Wikipedia article at [[:ja:森永ヒ素ミルク中毒事件]]; see its history for attribution. You may also add the template {{Translated|ja|森永ヒ素ミルク中毒事件}} to the talk page....

the second syllable of arsenic. The kanji 砒 is quite rare. Often written ヒ素 using katakana. boron hōso (硼素, "borax element") 硼 (péng) Hō (ホウ) < hōsa (硼砂)...