dimethylarsanyl(dimethyl)arsane

Cacodyl, dicacodyl, tetramethyldiarsine, alkarsine or minor part of the \"Cadet's fuming liquid\" (after the French chemist Louis Claude Cadet de Gassicourt) (CH3)2As—As(CH3)2 is a poisonous oily liquid with a garlicky odor. Cacodyl undergoes spontaneous combustion in dry air.