sentence: Arsenic trioxide is a white solid.
sentences_before: Arsine is a colorless, highly toxic gas with a garlic odor. They are weak oxidizing agents.
sentences_after: It dissolves in water to make a solution of arsenious acid. The arsenic trichlorides are low melting covalent solids. They are strong oxidizing agents. Arsenic pentafluoride, a colorless and highly reactive gas, is the only stable arsenic pentahalide. Arsenic pentoxide dissolves in water to make arsenic acid, which can make arsenate salts.
concept_name: arsenic trioxide
headings: Arsenic Properties Chemical compounds
categories: Semimetals Chemical elements