氧气的物化性质和危险特性--qsf999的安全生产小屋

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氧气的物化性质和危险特性 | 2011-12-15 21:10:00

氧气的物化性质和危险特性

　　2.2类不燃气体，CNNO.22001,UNNO.1072。
　　物化性质：常温下无色、无味的助燃气体。液态时凝结成淡兰色液体。相对密度1.33，熔点-218.4℃，沸点-183.0℃，临界温度-118.6℃，临界压力5.11×106pa，蒸气相对密度1.05，化学性能活泼，可与绝大多数元素生成氧化物。与可燃气体（如氢、乙炔、甲烷等）混合能形成爆炸性混合物，与氢气混合后燃烧火焰温度达到2100-2500℃，微溶于水。
　　危险特性：氧气钢瓶在日光下曝晒或在高温环境中存放，或搬运时摔甩，易使钢瓶中液化氧汽化膨胀，容易引起钢瓶爆裂。氧气本身不燃烧，但能助燃，与有机物或其他易氧化物质能形成爆炸性混合物，如与油脂接触则反应生热，此热蓄积到一定程度则可自燃。与氧气和乙炔等可燃气体混合能形成爆炸性混合气，液态氧和易燃物共储时，特别在高压下，有爆炸危险。液态氧易被衣物、木材、纸张等吸收，见火即燃。氧气无腐蚀性，但有水份存在时会促进金属的腐蚀。气体本身无毒，健康人吸入纯氧3小时，一般认为无任何影响，但吸入更长的时间或在202.65-303.98kpa（2-3atm）以上，持续吸入高浓度氧，则可出现“氧中毒症”。皮肤接触液氧时可引起严重冻伤，导致组织损伤。
　　辨识事故类型：火灾、爆炸、冻伤、氧中毒。

By:qsf999 | 阅读全文 | 回复(18) | 引用通告 | 编辑

Re:在漫画中识别身边的违章 | 2017-2-20 15:05:25

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Re:在漫画中识别身边的违章 | 2016-10-23 14:17:24

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Re:在漫画中识别身边的违章 | 2016-10-22 15:30:46

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Re:在漫画中识别身边的违章 | 2016-10-22 15:29:55

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Re:在漫画中识别身边的违章 | 2016-10-22 3:50:27

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Re:在漫画中识别身边的违章 | 2016-10-18 4:29:24

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Re:在漫画中识别身边的违章 | 2016-10-17 23:19:26

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By:sjmnr(游客) | 个人主页 | 引用 | 返回 | 删除 | 回复

原创 | 2016-9-30 15:56:27

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By:原创(游客) | 个人主页 | 引用 | 返回 | 删除 | 回复

原创 | 2016-9-28 21:13:27

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By:原创(游客) | 个人主页 | 引用 | 返回 | 删除 | 回复

原创 | 2016-9-6 21:39:09

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