Pentaerythritol, Certified Reagent CAS Number - 115-77-5 Formula - C(CH2OH)4 or C5H12O4 Molecular Weight -136.15 Appearance - white crystalline Assay (GC) - 99.9% Boiling point - 276°C Density - 1.396 Flash point - 240°C Identification (IR) - conforms to structure Melting point - 257°C Refractive index -1.548 Solubility in water - soluble