A colorless, flammable, very poisonous gas, H3As, having an odor like garlic and used in chemical warfare, as a solid-state doping agent, and in organic synthesis.

• 砷化三氢一种无色可燃，毒性大的气体，H3As，有种类似大蒜的气味，用在化学武器中，用作固体添加剂，和用于有机合成