Synonyms: Propionic acid; Methyl acetic acid Molecular Formula: C3H6O2 Molecular Weight: 74.08 Linear Structural Formula: C3H6O2 MDL Number: MFCD00002756 Purity: >=99.0% (GC) Melting Point: -20 C Density: 0.993 g/cm3 at 20 C