In summary, a novel leaching method was established that uses low-cost and widely available compounds: TCCA is commonly used in water disinfection, and it is activated by reaction with simple halide salts. Here is the first reported demonstration of such a system in the oxidative dissolution of gold. The leaching solution is thought to form hypohalous acids and other active chlorine and bromine species. TCCA is an easy-to-handle surrogate for molecular chlorine and bromine and other reactive halide species. Its use in gold leaching complements other halide-based methods that are also effective, but slower, more expensive, or less practical to implement . Moreover, the product cyanurates can be recycled and converted back to TCCA.