Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.

Diss Factsheets

Administrative data

acute toxicity: oral
Type of information:
calculation (if not (Q)SAR)
Migrated phrase: estimated by calculation
Adequacy of study:
weight of evidence
2 (reliable with restrictions)

Data source

Reference Type:
other: Classification tool software

Materials and methods

Principles of method if other than guideline:
The UVCB substance as complex substance is classified by applying the rules for classification of mixtures (EU CLP guidance section 3.7.2 pg 322ff). The classification
criteria (as set out in EU CLP Guidance Annex I: 3.7.1 pg 322) can be used to estimate effects derived from that classification/hazard.
Test type:
other: calculation based on mixture toxicity rules

Test material

Constituent 1
Reference substance name:
Slimes and Sludges, zinc sulfate electrolytic
EC Number:
EC Name:
Slimes and Sludges, zinc sulfate electrolytic
Cas Number:
Molecular formula:
Not available, UVCB substance.
Product resulting from cleaning anodes and electrolyzing cells in an electrolytic zinc plant, with zinc sulfate. Consists primarily of manganese oxide, lead sulfate and calcium sulfate.

Results and discussion

Any other information on results incl. tables

The calculated classification via mixture rules resulted in "Acute toxicity (oral): category 4", triggered by lead compounds with total quantity > 0.3% for worst case.

Applicant's summary and conclusion

Interpretation of results:
Toxicity Category IV
Migrated information
Executive summary:

The tool provided a conclusive "Acute toxicity (oral) Cat4" of the UVCB sample, derived on basis of the mixture toxicity rules for a worst case across industry.