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Toxicological information


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Description of key information

Complex substance containing metals.
The classification is based on assessment of the components, treating it as a mixture.
Considered to be a potential carcinogen.

Key value for chemical safety assessment

Justification for classification or non-classification

Analysis of the classification results of all studied Slimes and sludges battery scrap Sb Pb rich samples resulted in a division in two grades.


The first grade is a “catch all” grade, which covers all Slimes and sludges battery scrap Sb Pb rich samples. More specifically, the analyzed sample is representative for the reasonable worst case sample of the substance (i.e. maximum of typicals for every constituent across all industry data, defined within the concentration ranges outlined under IUCLID section 1.2. + mineralogical information in section 4.23).

The second grade is related to a less severe classification for carcinogenicity.

The derived classification result for the first grade is "Carcinogenicity Category 1B; H350" and for the second grade "Carcinogenicity Category 2; H351".

Self-classification of the UVCB substance (IUCLID Section 2.1 & 2.2) was performed based on below outline:

1. Characterization

The material is accurately described from its elemental composition (maximum of typical concentrations and concentration ranges across industry –IUCLID Section 1.2) and the specific speciation data (mineralogical information) obtained from one or more representative sample(s) (IUCLID Section 4.23). This information is enough to initiate the classification process.

2. Classification by the Mixture Approach

The UVCB is treated as a complex metal containing substance with a number of discrete constituting compounds (metals, metal compounds, non-metal inorganic compounds). The hazard classifications of each compound is then factored into a combined classification of the UVCB as a whole (application CLP mixture rules). For health endpoints, UVCB classifications are based on the combined hazards of the compounds whereby additivity or key cut off levels, specified in look-up tables are used, depending on the endpoint and amount of information available for the constituting compounds. For environmental endpoints, additivity and/or summation algorithms are applied to quantitatively estimate the mixture’s toxicity to aquatic organisms. These concepts and rules are incorporated in easy to use IT tools (e.g. ARCHE CLP tool), which can be used to classify the UVCB.

3. Bridging or Read-Across

(Eco)-toxicological data are not available for the specific UVCB being evaluated. Considering the knowledge and variability in composition, read-across and bridging is done by using a "representative mineralogical/speciation analysis" (chemical and mineralogical surrogates with similar origin/production process and physical/chemical properties combined with the maximum concentration of the typicals across industry as a basis.

4. Eventual correction

No correction for (bio)availability was made.

Additional information

Results from calculated classification (using mixture toxicity rules) are supported (WoE) by additional consideration from phys chem properties of the UVCB substance.

Chemistry and mineralogy of the material (see IUCLID section 4.23) were taken into account. Water solubility (IUCLID section 4.8) furthermore confirmed species present and their solubility behaviour.