irritating gas

"What irritating gases have in common is that they have an irritating effect on human skin and mucous membranes. They can be divided into two categories according to their water solubility: one is highly water-soluble irritating gases, such as ammonia, chlorine, hydrogen chloride, sulfur dioxide, trioxide Sulfur, etc. The characteristics of its effect on the human body are: once it comes into contact with the moist conjunctiva and upper respiratory tract mucosa, local irritation symptoms will immediately appear, namely tearing, photophobia, conjunctival congestion, runny nose, sneezing, sore throat, and choking. etc. If a high concentration of gas is suddenly inhaled, it can cause laryngospasm, edema, trachea and bronchitis, and even pneumonia, pulmonary edema. Another type of small water-soluble irritating gases, such as nitrogen oxides, phosgene, etc. are harmful to Less irritating to upper respiratory tract

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