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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 266-967-8 | CAS number: 67711-91-5 Product of smelting roaster calcines concentrates or cement copper with flux in reverberatory or electric furnaces. Composed primarily of copper and copper, iron and lead sulfides with minor sulfides of other metals.
Endpoint summary
Administrative data
Description of key information
- complex metal containing substance. - water solubility of the substance is poor (for metal constituents) - oral and dermal bio-accessibility - particle size distribution and potential for inhalation toxicity of molten liquid, solid massive and/or solid powder - classification based on mixture toxicity rules
Key value for chemical safety assessment
Additional information
Results from calculated classification (using mixture toxicity rules) are supported (WoE) by additional consideration from physico- chemical properties of the UVCB substance.
Chemistry and mineralogy of the material (see IUCLID section 4.23 chemical and mineralogical characterization) were taken into account.
Substance is a massive solid at Room Temperature RT (see picture in IUCLID section 1.4 "sampling protocol") which particle size distribution (IUCLID section 4.5) for a WC sample (ie samples crushed and grinded prior to testing) showed D50 > or equal 832µm, with particles <20µm less than 4% (WC). Routes for exposure to consider are therefore oral for massive material (and inhalation for molten material), and oral and inhalation in case of solid powders. Water solubility (IUCLID section 4.8) furthermore demonstrated that substance is poorly soluble in water, except at high loading and after long period for Cu, S, Si, Zn, K, and Na. The pH of the test solutions ranged for all representative samples between 5.8 and 9.7 (ie no extreme pH <2 or >11.5).
Water solubility (IUCLID section 4.8) and Sequential dissolutions (IUCLID 4.23 Chemical assays) as well as Transformation/Dissolution and bio-elution tests (IUCLID 5.6) furthermore confirmed species present and their solubility behaviour. The Meclas tool was used to automatically calculate the classification of the intermediate. The tool is based on a database containing the human and environmental classification for each component relevant for classification. The information on the representative mineralogical composition (distribution pattern for each constituent of the UVCB substance) and oral/dermal bio-accessability is furthermore incorporated into the tool, so that the elemental composition (in % Total element) is automatically converted into % w/w of bio-accessible compounds that are relevant for applying the mixture rules
Justification for classification or non-classification
Acute toxic: not classified (Grade 1 and 2)
The classification derived is applicable to all Copper Matte.
See end-point record and discussion above for detailed justifications.
The tested samples were representative for the typical across industry, defined within the elemental concentration ranges (maximum of the typical) outlined under IUCLID section 1.2 for Grades 1, and Grade 2, respectively.
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.
