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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

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

  • 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.