低温反应体系.doc

低温反应体系 温度℃　 冷却浴 0 碎冰 -5 - -20 冰/盐 -10.5 乙二醇/干冰 -12 环庚烷/干冰 -15 苯甲醇/干冰 -22 四氯乙烯/干冰 -22.8 四氯化碳/干冰 -25 1,3-二氯苯 /干冰 -29 邻二甲苯/干冰 -32 间甲苯胺/干冰 -41 乙腈/干冰 -42 吡啶/干冰 -47 间二甲苯/干冰 -56 正辛烷/干冰 -60 异丙醚/干冰 -77 丙酮/干冰 -77 乙酸丁酯/干冰 -83 丙胺/干冰 -83.6 乙酸乙酯/液氮 -89 正丁醇/液氮 -94 己烷/液氮 -94.6 丙酮/液氮 -95.1 甲苯/液氮 -98 甲醇/液氮 -100 乙醚/干冰 -104 环己烷/液氮 -116 乙醇/液氮 -116 乙醚/液氮 -131 正五烷/液氮 -160 异戊烷/液氮 -196 液氮 实验室低温反应浴（干冰或+溶剂） 溶剂, 低温, 干冰, 实验室 干冰与以下试剂混合成糊状可达的低温: 13 o p-Xylene 12 o Dioxane 6 o Cyclohexane 5 o Benzene 2 o Formamide -8.6 o Methyl salicylate -9 o Hexane-2,5-dione -10.5 o Ethylene glycol -11.9 o tert-Amyl alcoho -12 o Cycloheptane or methyl benzoate -15 o Benzyl alcohol -16.3 o n-Octanol -18 o 1,2-Dichlorobenzene -22 o Tetrachloroethylene -22.4 o Butyl benzoate -22.8 o Carbon tetrachloride -24.5 o Diethyl sulfate -25 o 1,3-Dichlorobenzene -29 o o-Xylene or pentachloroethane -30 o Bromobenzene -32 o m-Toluidine -32.6 o Dipropyl ketone -38 o Thiophene -41 o Acetonitrile -42 o Pyridine or diethyl ketone -44 o Cyclohexyl chloride -45o Chlorobenzene -47 o m-Xylene -50 o Ethyl malonate or n-butylamine -52 o Benzyl acetate or diethylcarbito -55 o Diacetone -56 o n-Octane -60 o Di-isopropyl ether -73 o Trichloroethylene or isopropyl acetate -74 o o-Cymene or p-cymene -77 o Butyl acetate -79 o Isoamyl acetate -83 o Propylamine -83.6o Ethyl acetate -86 o Methyl ethyl ketone -89 o n-Butanol -90 o Nitroethane -91 o Heptane -92 o n-Propyl acetate -93 o 2-Nitropropane or cyclopentane -94 o Ethyl benzene or hexane -94.6 o Acetone -95.1 o Toluene -97 o Cumene -98 o Methanol or methyl acetate -99 o Isobutyl acetate -104 o Cyclohexene -107 o Isooctane -108 o 1-Nitropropane -116 o Ethanol or diethyl ether -117 o Isoamyl alcohol -126 o Methylcyclohexane -131 o n-Pentane -160 o Isopentane Some Useful Laboratory Cooling Mixtures Mixture Mixture temperature (Centigrade) p-Xylene