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1.PX的结构和性质PX的中文名称是对二甲苯,師師帩结构简式为H_3CCH_3,是一种无色透明的液体,具有芳香气味,低温时成片状或柱状结晶体。密度比水小,约为0.861g/cm3,熔点13.2℃,沸点138.5℃,闪点25℃(闪点是指液体挥发出的蒸汽在与氧气形成混合物后,遇火源能够闪燃的最低温度)。不溶于水,可与乙醇、乙醚、氯仿、丙酮等多数有机溶剂混溶。易燃,低毒,毒性略高于乙
1.PX structure and nature PX Chinese name is p-xylene, division division 构 structure H_3C CH_3 is a colorless and transparent liquid, with aroma, at low temperatures into flake or columnar crystals . The density is smaller than water, about 0.861g / cm3, the melting point of 13.2 ℃, the boiling point of 138.5 ℃, the flash point of 25 ℃ (flash point refers to the liquid volatilized steam in the formation of a mixture with oxygen, ). Do not dissolve in water, with ethanol, ether, chloroform, acetone and most other organic solvents miscible. Flammable, low toxicity, toxicity slightly higher than B.