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EC number: 231-143-9
CAS number: 7440-33-7
process of biodegradation is not a relevant fate pathway for inorganic
metal elements such as tungsten metal.
accordance with column 2 of REACH Annex VII, a test for ready
biodegradability does not need to be conducted, as the substance is
inorganic. Further biotic degradation testing is not necessary as long
as the Chemical Safety Assessment, conducted according to Annex I, does
not indicate that it is required. The process of biodegradation is not a
relevant fate pathway for inorganic metal elements such as this
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