Iron sulfide is a toxic chemical that easily oxidizes in air to produce harmful gases such as sulfur dioxide. It can also react dangerously with other chemicals. Therefore, iron sulfide should avoid contact with the following chemicals:
1. Acids: When iron sulfide comes into contact with acids such as hydrochloric acid, nitric acid, and acetic acid, it produces toxic gases that can easily cause explosions and fires.
2. Oxidizing agents: When iron sulfide comes into contact with oxidizing agents (such as potassium permanganate and hydrogen peroxide), it reacts violently, releasing large amounts of heat and toxic gases.
3. Non-metallic elements: When iron sulfide comes into contact with non-metallic elements (such as chlorine, bromine, and iodine), it also produces toxic gases, which are harmful to both humans and the environment.
4. High temperatures: Iron sulfide decomposes easily at high temperatures, releasing toxic gases and potentially causing explosions and other adverse consequences.