... ) 2 ·6H 2 O Molecular weight :297.47 zinc nitrate is white or colorless tetragonal crystal. relative density 2.065 , melting point 36 ... zinc nitrate Zn(NO 3 ) 2 ·6H 2 O, % ≥ 98-99 96-98 94-96 92-94 Free acid HNO 3 , % ≤ 0.001-0.025 0.002-0 ... catalyst , gelata, catalyst , metal finishing agent . Packing, transportation and storage :zinc nitrate plastic woven bag lined with high density PE bag, Net ...