Description Phthalic Anhydride, Reagent, 99.7+%, 2.5kgFor Research & DevelopmentNot for drug, human, animal, or food use Specifications:Appearance (Color) WhiteAppearance (Form) Flake/Crystalline powderAssay 99.7+%Color Molten, APHA <20Color Stability, APHA (2 hr. @ 250 °C) <50Freezing Point 130.9 °C min.Naphthoquinone <0.25 ppmPhthalic Acid <0.2% CAS: 85-44-9 FORMULA: C8H4O3