1. mainly used for rubber or cable industry as reinforcing agent and active agent, but also for white rubber colorant and filler, used as vulcanizing agent in neoprene rubber  
2. in the fertilizer industry used as raw gas for fine desulfurization  
3. mainly used as white pigment, rubber sulfide active agent, organic synthesis catalyst, desulfurization agent, used for xerography, pharmaceutical, etc  
4. for the synthesis of ammonia, oil, natural gas chemical raw material gas desulfurization  
5. used as analytical reagent, reference reagent, fluorescent agent and photosensitive material matrix