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Arsine is an inorganic compound with the formula AsH3. This flammable, pyrophoric, and highly toxic gas is one of the simplest compounds of arsenic. [1] Arsine has a garlic-like or fishy odour that can be detected at concentrations of 0.5 ppm and above. Because arsine is non-irritating and produces no immediate symptoms, persons exposed to hazardous levels may be unaware of its presence. Arsine is water soluble. [2] Arsine is formed when arsenic comes in contact with an acid. [3]
