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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Link to relevant study record(s)

Reference
Endpoint:
oxidising solids
Type of information:
other: Expert assessment
Adequacy of study:
weight of evidence
Study period:
Expert assessment prepared March 2022
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Expert assessment based on chemical functionality present in substance
Principles of method if other than guideline:
Expert assessment - no guideline followed
GLP compliance:
no
Key result
Sample tested:
other: Expert assessment
Parameter:
other: Expert assessment
Remarks on result:
other: Expert assessment - the substance does not have oxidising potential based on an evaluation of the chemical functionality present within the substance
Interpretation of results:
GHS criteria not met
Conclusions:
It is concluded, based on the chemical functionality present within the substance, that amorphous carbon and silicon dioxide recovered from two-stage pyrolysis of spent tyres does not have oxidising potential and does not require classification as an oxidising agent.
Executive summary:

An evaluation of the functionality within the substance has been performed to identify the presence of elements
commonly associated with oxidising behaviour. Typical oxidising agents contain functional groups such as
halide-oxygen groups, nitrogen-oxygen groups and some metal-oxygen complexes. The raw materials used to
manufacture the substance do not contain any halogens or nitrogen and these elements are not present in the
final product. Oxygen and metals are contained within the substance Amorphous carbon and silicon dioxide
recovered from two-stage pyrolysis of spent tyres, however the majority of the substance is elemental carbon.
Any metals present are present mainly as their oxides, for instance silicon dioxide (~11% w/w of the mass
balance) and calcium oxide (~1% w/w of the mass balance), or as zinc sulphide. None of these substances are
known oxidising agents.


It is therefore concluded that Amorphous carbon and silicon dioxide recovered from two-stage pyrolysis of
spent tyres does not have oxidising potential and does not require classification as an oxidising agent.


 

Description of key information

It is concluded, based on the chemical functionality present within the substance, that amorphous carbon and silicon dioxide recovered from two-stage pyrolysis of spent tyres does not have oxidising potential and does not require classification as an oxidising agent.

Key value for chemical safety assessment

Oxidising properties:
non oxidising

Additional information

Justification for classification or non-classification

It is concluded, based on the chemical functionality present within the substance, that amorphous carbon and silicon dioxide recovered from two-stage pyrolysis of spent tyres does not have oxidising potential and does not require classification as an oxidising agent.