国产97人人超碰CAO蜜芽PR_日韩aⅴ无码国产精品_免费毛片a在线观看_国产欧美亚洲精品久91_邻居人妻与教练hd三级_做暧暧视频视频xo_亚洲无码在线精品_丰满少妇高潮掺叫无码_A级毛片大全免费_日韩毛片午夜在线观看

30-60^οC Petroleum ether　 　Petroleum ether price quotations　Petroleum ether production unit 30-60^οC 60-90^οC Domestic 130kg/drum135kg/drum
Product name: Petroleum ether
Alias: Petroleum benzin; Naphtha
CAS No.: 8032-32-4
Physical and chemical properties
Main component: Pentane, hexane.
Appearance and properties: Colorless the transparent liquid with kerosene odor.
Melting point (^οC): <-73
Boiling range (^οC): 30-60  60-90  90-120
Relative density (water=1): 0.64～0.66 　　
Boiling point (^οC): 40～80 　　
Relative vapor density (air=1): 2.50 　　
Main component: Pentane, hexane. 　　
Saturated vapor pressure (kPa): 53.32(20^οC) 　　
Flash point (^οC): <-20
Main use: Mainly used as solvent and in the extraction of fats.