sulfamic acid 5 lbs

Jewelers use sulfamic acid as a safe, effective pickling and cleaning agent for gold, silver, copper, and brass. It quickly removes oxidation, heat scale, and flux residue after soldering or annealing, and is a stable, low-fume alternative to sulfuric acid. Ideal for pickling pots, cleaning castings, and preparing metal for polishing or plating, sulfamic acid provides fast, reliable results with minimal handling hazards.