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This monograph for Formic Acid, 96% provides, in addition to common physical constants, a general description including typical appearance, applications, change in state (approximate), aqueous solubility, density, and pKa. The monograph also details the following specifications and corresponding tests for verifying that a substance meets ACS Reagent Grade specifications including: Assay, Color (APHA), Dilution Test, Residue after Evaporation, Acetic Acid, Ammonium, Chloride, Sulfate, Sulfite, Heavy Metals, Iron. Special caution is advised for the handling or testing of this substance.