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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24d（理论）。\u003C\u002Fp>\n\u003Cp>在pH为7，8的环境中，水解半衰期分别为2a和74d（理论）。\u003C\u002Fp>\n\u003Cp>\u003C\u002Fp>\n\u003Cp>\u003Ca href=\"\u002Fen\u002Fcas\u002F554-12-1_414742.html#duXinDiv\">丙酸甲酯毒性英文版\u003C\u002Fa>\u003C\u002Fp>\n\n\u003C\u002Ftd>","\u003Cp>1.由丙酸与甲醇酯化而得。将5kg丙酸；3kg甲醇和300g硫酸混合，加热回流6-8h，分去硫酸层，将酯层冷却。用粗品酯同体积的食盐水洗涤酯层，用碳酸钠溶液洗至无酸性，干燥后进行分馏可得3.5L丙酸甲酯。\u003C\u002Fp>\u003Cp>\u003C\u002Fp>\u003Cp>精制方法：常含有游离的酸和醇及水等杂质。精制时用碳酸氢钠或碳酸钠饱和溶液洗涤，无水碳酸钠或硫酸钠干燥后精馏。也可用饱和氯化钠水溶液洗涤，无水碳酸钠干燥后在五氧化二磷存在下蒸馏。\u003C\u002Fp>\u003Cp>\u003Cbr \u002F>\u003C\u002Fp>","\u003Ctd>\n\n\u003Ctable>\n\u003Ctbody>\n\u003Ctr>\n\u003Ctd>\u003Cstrong> 国标编号: \u003C\u002Fstrong>\u003C\u002Ftd>\n\u003Ctd> 32135 \u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>\u003Cstrong> ＣＡＳ: \u003C\u002Fstrong>\u003C\u002Ftd>\n\u003Ctd> 554-12-1 \u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>\u003Cstrong> 中文名称: \u003C\u002Fstrong>\u003C\u002Ftd>\n\u003Ctd> 丙酸甲酯 \u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>\u003Cstrong> 英文名称: \u003C\u002Fstrong>\u003C\u002Ftd>\n\u003Ctd> methyl propionate \u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>\u003Cstrong> 别 名: \u003C\u002Fstrong>\u003C\u002Ftd>\n\u003Ctd> \u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>\u003Cstrong> 分子式: \u003C\u002Fstrong>\u003C\u002Ftd>\n\u003Ctd> C\u003Csub>4\u003C\u002Fsub>H\u003Csub>8\u003C\u002Fsub>O\u003Csub>2\u003C\u002Fsub>；CH\u003Csub>3\u003C\u002Fsub>CH\u003Csub>2\u003C\u002Fsub>COOCH\u003Csub>3\u003C\u002Fsub> \u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>\u003Cstrong> 分子量: \u003C\u002Fstrong>\u003C\u002Ftd>\n\u003Ctd> 88.15 \u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>\u003Cstrong> 熔 点: \u003C\u002Fstrong>\u003C\u002Ftd>\n\u003Ctd> -87.5℃ 沸点：79.8℃ \u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>\u003Cstrong> 密 度: \u003C\u002Fstrong>\u003C\u002Ftd>\n\u003Ctd> 相对密度(水=1)0.94； \u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>\u003Cstrong> 蒸汽压: \u003C\u002Fstrong>\u003C\u002Ftd>\n\u003Ctd> 2℃ \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 \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 \u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>\u003Cstrong> 危险标记: \u003C\u002Fstrong>\u003C\u002Ftd>\n\u003Ctd> 7(中闪点易燃液体) \u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>\u003Cstrong> 用 途: \u003C\u002Fstrong>\u003C\u002Ftd>\n\u003Ctd> 用作溶剂及制造香料 \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：具有刺激性，接触时间过长有麻醉作用。 \n\u003Cbr \u002F>\n\u003Cbr \u002F>二、毒理学资料及环境行为 \n\u003Cbr \u002F>\n\u003Cbr \u002F>急性毒性：LD505000mg\u002Fkg(大鼠经口)；LC5027000mg\u002Fm3(小鼠吸入) \n\u003Cbr \u002F>危险特性：易燃，其蒸气与空气可形成爆炸性混合物。遇明火、高热或与氧化剂接触，有引起燃烧爆炸的危险。其蒸气比空气重，能在较低处扩散到相当远的地方，遇明火会引着回燃。 \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，参照《分析化学手册》(第四分册，色谱分析)，化学工业出版社 \n\u003Cbr \u002F>\n\u003Cbr \u002F>5.环境标准： \n\u003Cbr \u002F>前苏联 车间空气中有害物质的最高容许浓度 10mg\u002Fm3[皮] \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：可能接触其蒸气时，应该佩戴自吸过滤式防毒面具(半面罩)。紧急事态抢救或撤离时，建议佩戴空气呼吸器。 \n\u003Cbr \u002F>眼睛防护：一般不需要特殊防护，高浓度接触时可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：戴乳胶手套。 \n\u003Cbr \u002F>其它：工作现场严禁吸烟。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：灭火剂：泡沫、二氧化碳、干粉、砂土。喷水保护火场溶器冷却，直至灭火结束。 \n\u003Cbr \u002F>\u003Cbr \u002F>\u003Cbr \u002F>\u003Cbr \u002F>\u003Cbr \u002F>\u003Cbr \u002F>\u003Cbr \u002F>\u003Cbr \u002F>\u003Cbr \u002F>\u003Cbr \u002F>\u003Cbr \u002F>\u003Cbr \u002F>\u003Cbr \u002F>\n\n\u003C\u002Ftd>","2026-08-21T07:51:12.859463Z",false,[424,430,436,442,448,454],{"slug":425,"cid":426,"name":427,"nameZh":428,"cas":429},"785893066018918400","J-1495052-6","Magnesium 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