久久小草成人av免费观看丨av在线亚洲欧洲日产一区二区丨亚洲天堂视频一区丨国产美女无遮挡免费丨夜夜撸影院丨操操干丨欧美 亚洲 丝袜 清纯 中文丨亚洲欧美人色综合婷婷久久丨色综合久久久久丨少妇公车张开腿迎合巨大视频丨青草av久久免费一区丨午夜宅男在线永久免费观看网丨嫩草视频在线播放丨精品国产性色无码av网站丨www91自拍丨极品少妇在线丨日韩成人无码中文字幕丨成人毛片网丨麻豆视频免费网站丨99国产精

white Crystal, Practically insoluble in water, easily soluble in ethanol, benzene, petroleum ether, mp:124°C, bp:280°C, Vapor density:8.4 (vs air), Vapor pressure:0.01 mm Hg ( 20 °C)

Use for Pharmaceutical intermediates and Pesticide intermediates and Dye intermediates, Can be used in the production of Insecticide. Other compounds of reaction intermediates.