氨(NH_3)是无色、有特殊臭味、强烈的催泪性和刺激性气体。氨容易液化,并可大量溶于水形成氨水。低浓度氨对呼吸道粘膜有刺激作用,高浓度氨可造成人体组织溶解性坏死,急性吸入性氨中毒是由于一次吸入大量氨气造成的,轻者表现为眼和口有辛辣感、流泪流涕、声音嘶哑、头晕头痛;重者出现口、咽、鼻粘膜灼伤、糜烂、溃疡及气管、肺充血水 Ammonia (NH_3) is colorless, has a special smell, a strong tear and irritating gases. Ammonia easily liquefied, and a large number of dissolved in water to form ammonia. Low concentrations of ammonia on the respiratory mucosa have a stimulating effect, high concentrations of ammonia can cause human tissue dissolved necrosis, acute inhalation ammonia poisoning is due to a large amount of inhalation of ammonia caused by the light of the performance of the eyes and mouth with spicy sense of tears runny nose , Hoarseness, dizziness and headache; severe mouth, pharynx, nasal mucosal burns, erosion, ulcers and trachea, pulmonary congestion of water