Product name Poly(ethylene glycol) Synonyms Polyethylene glycol; PEG;PEG200 PEG400 PEG800 PEG 1000 PEG4000 PEG 8000 CAS 25322-68-3 Molecular Formula C2H4O Molecular Weight 44.0526 Appearance Colorless clear viscous liquid Assay 99%