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2",{"key":379,"value":380},"WGK德国","1",{"key":382,"value":383},"RTECS号","PA8750000",{"key":385,"value":386},"包装等级","II",{"key":388,"value":389},"危险类别","3",{"key":337,"value":338},"\u003Ctd>\n\n\u003Cp>\u003Cstrong>甲缩醛毒理学数据:\u003C\u002Fstrong>\u003C\u002Fp>\n\u003Cp>\u003C\u002Fp>\u003Cp>1、急性毒性： \u003C\u002Fp>\n\u003Cp>大鼠经口LD50：6653mg\u002Fkg；兔子经口LD50：5708mg\u002Fkg；小鼠经皮LC50：57000mg\u002Fm3\u002F7H；兔经皮LD50：>16ml\u002Fkg；大鼠吸入LC50：15000ppm；\u003C\u002Fp>\n\u003Cp>2、甲缩醛能引起肝、肾障碍，高浓度有麻醉性。对黏膜有明显刺激。工作场所最高容许浓度为3100mg\u002Fm3。对大鼠的致死浓度(空气中)为46650mg\u002Fm3。\u003C\u002Fp>\n\u003Cp>3.急性毒性\u003C\u002Fp>\n\u003Cp>LD50：5708mg\u002Fkg（兔经口）\u003C\u002Fp>\n\u003Cp>LC50：46650mg\u002Fm\u003Csup>3\u003C\u002Fsup>（大鼠吸入）\u003C\u002Fp>\n\u003Cp>4.刺激性 家兔经眼：100μl，中度刺激。\u003C\u002Fp>\n\u003Cp>5.亚急性与慢性毒性 小鼠吸入58g\u002Fm\u003Csup>3\u003C\u002Fsup>，每天7h，2次后80%死亡；吸入35g\u002Fm\u003Csup>3\u003C\u002Fsup>时，每天7h，在22d内染毒15次，50只小鼠中死亡6只。尸检见支气管肺炎、肺水肿，心肌、肾和肝脂肪变性。\u003C\u002Fp>\n\u003Cp>\u003C\u002Fp>\n\u003Cp>\u003Cstrong>甲缩醛生态学数据:\u003C\u002Fstrong>\u003C\u002Fp>\n\u003Cp>\u003C\u002Fp>\u003Cp>1.生态毒性 暂无资料\u003C\u002Fp>\n\u003Cp>2.生物降解性 暂无资料\u003C\u002Fp>\n\u003Cp>3.非生物降解性 空气中，当羟基自由基浓度为5.00×10\u003Csup>5\u003C\u002Fsup>个\u002Fcm\u003Csup>3\u003C\u002Fsup>时，降解半衰期为2.3d（理论）。\u003C\u002Fp>\n\u003Cp>\u003C\u002Fp>\n\u003Cp>\u003Ca href=\"\u002Fen\u002Fcas\u002F109-87-5_1098882.html#duXinDiv\">甲缩醛毒性英文版\u003C\u002Fa>\u003C\u002Fp>\n\n\u003C\u002Ftd>","\u003Cp>1.在浓硫酸催化下，甲醇和甲醛在合成塔中反应。生成的甲缩醛从塔丁馏出，塔丁温度控制在41.5-42℃，从产物中分离未反应的甲醇供循环使用，得含量为85%以上的甲缩醛。每吨产品消耗甲醇1100kg，37%的甲醛1300kg。产品甲缩醛中的杂质主要是甲醇和甲醛，当要求较高纯度时，可用碱性过氧化氢氧化除去甲醛，加金属钠蒸馏可除去甲醇。\u003C\u002Fp>\u003Cp>精制方法：主要杂质为甲醇和甲醛。少量甲醛可用碱性过氧化氢氧化除去。甲醇用金属钠蒸馏除去。精制时在甲醛除去后用水洗涤，无水碳酸钾或氯化钙干燥，过滤，加金属钠蒸馏。\u003C\u002Fp>\u003Cp>\u003C\u002Fp>","\u003Ctd>\n\n\u003Ctable>\n\u003Ctbody>\n\u003Ctr>\n\u003Ctd>\u003Cstrong> 国标编号: \u003C\u002Fstrong>\u003C\u002Ftd>\n\u003Ctd> 31031 \u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>\u003Cstrong> ＣＡＳ: \u003C\u002Fstrong>\u003C\u002Ftd>\n\u003Ctd> 109-87-5 \u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>\u003Cstrong> 中文名称: \u003C\u002Fstrong>\u003C\u002Ftd>\n\u003Ctd> 二甲氧基甲烷 \u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>\u003Cstrong> 英文名称: \u003C\u002Fstrong>\u003C\u002Ftd>\n\u003Ctd> dimethoxymethane；Methylal \u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>\u003Cstrong> 别 名: \u003C\u002Fstrong>\u003C\u002Ftd>\n\u003Ctd> 甲撑二甲醚；二甲醇缩甲醛；甲缩醛 \u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>\u003Cstrong> 分子式: \u003C\u002Fstrong>\u003C\u002Ftd>\n\u003Ctd> C\u003Csub>3\u003C\u002Fsub>H\u003Csub>8\u003C\u002Fsub>O\u003Csub>2\u003C\u002Fsub>；CH\u003Csub>3\u003C\u002Fsub>OCH\u003Csub>2\u003C\u002Fsub>OCH\u003Csub>3\u003C\u002Fsub> \u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>\u003Cstrong> 分子量: \u003C\u002Fstrong>\u003C\u002Ftd>\n\u003Ctd> 76.10 \u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>\u003Cstrong> 熔 点: \u003C\u002Fstrong>\u003C\u002Ftd>\n\u003Ctd> 104.8℃ 沸点：42.3℃ \u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>\u003Cstrong> 密 度: \u003C\u002Fstrong>\u003C\u002Ftd>\n\u003Ctd> 相对密度(水=1)0.86； \u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>\u003Cstrong> 蒸汽压: \u003C\u002Fstrong>\u003C\u002Ftd>\n\u003Ctd> -17℃ \u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>\u003Cstrong> 溶解性: \u003C\u002Fstrong>\u003C\u002Ftd>\n\u003Ctd> 微溶于水，可混溶于乙醇、乙醚等多数有机溶剂 \u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>\u003Cstrong> 稳定性: \u003C\u002Fstrong>\u003C\u002Ftd>\n\u003Ctd> 稳定 \u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>\u003Cstrong> 外观与性状: \u003C\u002Fstrong>\u003C\u002Ftd>\n\u003Ctd> 无色液体，有类似氯仿的气味 \u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>\u003Cstrong> 危险标记: \u003C\u002Fstrong>\u003C\u002Ftd>\n\u003Ctd> 7(低闪点易燃液体) \u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>\u003Cstrong> 用 途: \u003C\u002Fstrong>\u003C\u002Ftd>\n\u003Ctd> 用作溶剂、分析试剂 \u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003C\u002Ftbody>\n\u003C\u002Ftable>\n\u003Cbr \u002F>\n\u003Cb> 2.对环境的影响: \u003C\u002Fb>\n\u003Cbr \u002F>一、健康危害 \n\u003Cbr \u002F>\n\u003Cbr \u002F>侵入途径：吸入、食入、经皮吸收。 \n\u003Cbr \u002F>健康危害：本品对粘膜有刺激性，有麻醉作用。吸入蒸气可引起鼻和喉刺激；高浓度吸入出现头晕等。对眼有损害，损害可持续数天。长期皮肤接触可致皮肤干燥。 \n\u003Cbr \u002F>\n\u003Cbr \u002F>二、毒理学资料及环境行为 \n\u003Cbr \u002F>\n\u003Cbr \u002F>毒性：对粘膜有明显刺激。对豚鼠眼有中等刺激作用。 \n\u003Cbr \u002F>急性毒性：LD505708mg\u002Fkg(兔经口)；LC5046650mg\u002Fm3(大鼠吸入) \n\u003Cbr \u002F>亚急性和慢性毒性：小鼠吸入58g\u002Fm3×2小时\u002F日×2次，80%死亡；小鼠吸入34100g\u002Fm3×7小时×15次，6\u002F50死亡。 \n\u003Cbr \u002F>\n\u003Cbr \u002F>危险特性：其蒸气与空气可形成爆炸性混合物。遇明火、高热及强氧化剂易引起燃烧。与氧化剂接触会猛烈反应。接触空气或在光照条件下可生成具有潜在爆炸危险性的过氧化物。 \n\u003Cbr \u002F>燃烧(分解)产物：一氧化碳、二氧化碳。 \n\u003Cbr \u002F>\n\u003Cbr \u002F>\n\n\u003Cb>3.现场应急监测方法: \u003C\u002Fb>\n\u003Cbr \u002F>　 \n\u003Cbr \u002F>\n\u003Cbr \u002F>\n\n\u003Cb>4.实验室监测方法: \u003C\u002Fb>\n\u003Cbr \u002F>气相色谱法(用活性碳吸附、已烷脱附) \n\u003Cbr \u002F>\n\u003Cbr \u002F>\n\n\u003Cb>5.环境标准: \u003C\u002Fb>\n\u003Cbr \u002F>美国 车间卫生标准 3110mg\u002Fm3 \n\u003Cbr \u002F>\n\u003Cbr \u002F>\n\n\u003Cb>6.应急处理处置方法: \u003C\u002Fb>\n\u003Cbr \u002F>一、泄漏应急处理 \n\u003Cbr \u002F>\n\u003Cbr \u002F>迅速撤离泄漏污染区人员至安全区，并进行隔离，严格限制出入。切断火源。建议应急处理人员戴自给正压式呼吸器，穿消防防护服。尽可能切断泄漏源。防止进入下水道、排洪沟等限制性空间。小量泄漏：用活性炭或其它惰性材料吸收。也可以用大量水冲洗，洗水稀释后放入废水系统。大量泄漏：构筑围堤或挖坑收容；用泡沫覆盖，降低蒸气灾害。用防爆泵转移至槽车或专用收集器内，回收或运至废物处理场所处置。 \n\u003Cbr \u002F>\n\u003Cbr \u002F>二、防护措施 \n\u003Cbr \u002F>\n\u003Cbr \u002F>呼吸系统防护：空气中浓度超标时，佩戴过滤式防毒面具(半面罩)。 \n\u003Cbr \u002F>眼睛防护：戴化学安全防护眼镜。 \n\u003Cbr \u002F>身体防护：穿防静电工作服。 \n\u003Cbr \u002F>手防护：戴橡胶手套。 \n\u003Cbr \u002F>其它：工作现场禁止吸烟、进食和饮水。工作毕，淋浴更衣。注意个人清洁卫生。 \n\u003Cbr \u002F>\n\u003Cbr \u002F>三、急救措施 \n\u003Cbr \u002F>\n\u003Cbr \u002F>皮肤接触：脱去被污染的衣着，用肥皂水和清水彻底冲洗皮肤。 \n\u003Cbr \u002F>眼睛接触：提起眼睑，用流动清水或生理盐水冲洗。就医。 \n\u003Cbr \u002F>吸入：迅速脱离现场至空气新鲜处。保持呼吸道通畅。如呼吸困难，给输氧。如呼吸停止，立即进行人工呼吸。就医。 \n\u003Cbr \u002F>食入：饮足量温水，催吐，就医。 \n\u003Cbr \u002F>\n\u003Cbr \u002F>灭火方法：尽可能将容器从火场移至空旷处。喷水保持火场容器冷却，直至灭火结束。处在火场中的容器若已变色或从安全泄压装置中产生声音，必须马上撤离。灭火剂：抗溶性泡沫、干粉、二氧化碳、砂土。用水灭火无效。 \n\u003Cbr \u002F>\u003Cbr \u002F>\u003Cbr \u002F>\u003Cbr \u002F>\u003Cbr \u002F>\u003Cbr \u002F>\u003Cbr \u002F>\u003Cbr \u002F>\u003Cbr 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