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1、二甲苯的理化性质及危险特性表标识英文名Xylene分子式C8H10分子量106.17危险货物编号33535UN 编号1307IMDG 规则页码3292CAS 号95-47-6理化性质外观与性状无色透明液体，有类似甲苯的气味。熔点-25.5相对密度(空气=1)3.66沸点144.4临界温度357.2相对密度（水=1）0.88临界压力 MPa3.70饱和蒸汽压 KPa1.33(32)燃烧热 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、氯仿等多数有机溶剂。毒性与危害接触限值中国 MAC：100mgm3苏联 MAC：50mgm3美国 TWA：OSHA 100ppm，4
2、34mgm3；ACGIH 100ppm，434mgm3美国 STEL：ACGIH 150ppm，651mgm3侵入途径吸入、食入、经皮吸收健康危害对皮肤、粘膜有刺激作用，对中枢神经系统有麻醉作用；长期作用可影响肝、肾功能。急性中毒：病人有咳嗽、流泪、结膜充血等重症者有幻觉、神志不清等，有时有癔病样发作。慢性中毒： 病人有神经衰弱综合征的表现，女工有月经异常，工人常发生皮肤干燥、皲裂、皮炎。燃烧爆炸危险性燃烧性易燃闪点25自燃温度463爆炸极限%下限 1.0，上限 7.0危险特性其蒸汽与空气形成爆炸性混合物，遇明火、高热能引起燃烧爆炸。与氧化剂能发生强烈反应。其蒸汽比空气重，能在较低处扩散到 相
3、当远的地方，遇火源引着回燃。若遇高热，容器内压增大，有 开裂和爆炸的危险。流速过快，容易产生和积聚静电。燃烧分解产物一氧化碳、二氧化碳。稳定性稳定聚合危害不能出现禁忌物强氧化剂灭火方法泡沫、二氧化碳、干粉、砂土，用水灭火无效。“”“”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 errors in the document, if there are errors, please correct, thank you!
