PROBLEM TO BE SOLVED: To provide a water-soluble ultraviolet absorber having a low melting point and excellent in compatibility with various cosmetic bases, especially refined water, having absorption substantially over the entire range of UV-A and UV-B, excellent in light stability, and in which a compound itself is hardly decomposed and deteriorated over a long period of time.SOLUTION: A novel benzotriazole derivative compound is represented by general formula (I), where R1 is a hydrogen atom or a chlorine atom, R2 is a hydrogen atom or a methyl group, and n is an integer of 8 to 22.COPYRIGHT: (C)2014,JPO&INPIT【課題】低融点であって各種化粧基材、特に精製水との相溶性に優れ、UV-A、UV-Bのほぼ全領域において吸収をもち、かつ光安定性に優れ、化合物自体が長期にわたって分解、劣化し難い水溶性紫外線吸収剤の提供。【解決手段】下記一般式(I)で示される新規ベンゾトリアゾール誘導体化合物。(I)式中、R1は、水素原子または塩素原子を示す。R2は、水素原子またはメチル基を示す。nの数は、8から22の整数である。【選択図】なし
