Perfluorooctane, also known as octadecafluorooctane, is a fluorocarbon liquid—a perfluorinated derivative of the hydrocarbon octane. It can be a good substitute for insulating oil in high voltage electronics. In addition to heat transfer applications, it has also been used as a breathable fluid in partial liquid ventilation.

CAS：307-34-6
中文别名：全氟正辛烷;十八氟辛烷;
英文别名：eftopef-l100;PERFLUORO-N-OCTANE;Perfluorooctane;Perfluoroctan;FC3280;N-PERFLUORO OCTANE;FC-7118mc-6;Perfluoro-n-octane;Perfluoroctane;1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-octadecafluorooctane;Octane, octadecafluoro-;perfluoro-v-octane;perfluorinated octane;FluorinertPF5080;PF5080;
分子式：C8F18
分子量：438.057
精确质量：437.971
Psa：0.0
Logp：5.9228

MDL号：MFCD00042083

外观与性状：无色液体
密度：1.766g/mLat 25°C(lit.)
沸点：103-106°C(lit.)
熔点：−25°C(lit.)
闪点：99-100°C
折射率：n20/D 1.3(lit.)
稳定性：Stable.
储存条件：Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

RTECS号：RG9701000
安全说明：S23-S24/25
危险类别码：R36/37/38
WGK Germany：3
海关编码：2903399090
危险品标志：F; Xi