HIGHLY PURE, HIGHLY ORIENTED MAGNESIUM HYDROXIDE POWDER AND METHOD FOR PRODUCING THE SAME

摘要

PROBLEM TO BE SOLVED: To obtain a highly pure and highly oriented magnesium hydroxide powder industrially producible, and preferably usable as a magnesium oxide raw material for an electronic material (especially for a thin film electronic material).;SOLUTION: The highly pure and highly oriented magnesium hydroxide powder comprises (by mass) ≤0.01% of a calcium compound in terms of calcium atom, ≤0.02% of a silicon compound in terms of silicon atom, ≤0.015% of an iron compound in terms of iron atom, ≤0.015% of an aluminum compound in terms of aluminum atom, and ≤0.005% of a zirconium compound in terms of zirconium atom, wherein the content of magnesium hydroxide is ≥99.5%, and the main part of the particles forms a plate-like primary particle.;COPYRIGHT: (C)2002,JPO