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EC number: 231-131-3
CAS number: 7440-22-4
In accordance with section 1 of REACH Annex XI, the UN test N 4 for
self-heating substances and mixtures do not need to be conducted as
self-heating 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 and which is not
lost rapidly enough to the surroundings. Silver metal is thermally
stable under ambient conditions (melting point ca. 960°C, boiling point
ca. 2200°C). Silver metal (powder) has also been shown to be
non-flammable in direct contact with a flame (study according to method
EU A.10). Therefore, and supported by long-term industrial experience,
silver metal is considered to be intrinsically not combustible and can
safely be assumed not to be self-heating. Furthermore, testing with
other precious metals (Pd, Pt, Au) showed no signs of self-heating. In
conclusion, the conduct of further experimental verification is not
considered to be required.
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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