. Naphthalene is assumed to be rapidly biodegradable most of the time, at least inherently biodegradable under less favorable conditions with no tendency to accumulate in the environment. Furthermore, naphthalene is not bioaccumulating, based on BCF values reported in fish to range between about 40 and about 1200.
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.
