烷烃的物理性质

动力学直径分子直径蒸汽压

0.382nm0.414nm53.32kPa/-168.8℃

53.32(-99.7℃)

53.32(-55.6℃)

0.43nm106．39／O℃

0.50nm160.09(0℃)

0.43nm13.33kpa/15.8℃

0.62nm40kPa/23.4℃

0.62nm5.41kPa

0.133kPa/47.8℃

0.58~0.67nm13.33kPa（26.1℃）

0.67nm74.53(100℃)

0.63~0.74nm1.33kPa/28.3℃

0.63~0.74nm1.33kPa/32℃

2.48(50℃)

0.59nm1.33/13.2℃

0.64nm8.88kPa/79℃

0.13kPa(88℃)   

0.435.33(19℃)

0.47

0.471187（0℃）

0.50.82kPa/25℃)

0.620.4(20℃)

0.52 58．93kPa(20℃)

0.4634.4(20℃)

0.4753.32(39.5℃)

0.441.5(20℃)

0.4813.33（9.4℃）

0.5213.33(27℃)

lgPH==-0.05223A/T+B

T ——绝对温度，K；

物质名称分子式闪点熔 点沸点密 度(水=1)-188-182.5℃-161.5℃0.42(-164℃)<-50-183.3-88.60.45-104-187.6-42.1 0.58(-44.5℃)-60-138.4-0.50.58-82.8-159.6-11.80.56-25.5-95.368.740.6594-47.8-98.249.70.65-7-107.499.20.6971-9.6215～2170.7487-10.115.5180.10.87864-94.99110.630.866925_48/225K139/ 412K0.8634.4-25.2144.40.880231-96152.40.8617-41.6115.30.982733-6139～1410.92145/2kP7112_114/159K78.4/352 K0.789 -126.597 .40 .803512(146K)-89.582 .4(181℃0 .7855 )-88.9117.50.8117718.18290.91.26331(20℃)-45-116.234.6713.5-30-81480.817.78-955639289.6k)16.6391k)1181.05-10-98.757.80.927.2-83.677.060.894--0.898PH —在室温时的饱和蒸汽压，A，B——各种物质的经验系数。M A B