Meta-arsenic acid is a chemical compound that belongs to the group of arsenic acids. It is formed from the oxidation of arsenic and is characterized by its unique structure, which includes arsenic in a higher oxidation state. This compound is less common than other arsenic acids, such as arsenic acid. In terms of its properties, meta-arsenic acid is typically a colorless, crystalline solid. It is soluble in water and can be used in various chemical reactions. Due to the toxicity of arsenic compounds, handling meta-arsenic acid requires caution to avoid health risks associated with arsenic exposure.