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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 200-431-6 | CAS number: 59-50-7
Endpoint summary
Administrative data
Description of key information
Additional information
Hydrolysis:
The hydrolysis of chlorocresol was estimated to be 0.0000000000256787 cm3/molecule - seconds. The estimated half life of the substance indicates that the substance is non persistent in nature as the OH rate constant is negligible and so the substance is biodegradable.
Biodegradation in water: screening tests:
According to the PBT profiler model, Chlorocresol degrades 50% in water in 38 days, suggesting that it is readily biodegradable in water and it will not be persistent in the aquatic environment
Media |
Half-Life |
Percent in |
water
|
38 |
19% |
Biodegradation in water and sediment: simulation tests:
Chlorocresol degrades 50% in water in 37.5 days, suggesting that it is readily biodegradable in water. However, in the sediment Chlorocresol has a long half life of 337.5 days. Thus it can be concluded that Chlorocresol will be persistent in the sediment given its long half life of 337.5 days.
Media |
Half-Life |
Percent in |
Water |
37.5 |
19.1% |
Sediment |
337.5 |
0.519% |
Biodegradation in soil:
Half-life of chlorocresol in soil was estimated to be 1800 hours i.e. 75 days .Thus is can be concluded that chlorocresol is persistent in soil given the half life of 75 days which is slightly greater than the threshold of 60 days (half life) indicating ready bio-degradability and low persistence in soil
Media |
Half-Life |
Percent in |
Soil
|
75 |
80% |
Bioaccumulation: aquatic / sediment:
BCF values of 5.5 to 11 and 6.7 to 13 were measured using initialChlorocresolconcentrations of 2 ug/l and 20 ug/l, respectively. Tests were conducted in a continuous flow system with six weeks exposure using carp having an average lipid content of 4.9 percent. According to a classification scheme, these BCF ranges suggest the potential for Bioconcentration in aquatic organisms is low (SRC). For the purpose of chemical safety assessment and dossier preparation, Bioconcentration factor of 11 has been considered.
Adsorption / desorption:
The Koc of chlorocresol was found to be 490. According to a classification scheme, this Koc value suggests that chlorocresol is expected to have moderate mobility in soil. In addition, this chemical was found to be mobile in an activated carbon-sand filter system; this was considered to be indicative of a low adsorption potential in soil systems.
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.
