Industrial gas classification

Industrial gases can be divided into 4 categories according to their chemical properties: (1) Highly toxic gases, which are extremely toxic, and can cause poisoning or even death when invading the human body. Such as chlorine, ammonia, etc. ⑵ Flammable gas, with flammability, chemical explosion hazard, and certain toxicity. Such as hydrogen, acetylene, etc. (3) Combustion-supporting gas, which has the ability to support combustion, but does not burn by itself, and has the risk of expanding fire, such as oxygen. ⑷ Non-combustible gas, suffocating to humans, stable in nature, non-combustible, such as nitrogen, carbon dioxide and argon. In the national standard GB13690-1992, the above-mentioned 4 kinds of gases are divided into 3 sub-categories, namely the 2.1-type flammable gas, the 2.2-type non-combustible gas (including the combustion-supporting gas), and the 2.3-type toxic gas