PEG 400 (polyethylene glycol 400) is a low-molecular-weight grade of polyethylene glycol. It is a clear, colorless, viscous liquid. Due in part to its low toxicity, PEG 400 is widely used in a variety of pharmaceutical formulations. TECHNICAL PROPERTIES Density:1.13 g/cm³ Formula:C2nH4n+2On+1,n=8.2to9.1 Molar mass:380-420 g/mol Viscosity: 90.0 cSt at 25 °C, 7.3 cSt at 99 °C Melting point:4 to 8 °C (39 to 46 °F; 277 to 281 K) Flash point:238 °C (460 °F; 511 K)
