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EC number: 215-231-4
CAS number: 1314-35-8
Reason: Study scientifically not necessary / other
Justification: In accordance with column 2 of REACH
Annex VII, the surface tension study does not need to be conducted as,
based on the inorganic nature and structure of tungsten trioxide, as
well as its lack of amphiphilic properties, surface activity is not
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