HARM REMOVING AGENT AND INSPECTION METHOD OF RAW MATERIAL

摘要

PROBLEM TO BE SOLVED: To obtain a harm removing agent high in harm removing ability and stable in performance. SOLUTION: A cupric hydroxide having >=40Å, preferably >=90Åcrystal particle diameter measured by the formula of the Scherrer, [D=(0.9.λ)/β.cosθ] (in the formula, D expresses crystal particle diameter [Å],λexpresses the wavelength [Å] of X-ray,βexpresses the half-width [rad] of diffraction ray andθexpresses diffraction angle), using the diffraction ray of the lattice plane (0, 2, 1) of cupric hydroxide from the X-ray diffraction of cupric hydroxide is mainly used.