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Diss Factsheets

Administrative data

Endpoint:
chronic toxicity: inhalation
Remarks:
other: predicted from hazard class
Type of information:
calculation (if not (Q)SAR)
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Automatic calculation with MeClas tool
Cross-reference
Reason / purpose for cross-reference:
reference to same study

Data source

Reference
Reference Type:
other: software
Title:
Unnamed
Year:
2020

Materials and methods

Principles of method if other than guideline:
Repeated dose toxicity potential of the UVCB was determined by classifying based on Mixture rules from EU CLP (additivity formula of classified components to derive hazard class). The classification criteria were used to estimate effects.

Test material

impurity 1
Reference substance name:
Total unspecified impurities
IUPAC Name:
Total unspecified impurities
Constituent 1
Reference substance name:
Cobalt Nickel Manganese Oxide
Cas Number:
37348-84-8
Molecular formula:
Ni1-x-yMnxCoyOz with Me=Ni+Mn+Co=1 and Ni/Me= 0.45-0.98 Mn/Me= 0.01-0.35 Co/Me= 0.01-0.35 O/Me= 1.00-1.33
IUPAC Name:
Cobalt Nickel Manganese Oxide
Test material form:
solid

Results and discussion

Effect levels

Dose descriptor:
other: target organ toxicity
Basis for effect level:
other: at least one component has reliable and good quality evidence from human cases or epidemiological studies or animal studies with significant and/or severe toxic effects at low exposure concentrations
Remarks on result:
not measured/tested
Remarks:
Effect level not specified (migrated information)

Target system / organ toxicity

Critical effects observed:
not specified

Any other information on results incl. tables

According to MeClas, the substance is classified as STOT-RE Cat. 1 - H372.

Applicant's summary and conclusion

Conclusions:
Good quality study with result derived on basis of the Classification outcome (Mixture toxicity rules) from the reasonable worst case composition for a pNMC oxide-sample. The analysed generic pNMC oxide composition is classified for STOT-RE Cat. 1.
Executive summary:

The study provided a conservative estimate, derived on basis of the classification outcome (mixture toxicity rules) from a reasonable worst-case sample of the substance using mineralogical information from the representative sample. 

 

Validity of the model used:

1. Defined endpoint: the endpoint is a REACH compliant defined endpoint

2. Unambiguous algorithm: EU CLP guidance based summation formula to determine classification, followed by back-calculation to related hazard criteria

3. Applicability domain: applicable to classify complex metal containing materials. 

4. Mechanistic interpretation - metal species: the tool translates the elemental composition into a mineralogical composition relevant for classification.