丁香六月久久_黄色免费视屏_精品国产免费一区二区三区_美女隐私黄www网站动漫_99伊人_午夜电影免费看_超碰蜜臀_日韩午夜激情_国产激情999_91成人短视频_西西人体做爰大胆gogo_永久免费看成人av的动态图_岛国av毛片_18片毛片60分钟免费_草莓视频www.5.app

Tetrachloroethylene

Tetrachloroethylene, also known as perfluoroethylene, is an organic chemical widely used in dry cleaning and metal degreasing, as well as in the manufacture of other chemicals and consumer goods. Colorless liquid, easily volatile, insoluble in water, miscible in most organic solvents such as ethanol and ether, non flammable at room temperature, with a chloroform like odor. Tetrachloroethylene is w