<p>OCUGAS SF6: CAS number 2551-62-4, density (20°C, 1 bar) 6,07 kg/m3, density ratio to air 5,125. OCUGAS C2F6: CAS number 76-16-4, density (15°C, 1 bar) 5.84 kg/m3, Density ratio to air 4,8. OCUGAS C3F8: CAS number 76-19-7, density (15°C, 1 bar) 8.17 kg/m3, Density ratio to air 6,5.</p>