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Physical & Chemical properties

Oxidising properties

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Description of key information

Test waived: inorganic substance, absence of structural alerts (expert judgement, based on IUCLID 4.23: chemical and mineralogical composition of a representative UVCB)

Key value for chemical safety assessment

Oxidising properties:
no

Additional information

Copper residue, provided by Norilsk Nickel Harjavalta Oy, was characterized in detail. Based on chemical assays studied copper residue sample contains 55.3% copper, 1.3% nickel, and 20.1% sulfur and consists of mainly of covellite –type copper sulfide (64.4%), antlerite- brochantite –type copper sulfates (17.9%), iron sulfates (9.7%) and magnetite (5.1%).

Justification for classification or non-classification

See discussion above and all phys-chem data available (including thermogravimetric analysis performed on the material).