Registration Dossier
Registration Dossier
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EC number: 265-997-9 | CAS number: 65996-66-9 The thermally agglomerated substance formed by heating a variable mixture of finely divided coke, iron ore, blast furnace dust, steelmaking dust, mill scale, other miscellaneous iron-bearing materials, limestone, and dolomite at 1315°C to 1482°C (2400°F to 2700°F).
Auto flammability
Administrative data
Link to relevant study record(s)
- Endpoint:
- relative self-ignition temperature (solids)
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- other:
Reference
Description of key information
Iron sinter is intrinsically not combustible and can safely be assumed not to be ignitable under the conditions given in EU-Method A.16. In conclusion, the conduct of further experimental verification is not considered to be required.
Key value for chemical safety assessment
Additional information
Self-ignition is not considered to be of relevance for this substance, since this would require heat to be developed either by reaction of this substance with oxygen or by exothermic decomposition, such heat not being lost rapidly enough to the surroundings. (cf. Guidance on Information Requirements and Chemical Safety Assessment Chapter R.7a: Endpoint specific guidance (July 2017) section R.7.1.12.2).
With the exception of the presence of iron (II) in tri-iron tetraoxide (Fe3O4) all of the metal ions in iron sinter are in their maximum oxidation state. Tri-iron tetraoxide occurs naturally as magnetite iron ore and is quite stable. In the production of iron sinter the product is cooled by forced draught cooling and any tendency towards auto-ignition would be observed during this process. Therefore, iron sinter is intrinsically not combustible and can safely be assumed not to be ignitable under the conditions given in EU-Method A.16. In conclusion, the conduct of further experimental verification is not considered to be required.
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