亚砷酸 Traditional form: 亞砷酸 Pinyin (reading): yàshēnsuān Definitions: arsenous acid Characters: 亚 - Asia; second 砷 - arsenic 酸 - tart, sour; spoiled; acid Traditional characters: 亞 - Asia; second 砷 - arsenic 酸 - tart, sour; spoiled; acid