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EC number: 231-743-0
CAS number: 7718-54-9
Relevant data for Bioaccumulation endpoints and
Adsorption/Desorption endpoints are available. Stability and
Biodegradation are not applicable endpoints for nickel, as reported in
the 2008/2009 European Union Risk Assessment for Nickel.
between Transformation/dissolution data and read-across approach
environmentally relevant conditions, nickel salts readily dissociate
upon dissolution in aqueous media. Dissociation is a reversible process
and the proportion of dissociated salt present is dependent on the pH
and composition of the solution and the metal-ligand dissociation
constant of the salt.Upon dissolution and dissociation, the
environmental fate and behavior the nickel ion and associated anion can
be measured or estimated within the environmental compartments (water,
air, sediment and soil). For metals and sparingly soluble metal
compounds, the transformation/dissolution protocol (T/DP, OECD 29) is
designed to determine the rate and extent to which metals and SSMCs can
produce soluble available ionic and other metal-bearing species in
aqueous media under a set of standard laboratory conditions
representative of those generally occurring in the environment. Once
determined, this information can be used to evaluate the short-term and
long-term aquatic toxicity of the metal or sparingly soluble metal
compound from which the soluble species came.
and ecotoxicological data for the nickel ion is therefore essential to
understanding the environmental fate and toxicological characteristics
of the nickel metal, compounds, and SSMCs. Data for the metal ions can
be represented by fate and toxicity data generated with simple metal
salts (e.g., chloride or nitrate salts). For example, the potential
hazards associated with nickel metal can be estimated by 1) measuring
the rate and extent of the release of nickel ions from nickel metal
using the T/DP test; and, 2) through the evaluation of the nickel free
ion tested using a soluble nickel compound (e.g., nickel chloride).
Thus, data for each individual nickel compounds or SSMC and the
individual metal can be used to “read-across” to characterize the hazard
of another nickel compound.
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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