Registration Dossier
Registration Dossier
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EC number: 234-576-1 | CAS number: 12012-35-0
Biodegradation in soil
Administrative data
Link to relevant study record(s)
Description of key information
Substance is not biodegradable.
Key value for chemical safety assessment
Additional information
Waiving of the need for data for this environmental end point is considered relevant because “The substance is highly insoluble in water” (ECHA 2008, Chapter R 7B – Endpoint Specific Guidance). The dissolution of the trichromium dicarbide is so low that its contribution to the environmental background level is negligible.
The water solubility of trichromium dicarbide is <0.5 mg/L (OECD 105 test, 72 h, quantification limit (H.C. Starck GmbH 2012)).The solubility of chromium from chromium oxide in chronic T/D test is<0.01microg/L(Hedberg and Odnevall Wallinder 2012), and from the reaction mass of heptachromium tricarbide and trichromium dicarbide (acute T/D test) <1 microg/L (quantification limit)(Jiang et al. 2011).
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.
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