also: あひさん
arsenious acid; arsenous acid
Chemical term for H3AsO3; used in chemistry and toxicology contexts.
arsenic trioxide; white arsenic
Colloquial use for As2O3, often encountered in historical poisoning cases or traditional pesticides.
Arsenious acid is known as a highly toxic compound.
In the past, white arsenic was used as a rodenticide.
arsenite
arsenic trioxide; white arsenic
Common mixed-kana spelling; avoids the non-jōyō kanji 砒.
Full-kanji spelling using the non-jōyō kanji 砒; less common in modern texts.
Compound of 亜 (a, 'sub-') + 砒/ヒ (hi, 'arsenic') + 酸 (san, 'acid'). The kanji 砒 is non-jōyō, so the mixed-kana spelling 亜ヒ酸 is common.