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三氧化二砷危险特性 | 2011-11-15 11:31:00

三氧化二砷危险特性

    别名:三氧化砷,白砷,亚砒酸,亚砷酸酐,氧化亚砷,砒霜或白砒(不纯的)。分子式为:As203,分子量:197.84。
    用作农药、杀鼠剂、医药、染料、颜料、金属砷和砷化合物的原料。玻璃脱色剂、煤气的触媒剂、脱硫剂、锌选矿剂以及鱼网防腐剂。
三氧化二砷有非晶系、等轴晶系、单斜晶系的结晶或无色粉末三种状态。它们既容易被还原,也容易被氧化。
    1)非晶系(信石玻璃)。无色无定形的玻璃状物质,不稳定,能缓慢地变成轴晶系;相对密度3.738,溶于水。
    2)砷华。白色等轴八面晶系粉末,在常温下稳定,135℃时升华,221℃转变成单斜晶系。相对密度3.865(25℃)。折射率1.755。熔点275℃。沸点46.5℃。溶于水、盐酸、碱和醇(两性氧化物)。
    3)白砷石。无色属单斜晶系的针状结晶。在221℃以上温度不稳定。相对密度4.00。折射率2.01。熔点313℃。沸点465℃。溶于水、酸、醇。
    三氧化二砷危险特性:遇火灾会产生剧毒气体。对皮肤及黏膜有刺激。剧毒。误服即发生咽干、口渴、流涎、持续呕吐并混有血液、腹泻、粪便中混有血与粘液,并伴有剧烈头痛、四肢痉挛,抢救不及时则致心力衰弱或尿闭而死亡。一般认为成人三氧化二砷的致死量为70—180mg。接触其粉尘和烟雾出现“亚砷皮疹"或“砷皮疹”的接触性和过敏性和过敏性皮炎。还可见鼻炎、咽喉炎、支气管炎和结膜炎等。小鼠经口LD.~o:45mg/kg;小鼠皮下LD:11一13mg/kg;大鼠经口LO,~o:138mg/kg,6小时后死亡。
    三氧化二砷事故急救措施:1)消防方法:消防人员必须穿戴全身防护用品;用水、砂土灭火。2)急救:使误服或吸入的患者迅速脱离污染区,安置休息并保暖。皮肤接触先用水冲洗,再用肥皂彻底洗涤。误服立即催吐、洗胃,急送医院抢救。特效药二巯基丙醇(BAL)。
    储运须知包装标志:毒害品。包装方法:(II)类,玻璃瓶外木箱、木桶、铁桶内衬塑料袋。储运条件:储存于干燥、通风的仓间内;实行双人双锁管理制度,防止容器破损;不同与食用原料共储混运;工作人员必须穿戴防毒面具和全身防护用品;工作后及时漱口,清洗手、脸、更衣。
    泄漏处理:必须穿戴防毒面具与手套;用砂土混合,倒至空旷地方深埋;同时用l:50碱水或肥皂水洗刷污染区;用大量水冲洗,经稀释污水放入废水系统。

Re:在漫画中识别身边的违章 | 2017-2-18 15:18:56
ujoqt(游客)http://wen.28.com/article/153232
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By:ujoqt(游客) | 个人主页 | 引用 | 返回 | 删除 | 回复
Re:在漫画中识别身边的违章 | 2016-10-22 23:47:18
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By:fdswa(游客) | 个人主页 | 引用 | 返回 | 删除 | 回复
Re:在漫画中识别身边的违章 | 2016-10-21 12:40:16
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Re:在漫画中识别身边的违章 | 2016-10-21 7:29:25
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Re:在漫画中识别身边的违章 | 2016-10-19 3:11:58
gfvpt(游客)http://www.esafety.cn/blog/wll/85686/archives/2011/115158.html
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Re:在漫画中识别身边的违章 | 2016-10-18 2:29:19
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Re:在漫画中识别身边的违章 | 2016-10-18 1:09:33
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Re:在漫画中识别身边的违章 | 2016-10-17 3:45:47
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Re:在漫画中识别身边的违章 | 2016-10-15 21:13:41
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Re:在漫画中识别身边的违章 | 2016-10-14 17:43:54
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By:peimp(游客) | 个人主页 | 引用 | 返回 | 删除 | 回复
原创 | 2016-9-30 15:58:15
原创(游客)http://njryw168.lofter.com/post/1e6983e5_c7efe81 http://rywydx.lofter.com/post/1e6a68e3_c80dcca http://rywydx.lofter.com/post/1e6a68e3_c81536a http://rywkdks.lofter.com/post/1e698063_c7f9e51 http://rywydx.lofter.com/post/1e6a68e3_c80c9fa http://rywywj.lofter.com/post/1e6a80c3_c82179a http://rywywj.lofter.com/post/1e6a80c3_c82495c http://rywywj.lofter.com/post/1e6a80c3_c8231d4 http://rywydx.lofter.com/post/1e6a68e3_c8140a2 http://rywydx.lofter.com/post/1e6a68e3_c80cce0
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原创 | 2016-9-28 21:15:13
原创(游客)http://ywjseo.lofter.com/post/1e634752_c64f989 http://seogsywj.lofter.com/post/1e634756_c6de68e http://wztgywj.lofter.com/post/1e65f473_c6eea3f http://wztgywj.lofter.com/post/1e65f473_c6eeb22 http://ywjseo.lofter.com/post/1e634752_c650d84 http://wztgywj.lofter.com/post/1e65f473_c6eea6d http://seogsywj.lofter.com/post/1e634756_c6de8cf http://ywjseo.lofter.com/post/1e634752_c651029 http://ywjseo.lofter.com/post/1e634752_c652d19 http://ywjseo.lofter.com/post/1e634752_c64fcd6
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原创 | 2016-9-6 21:40:59
原创(游客)http://njryw2016.lofter.com/post/1e59a72f_c386aff http://njryw2016.lofter.com/post/1e59a72f_c386afe http://njryw2016.lofter.com/post/1e59a72f_c386afd http://njryw2016.lofter.com/post/1e59a72f_c386afc http://njryw2016.lofter.com/post/1e59a72f_c386afb http://njryw2016.lofter.com/post/1e59a72f_c386afa http://njryw2016.lofter.com/post/1e59a72f_c386af9 http://njryw2016.lofter.com/post/1e59a72f_c386af8 http://njryw2016.lofter.com/post/1e59a72f_c386af7 http://njryw2016.lofter.com/post/1e59a72f_c386af6
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