Description Diethyl Chlorophosphate, 99.9%, 25g For Research & Development Not for drug, human, animal, or food use Certificate of Analysis: Appearance (Color) Clear, Colorless to light yellow Appearance (Form) Liquid Purity (GC) 97.7% Purity (Argentometric Titration) 99.9% CAS: 814-49-3 FORMULA: C4H10ClO3P