带氟物质的一些性质

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1、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/cm30.957625℃1.8420（98.4%）1.4340℃8气体g/l3.5532.9274.690℃1atm9比热液体cal/g.℃1

2、2.20.3389.5210气体1atm，25℃14318.211蒸发潜热，卡/克分子1.609（1.8）1225.964.46112.9℃12粘度，厘泊0℃0.260.27620℃13表面张力，dyn/cm8.614介电常数0℃83.615熔化热卡/克分子1.094（46.93）16导电率Ω-1.cm-12.6-5.7×10-617标准熵，卡/克分子41.5259.4ΔH2980K-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

3、度0.001mg/l19.2HF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=1.0020-2.2625×10-3t+3.125×10-6t2（g/cm3）t，℃-92.3-60-30019.425d1.211.16601.07351.00750.9590.957619.2.3水溶液比重：HF%510

4、2030405060708090100D20℃1.0201.041.081.1101.1591.1981.2351.2581.2591.1781.0005D4℃1.0171.0351.0701.1011.1301.15519.2.4HF的比热（200-2700K）之间：Cp=15.51-0.0538×t+2.18×10-4×t2（卡/克分子.℃）Cp卡/克分子.℃13.4513.7214.1214.6015.1015.6516.2016.750.85t，0K2002102202302402502602700℃19.2.5饱和蒸汽压与温

5、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

6、.881.07310.87-203.001.04811.10-104.651.02511.3507.000.002151.00311.621010.30.002520.9811.942015.00.003170.968161611.2411.06603021.20.003980.945177711.401934029.50.004980.928192511.741975039.80.004190.908206312.08836053.80.007650.888219312.42297071.00.009390.867231212.76

7、148093.00.011440.844242713.1010901190.013850.820253013.4481001530.796263113.76719.2.6表面张力：σ=40.7×（1-T/503.2）t，℃-60-40-200σdyn/cm15.413.611.710.119.2.7HF的粘度logμ=-4.282+0.006372×T+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

8、.5850.5070.4500.3970.3600.3300.3060.2850.2700.2560.243μ厘泊0.9140.7720.6660.5700.4980.4340.3870.3500.3200.2960.2