CAS No: 127-18-4 Molecular Formula: C2Cl4 EINECS: 204-825-9 Appearance: Transparent liquid CAS No: 127-18-4Molecular Formula: C2Cl4EINECS: 204-825-9Appearance: Transparent liquid Item standard Purity ,% 99.90min Water,Wt%. PPm % 50max Alkalinity, NaOH,% 0.03max Density P20/(g/cm 3 ) 1.615-1.625 Colour(Hazen), 15max Non-volatile matter ,% 0.005max Perchloroethylene CAS No: 127-18-4