1. As a complexing agent, it can form metal complexes with various metals, analyze and measure, and separate rare metals. It can also be used to extract individual metals from rare metals.

2. As a catalyst, it can be used as a foaming catalyst in the production of polyurethane foam plastics, which can foam immediately and gel quickly.

3. As a stabilizer, it can be used as a stabilizer in the production of polystyrene.

4. As an electroplating agent, it can accelerate the deposition rate in non-toxic electroplating.

5. As a color photographic developer, it is one of the important components in color photographic development and can be used to prevent the generation of precipitation during development.