PROBLEM TO BE SOLVED: To provide a spherical anatase-type titanium dioxide pigment, which has mild concealment and a satisfactory feeling derived from shapes and surface conditions, moderately absorbs sebum secreted from skin, and maintains adhesion to skin when it is used by being blended into a cosmetic, and to provide a method for producing the spherical anatase-type titanium dioxide pigment.SOLUTION: Titanyl sulfate is hydrolyzed under the temperature of ≥170°C and also under the pressure of the saturated vapor pressure or more at the temperature to obtain spherical water-containing titanium dioxide. Next, the spherical water-containing titanium dioxide is fired at the temperature of 600 to 800°C to obtain spherical anatase-type titanium dioxide. In the obtained spherical anatase-type titanium dioxide, the average particle diameter is 0.1 to 5 μm, the peak of the diameter of fine pores in a pore distribution measured by a nitrogen adsorption method is 5 to 50 nm, and further, pore volume lies in the range of 0.05 to 0.3 cm3/g.COPYRIGHT: (C)2013,JPO&INPIT【課題】化粧料に配合して用いると、形状及び表面状態に由来したマイルドな隠蔽性と良好な感触をもち、肌から分泌される皮脂を適度に吸収して肌への密着性が持続する球状アナタース型二酸化チタン顔料及びその製造方法を提供する。【解決手段】硫酸チタニルを170℃以上の温度下、かつ、該温度の飽和蒸気圧以上の圧力下で加水分解して球状含水二酸化チタンを得、次いで、該球状含水二酸化チタンを600~800℃の温度で焼成することにより、球状アナタース型二酸化チタンを得る。得られた球状アナタース型二酸化チタンは、平均粒子径が0.1~5μmであって、窒素吸着法で測定した細孔分布における細孔直径のピークが5~50nmにあり、しかも、細孔容積が0.05~0.3cm3/gの範囲である。【選択図】なし
