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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 231-157-5 | CAS number: 7440-47-3
Bioaccumulation: terrestrial
Administrative data
Link to relevant study record(s)
Description of key information
Several reports (WHO, 2009 ; EU RA on chromates (ECB, 2005) ; Voluntary Risk Assessment of Metallic Chromium and Trivalent Chromium Compounds (ICDA, 2010)) all demonstrate that:
- “Chromium in soil is present mainly as insoluble oxide and is not very mobile. Chromium (III) is expected to be rapidly and strongly adsorbed onto soil, particularly by iron and manganese oxides, clay minerals, and sand.
- “The sorption of chromium to soil depends primarily on the clay content of the soil and, to a lesser extent, on iron oxide and the organic content of soil.
- “Chromium that is irreversibly sorbed onto soil, will not be bioavailable to plants or animals under any conditions (Calder, 1988; Hassan & Garrison, 1996). Chromium (III) appears to be much more strongly adsorbed to soils than is chromium (VI) (Hassan & Garrison, 1996).” (WHO, 2009)
- “Chromium is largely immobile in plants: chromium is strongly bound to soil, mainly retains in plant roots and is not/poorly translocated to plant foliage. This mechanism limits the concentration of chromium in edible plants part and prevent the secondary poisoning mechanism.
If this unlikely behavior of chromium (III) to pass from the soil to plant upper part is largely describes in the literature and assessment reports, several supportive publications, all Klimisch 2 quoted are described here.
Authors demonstrated that the bioaccumululation of chromium (III) is mostly in roots in several species just like Mentha piperita (Razic and Dogo 2010 ; Dogo et al., 2010 ; Barouchas et al 2014) ; onion (Allium cepa cv. Hybrid ; Nematshahi et al 2012) ; Lippia citriodora (Barouchas et al 2014) at Cr (III) concentrations ranged from 0 to 200 mg/Kg soil and pH ranged from 5-7. The same conclusion has been hold on two wild plant species: Parthenium hysterophorus and Solanum nigrum (UdDin et al 2014)
Results show that most Cr(III) remained in the roots, with comparatively little transport to the upper portions of the plant.
Key value for chemical safety assessment
Additional information
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.
