Registration Dossier
Registration Dossier
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EC number: 250-317-5 | CAS number: 30737-19-0
Adsorption / desorption
Administrative data
- Endpoint:
- adsorption / desorption: screening
- Data waiving:
- study technically not feasible
- Justification for data waiving:
- the study does not need to be conducted because the substance and its relevant degradation products decompose rapidly
- other:
- Justification for type of information:
- Oxalates form naturally in biological systems as a by-product of glycolysis and will ultimately mineralise. Oxalic acid is readily biodegradable. but testing on chromium oxalate indicates a slow rate of biodegradation. It is suspected that this low rate of biodegradation is due to the poor solubility of oxalate and chromium ions in the test media.
Calcium oxalate is soluble at less than 1 mg/l in water. The behaviour in soil will therefore be depending on the counter ions present. This cannot be predicted from laboratory screening studies.
Chromium(III) in soil is mostly present as insoluble carbonate and oxide of chromium(III); therefore, it will not be mobile in soil. The solubility of chromium(III) in soil and its mobility may increase due to the formation of soluble complexes with organic matter in soil, with a lower soil pH potentially facilitating complexation (Avudainayagam et al. 2003).
Chromium has a low mobility for translocation from roots to the aboveground parts of plants (Calder 1988; Cary 1982; EPA 1984a, 1985a; King 1988; Stackhouse and Benson 1989).
Data source
Materials and methods
Results and discussion
Applicant's summary and conclusion
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.
