带氟物质的一些性质.doc

19、带氟物质的一些性质：19.1氟化氢等物质的物化数据：序号类别HFH2SO4SO2CaF2SiF4H2SiF61分子量20.0198.096478.08104.06144.112沸点19.4338-10-652603熔点-8310.5-75.51360-92.0584临界温度230.21-14.15（-259.10K）5临界压力atm6436.76临界密度g/ml0.297密度液体g/cm30.9576251.8420（98.4%）1.43408气体g/l3.5532.9274.6901atm9比热液体cal/g.12.20.3389.5210气体1atm，2514318.211蒸发潜热，卡/克分子1.609（1.8）1225.964.46112.912粘度，厘泊00.260.2762013表面张力，dyn/cm8.614介电常数083.615熔化热卡/克分子1.094（46.93）16导电率-1.cm-12.6-5.710-617标准熵，卡/克分子41.5259.4H2980K-370千卡/克分子18折光率1.433919固体比重3.1820假比重1.8-1.9logP=8.453（-957/T）PmmHg，T0K21卫生允许浓度0.001mg/l19.2 HF的物性19.2.1热力学函数：H2（气）+F2（气）=2HF（气）H298.1=-64.10（卡/克分子）F298.1=-64.91（卡/克分子）S298.1=1.68（卡/克分子）注：有的资料HF生成热为-64.45千卡/克分子（也有-64.9千卡/克分子）19.2.2 密度：.d=1.0020-2.262510-3t+3.12510-6t2（g/cm3）t，-92.3-60-30019.425d1.211.16601.07351.00750.9590.957619.2.3水溶液比重：HF%5102030405060708090100D201.0201.041.081.1101.1591.1981.2351.2581.2591.1781.0005D41.0171.0351.0701.1011.1301.15519.2.4 HF的比热（200-2700K）之间：Cp=15.51-0.0538t+2.1810-4t2（卡/克分子.）Cp卡/克分子.13.4513.7214.1214.6015.1015.6516.2016.750.85t，0K200210220230240250260270019.2.5饱和蒸汽压与温度关系：logP=7.37-1315/TlogP=7.3739-1316.79/T以上两式摘自氟化学，PmmHg，0K。logP=8.38-1952.6/（355.5+t）此式摘自矿物盐工艺，（0-105）（PmmHg，t）温度P （磅/吋2）1磅/吋2=0.0703kg/cm2饱和蒸汽密度g/m3液体密度g/m3汽化热cal/20.01g热容cal/20.01g液体Cp蒸汽CvCp-700.2031.17610.34-600.3661.14910.42-500.6701.12310.54-401.141.09810.70-301.881.07310.87-203.001.04811.10-104.651.02511.3507.000.002151.00311.621010.30.002520.9811.942015.00.003170.968161611.2411.06603021.20.003980.945177711.401934029.50.004980.928192511.741975039.80.004190.908206312.08836053.80.007650.888219312.42297071.00.009390.867231212.76148093.00.011440.844242713.1010901190.013850.820253013.4481001530.796263113.76719.2.6 表面张力：=40.7（1-T/503.2）t，-60-40-200dyn/cm15.413.611.710.119.2.7 HF的粘度log=-4.282+0.006372T+806.1/Tt -68.75-62.5-56.25-50.0-43.75-37.5-31.25-25.0-18.75-12.5-6.250+6.25纯HFC厘斯0.7800.6680.5850.5070.4500.3970.3600.3300.3060.2850.2700.2560.243厘泊0.9140.7720.6660.5700.4980.4340.3870.3500.3200.2960.2740.2560.24019.2.8 HF的介电常数：t -73-70-42-270常数174.8173.2134.2110.683.619.2.9汽液平衡数据：HF-H2O系统分子%H2F2（A）-H2O系统分子%t 液相HF气相HFt PmmHg液相A液相A101.64.950.780.140.867.5100102.89.21.8320116.067.5100106.818.96.4230.028.19.10.86108.422.810.630.023.818.43.3110.327.9.17.830.019.927.911.8111.733.830.630.025.847.379.5112.034.432.130.019.367.5100.0112.134.634.050.170.218.44.1112.335.835.750.158.927.913.1112.435.835.950.174.947.377.0112.136.738.660.0133.09.11.2112.439.747.570.0209.09.111.3108.744.463.370.0190.018.44.0106.846.470.0156.027.914.6101.750.381.270.0186.047.374.398.952.386.290.956.092.286.658.296.979.061.898.874.663.898.461.669.898.545.179.898.633.588.099.0HF-H2O系统气液平衡组成（重量）%液相HF%气相HF%观测沸点PmmHg正常沸点5.470.87100.8740.5101.610.12.03102.2745.1102.820.67.06106.8759.7106.824.711.9107.8747.2108.430.419.4110.1754.6110.336.232.8111.6757.0111.736.834.4111.9758.4112.037.636.4112.2762.7112.138.2238.15112.1754.9112.338.2738.26112.0750.2112.439.241.1111.9756.1112.142.250.1111.5762.6112.447.065.7108.3751.7108.749.2106.7757.1106.852.982.6101.3749.8101.754.887.498