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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 202-425-9 | CAS number: 95-50-1
Endpoint summary
Administrative data
Description of key information
Additional information
1,2-dichlorobenzene is expected to predominantly partition to the atmospheric compartment due to its high volatility. There, the substance is photodegraded by reaction with photochemically produced OH radicals with a half-life of 38 days. Where released to either soil or water compartments, the substance volatilises into the surrounding atmosphere.
Degradation by hydrolysis under environment conditions is unlikey to occur due to the chemical structure of 1,2-dichlorobenzene. Where 1,2-dichlorobenzene becomes associated with soil or sediment, it can be expected to exhibit moderate mobility.
1,2-dichlorobenzene is not readily biodegradable. However, under aerobic conditions, the substance can be degraded by adapted microorganisms in water and soil. Under anaerobic conditions, biodegradation could not be proved unambiguously.
Degradation of 1,2 -dichlorobenzene in soil is slow with a DT50 at 12°C of 806 days. 1,2-dichlorbenzene has a low potential to bioaccumulate if BCF values in terms of whole organisms (fish and aquatic invertebrates) are considered (BCF in the order of magnitude of 260). The highest BCF in terms of lipid content was found in Blue crab to be 28840.
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.
