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EC number: 231-717-9
CAS number: 7699-43-6
Zirconium dichoride oxide releases hydrogen chloride in contact with
water leading to a pH < 2. It is therefore proposed to follow the
classification of hydrogen chloride dissolved in water (hydrochloric
acid) on corrosion/irritation. Zirconium dichloride oxide should thus be
classified as Skin corrosive category 1B (H314) - GHS05, according to
Annex 6 of the CLP regulation for harmonised classification of
As the substance is classified as corrosive to the skin category 1B, it
should be classified as Eye damage category 1 according to the criteria
of the CLP Regulation.
In addition, the release of hydrogen chloride with moisture or heating
will provide a corrosive environment in and around the material.
Zirconium dichloride oxide is therefore concluded in daily handling and
use not to be compatible with metals and should thus be classified as
corrosive to metals, Met. Corr. 1 (H290).
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