We offer poly ethylene glycol 400. 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. peg 400 is soluble in water, acetone, alcohols, benzene, glycerin, glycols, and aromatic hydrocarbons, and is slightly soluble in aliphatic hydrocarbons. Product informationcas no 25322-68-3chemical formula ho(cho)nhhill formula ho(cho)nhphysicochemical informationdensity 1.13 gcm (20 c)melting point 4 - 8 cboiling point >200 c (1013 hpa)ignition temperatare 360 c din 51794ph value 5 - 7 (100 gl, ho, 20 c)vapor pressure < - 0.1 hpa (20 c)solubility (20 c) solubleflash point 240 c