二甲苯的理化性質(zhì)及危險特性表(最新整理)

1、二甲苯的理化性質(zhì)及危險特性表標(biāo)識英文名xylene分子式c8h10分子量106.17危險貨物編號33535un 編號1307imdg 規(guī)則頁碼3292cas 號95-47-6理化性質(zhì)外觀與性狀無色透明液體，有類似甲苯的氣味。熔點-25.5相對密度(空氣=1)3.66沸點144.4臨界溫度357.2相對密度（水=1）0.88臨界壓力 mpa3.70飽和蒸汽壓 kpa1.33(32)燃燒熱 kj/mol4563.3最小引燃能量 mj溶解性不溶于水，可混溶于乙醇、乙醚、氯仿等多數(shù)有機(jī)溶劑。毒性與危害接觸限值中國 mac：100mgm3蘇聯(lián) mac：50mgm3美國 twa：osha 100ppm，4

2、34mgm3；acgih 100ppm，434mgm3美國 stel：acgih 150ppm，651mgm3侵入途徑吸入、食入、經(jīng)皮吸收健康危害對皮膚、粘膜有刺激作用，對中樞神經(jīng)系統(tǒng)有麻醉作用；長期作用可影響肝、腎功能。急性中毒：病人有咳嗽、流淚、結(jié)膜充血等重癥者有幻覺、神志不清等，有時有癔病樣發(fā)作。慢性中毒： 病人有神經(jīng)衰弱綜合征的表現(xiàn)，女工有月經(jīng)異常，工人常發(fā)生皮膚干燥、皸裂、皮炎。燃燒爆炸危險性燃燒性易燃閃點25自燃溫度463爆炸極限%下限 1.0，上限 7.0危險特性其蒸汽與空氣形成爆炸性混合物，遇明火、高熱能引起燃燒爆炸。與氧化劑能發(fā)生強(qiáng)烈反應(yīng)。其蒸汽比空氣重，能在較低處擴(kuò)散到 相

3、當(dāng)遠(yuǎn)的地方，遇火源引著回燃。若遇高熱，容器內(nèi)壓增大，有 開裂和爆炸的危險。流速過快，容易產(chǎn)生和積聚靜電。燃燒分解產(chǎn)物一氧化碳、二氧化碳。穩(wěn)定性穩(wěn)定聚合危害不能出現(xiàn)禁忌物強(qiáng)氧化劑滅火方法泡沫、二氧化碳、干粉、砂土，用水滅火無效。“”“”at the end, xiao bian gives you a passage. minand once said, people who learn to learn are very happy people. in every wonderful life, learning is an eternal theme. as a professional

4、clerical and teaching position, i understand the importance of continuous learning, life is diligent, nothing can be gained, only continuous learning can achieve better self. only by constantly learning and mastering the latest relevant knowledge, can employees from all walks of life keep up with the pace of enterprise development and innovate to meet the needs of the market. this document is also edited by my studio professionals, there may be