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Old Bridge Chemicals

North America’s Largest Manufacturer of Copper and Zinc Compounds
Established 1962




OB’s copper sulfate and zinc sulfate are certified for use as organic crop fertilizers and soil amendments. Our copper sulfate is also certified for use as an organic crop pesticide and for organic weed and disease control. Read more.

Animal Feed

Our copper sulfate, zinc sulfate, and Emerald-C products are widely trusted by feed ingredient manufacturers and farmers to ensure nutritious, high-performance animal feed. Every product is manufactured at our New Jersey FAMI-QS, HACCP and AFIA certified safe feed/ safe food facility. Read more.

Foot Bath

OB footbath products include copper and zinc sulfate products that dramatically optimize the effectiveness of conventional, heavy metal footbath solutions. Non-carcinogenic, our products include acidified and acidified multi-mineral formulations to help prevent hoof infection. Read more.


Our copper and zinc compounds are used extensively for industrial applications. Copper’s chemical, physical and aesthetic properties make it a material of choice for high technology applications.  Zinc sulfate is used as an electrolyte for zinc plating, a dye fixative in dyeing, a preservative for skins and leather, as well as an astringent and emetic in medicine. It is also used in making luminous paints, fluorescent lights, and X-ray screens. Read more.

Water Treatment

Our copper and zinc products are frequently used in water treatment for drinking water, industrial water supply, personal pond care, and swimming pools. Copper sulfate is widely used for this purpose due to its natural long-term antimicrobial potency and algae control.  Zinc sulfate is primarily used in water treatment for corrosion control of water carrying pipes. Read more.