硫化氢是一种无色有臭蛋样气味的剧毒气体。它比空气重(比重为1.191),可溶于水、乙醇、甘油等。其化学性质活泼,可与碱作用生成硫化碱;在空气中易燃烧,火焰呈兰色;空气中爆炸界限4.3～45.5%;对金属具有腐蚀性,对钢材有强烈氢脆作用。硫化氢在生产和生活中是会经常遇到的,如天然 Hydrogen sulfide is a highly toxic gas with a colorless, stinky egg-like odor. It is heavier than air (weight 1.191), soluble in water, ethanol, glycerol and so on. Its chemical properties are lively and can produce alkali sulfide with alkali. It is flammable in the air with a blue flame. The limit of explosion in air is 4.3-45.5%. It is corrosive to metals and has a strong hydrogen embrittlement effect on steel. Hydrogen sulfide is often encountered in the production and life, such as natural