苯类物质的危险性--qsf999的安全生产小屋

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苯类物质的危险性 | 2011-10-26 15:37:00

苯类物质的危险性

甲苯、二甲苯是苯类物质的代表性物质。其理化特性为：无色液体，能与苯、醇和醚相混合，不溶于水。甲苯，密度0.87g/cm3,沸点110.6℃。闪点4℃，自然点535℃，爆炸极限1.2%～７%。（二甲苯，密度0.88g/cm3，沸点144.4℃，闪点30℃，自然点463℃，爆炸极限1%～７%）。在生产过程中的主要危险和共同有害因素是：易燃，与空气混合能成为爆炸性混合物。遇到火种、高温、强氧化剂时有引起燃烧爆炸的危险。其蒸汽比空气重，能沿低处扩散相当远，遇明火会回燃。对皮肤、粘膜有轻度的刺激作用，对中枢神经系统有麻醉作用。有毒，车间空气中最高容许浓度100mg/m3。
　　辨识事故类型：火灾爆炸、中毒窒息。

By:qsf999 | 阅读全文 | 回复(17) | 引用通告 | 编辑

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原创 | 2016-9-30 16:00:11

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原创 | 2016-9-28 21:16:55

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原创 | 2016-9-6 21:42:41

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