硝酸
安全须知：H₂S
标签：安全, 硫化氢, 硝酸, 氨气, 防护
化学着色三类主要危害：①**硫化氢（H₂S）**——硫化物遇酸或受热释放，剧毒、高浓度麻痹嗅觉可致猝死；须强制通风、禁密闭、远离酸②**硝酸/硝酸盐**——强腐蚀，接触皮肤立即灼伤；须耐酸手套、护目镜、围裙，溅到立即大量清水冲③**氨气（NH₃）**——强刺激，高浓度损伤眼与呼吸道；开熏箱须上风、缓慢、远离面部，氨禁忌与漂白剂/强酸同存。通用：专用工作区、禁饮食、废液中和后按规排放、常备洗眼与应急通风。
Three main hazards: ①**Hydrogen sulfide (H₂S)** — released when sulfides meet acid or heat; toxic, high levels paralyze smell and can be fatal → forced ventilation, never enclosed, away from acid ②**Nitric acid/nitrates** — highly corrosive, burns skin on contact → acid-resistant gloves, goggles, apron; flush with water immediately ③**Ammonia (NH₃)** — strong irritant, damages eyes/airways at high levels → open the fuming chamber upwind, slowly, away from the face; never store ammonia with bleach or strong acids. General: dedicated workspace, no food/drink, neutralize waste before disposal, keep eyewash and emergency ventilation. ---