Hydrogen arsenide (chemical formula: AsH3) is the simplest arsenic compound and a colorless, highly toxic and combustible gas. It is a highly toxic molecular derivative of arsenic and hydrogen.
Hydrogen arsenide itself is tasteless, but when there is about 0.5ppm of hydrogen arsenide in the air, it can be oxidized by the air and produce a slightly garlic-like smell.
Arsenic is very stable at room temperature, and its decomposition rate into hydrogen and arsenic is very slow, but when the temperature is higher than 230°C, it decomposes quickly. In industrial production, arsenic-containing metal reacts with acid, and arsenic-containing ore contacts with humid air or hot slag poured with water, which can be melted and stored to generate hydrogen arsenide.
Extended data:
1, the use of hydrogen arsenide:
Can be used for synthesizing semiconductor materials related to microelectronics and solid-state lasers; In forensic medicine, it can be used to detect arsenic poisoning.
2, the harm of hydrogen arsenide:
(1) hydrogen arsenide is a strong reducing agent. Mixing with air will form an explosive mixture. Fire and high temperature can cause combustion and explosion.
(2) Hydrogen arsenide is toxic, and accidental inhalation of hydrogen arsenide gas will affect people's health. The prevention of hydrogen arsenide poisoning is mainly to strengthen protective facilities to prevent arsenic-containing slag from contacting humid air or pouring with water. If wet and smoking slag appears, the personnel present should be evacuated urgently.
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