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EC number: 231-176-9
CAS number: 7440-67-7
As no toxic effect has been observed in all the tests performed on
Zirconium compounds, only unbound PNEC value could be derived. There are
clearly overestimating the hazard that may present Zirconium substance
to aquatic, benthic or terrestrial organisms. However, for the purpose
of REACH and Chemical Safety Assessment, they will be considered in this
dossier as conservative PNEC.
For Zr metal, no Acute 1/Chronic 1, 2, 3 classification category under
CLP is proposed as no acute toxicity was observed to aquatic organisms
at loading rate. Even if for fish, the loading rate was 74 mgZr/L
(unbound NOEC>= 74 mgZr/L) no effect is expected at 100 mgZr/L as for
algae and invertebrates (loading rates > 100 mgZr/L).
Furthermore, as Zr is insoluble in water, no chronic toxicity is
expected for aquatic organisms as the substance will not be bioavailable.
Therefore, there is no need for an environmental classification of Zr
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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