Registration Dossier
Registration Dossier
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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
- eye irritation/ eye damage: not classified
- skin corrosion/skin irritation: not classified
Key value for chemical safety assessment
Skin irritation / corrosion
Endpoint conclusion
- Endpoint conclusion:
- no adverse effect observed (not irritating)
Eye irritation
Endpoint conclusion
- Endpoint conclusion:
- no adverse effect observed (not irritating)
Respiratory irritation
Endpoint conclusion
- Endpoint conclusion:
- no adverse effect observed (not irritating)
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 of the substance (see IUCLID section 4.23 chemical and mineralogical characterization) excludes presence of irritating/corroding constituents such as strong acid or bases. Substance is most often massive solid at 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 is therefore only oral (ie inhalation excluded) for solidified matte. Inhalation route remains for molten material. For solidified but fine matte (with average particle size of ca 47.8µm), major route of exposure is inhalation during normal handling and use of the material.
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 (IUCLID 5.6) and gastric bio elution (IUCLID 7.1.1 and 7.1.2) furthermore confirmed speciations present and their low solubilisation behaviour.
Justification for classification or non-classification
-
See furthermore attached documents:
Please refer to IUCLID section 13 or CSR Annex I for detailed MeClas printouts with the specified input concentrations and resulting classification. Please visit www.meclas.eu for more information about the tool.
No classification. The classification derived is applicable to all Copper matte.
See end-records and above discussion for detailed justifications.
The tested sample is representative for Typical (and max) across industry, defined within the concentration ranges outlined under IUCLID section 1.2
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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