Granular hydrogen dioxide: What is the active ingredient (AI) in granular hydrogen dioxide products?

• A. Sodium carbonate peroxhydrate
• B. Sodium chlorate
• C. Potassium permanganate
• D. Hydrogen peroxide

Answer: (A)

Granular hydrogen dioxide delivers its oxidizing power through a solid compound that releases hydrogen peroxide when mixed with water. The active ingredient is sodium carbonate peroxhydrate, a compound that decomposes to hydrogen peroxide and sodium carbonate in solution. This form lets the product provide the oxidative action needed to control algae and other aquatic pests, while the solid granules are easy to handle and dose.

Sodium chlorate, potassium permanganate, and hydrogen peroxide in liquid form aren’t the active ingredient packaged in granular hydrogen dioxide products. The granule’s AI is the perhydrate compound, which is specifically designed to generate hydrogen peroxide in water for effective oxidation.