Great for pickling jewelry and metal components and removing surface oxidatio Deoxidizing Cleaning Compound Non-flammable and non-explosive Cleans Gold, Silver, Copper, Brass Made in the U.S.A High-grade pickling compound removes oxidation and flux from precious metals during refining. It produces smooth, bright, and clean surfaces without damaging fine detail. It is safer than sulphuric acid mixtures. Performs best when heated to 140°F (60°C). The dry granules mix with water to produce a non-flammable, non-explosive pickling solution. Contains sodium bisulfate. Made in the U.S.A.