... applies to battery material,catalysts, ceramics,electric plating. Black Nickel OxideFormula :Ni2O3Status:Black powder,insoluble in water ,soluble in vitriol and nitric ... battery material,catalysts, ceramics,electric plating.Packing:25/50kgs iron drum.Quality indexContentsIndex Ni2O3Ni,% ≥70.0~75.0Insol.in.Hcl,% ≤0 ...