Hydrofluoric Acid 49% Solution is a colorless liquid. Hydrofluoric Acid, 49% Solution, contains 49% Hydrofluoric Acid mixed with a balanced quantity of Water. It can be used for the electronic industry to perform cleaning of silicon wafers and etching of semiconductors, as these delicate applications require ultra-purified solvents. Hydrofluoric acid is used in a variety of over-the-counter products such as toilet bowl cleaners, concrete cleaners, and metal polishes. However, the uses for industrial applications are far more numerous. hydrofluoric acid is used for quartz purification, glass etching, refrigerant manufacturing, pharmaceuticals, high octane gasoline, aluminum production, plastics, electrical components, and fluorescent light bulbs. Specifications Appearance: Clear liquid. Hydrofluoric Acid: 49% Min Fluorosilicic Acid (H2SiF6): 0.5% Max Sulfur Dioxide: 0.007% Max Sulfuric Acid (H2SO4): 0.08% Max Packing 500/507.508 lb drum, 4 drums per pallet DOT Transportation UN/NA: UN1790 Proper Shipping Name: Hydrofluoric acid Hazard Class: 8 (6.1) Packing Group: II RQ CERCLA/SARA Section 313 Reportable 100 lbs