Perfluorooctanesulfonyl fluoride (POSF) is a synthetic perfluorinated compound with a sulfonyl fluoride functional group. It is used to make perfluorooctanesulfonic acid (PFOS) and PFOS-based compounds. These compounds have a variety of industrial and consumer uses, but POSF-derived substances ultimately degrade to form PFOS.

CAS：307-35-7
中文别名：FX-8;全氟辛烷磺酰氟;十七氟代正辛烷磺酰氟;全氟-1-辛烷磺酸氟/POSF同PFBS;全氟正辛基磺酰氟;1,1,2,3,3,4,4,5,5,6,6,7,7,8,8,8-十七氟-1-辛基磺酰氟;全氟-1-辛烷磺酰氟;十七氟-1-辛烷磺酰氟;全氟-1-辛烷;
英文别名：Perfluorooctylsulfonyl fluoride;Heptadecafluorooctanesulfonyl fluoride;Perfluoro-1-octanesulfonyl fluoride;1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-Heptadecafluorooctane-1-sulfonyl fluoride;perfluorooctyl-sulphonyl fluoride;PERFLUOROOCTYLSULFONYL FLUORIDE;Heptadecafluoro-1-octanesulfonyl Fluoride;Perfluorooctanesulfonyl fluoride;EINECS 206-200-6;n-C8F17SO2F;N-Perfluorooctanesulfonyl fluoride;Perfluorooctanesulfonyl Fluoride;1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8 heptadecafluoro-n-octanesulfonyl fluoride;Heptadecafluorooctanesulphonyl fluoride;perfluoro-n-octanesulfonyl fluoride;
分子式：C8F18O2S
分子量：502.121
精确质量：501.933
Psa：42.52
Logp：6.3334

MDL号：MFCD00012016

外观与性状：透明无色液体
密度：1.824g/mLat 25°C(lit.)
沸点：154-155°C(lit.)
熔点：-1 °C
闪点：>100°C
折射率：n20/D 1.301
储存条件：Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
蒸汽密度：>1 (vs air)
蒸汽压：<10 mm Hg ( 20 °C)

安全说明：S26-S36/37/39-S45-S25
危险类别码：R34
WGK Germany：3
危险品运输编码：UN 3265 8/PG 2
海关编码：2942000000
危险类别：8
包装等级：II
危险品标志：C

用途
FT-8全氟辛基磺酰氟是制备含氟表面活性剂的起始原料之