Hydrofluoric Acid, Veritas Double Distilled, CAS 7664-39-3, Item 1229. Hydrofluoric Acid is a solution of water with Hydrogen Fluoride. The chemical formula for Hydrofluoric Acid is HF. HF is highly corrosive, colorless, and acidic. The acidity of Hydrofluoric acid is 3.17 with a density of 1.15…