(1) Metallurgy industry: As precipitating and resolving agent for rare earth metal, etc.
(2) Organic Synthesis: For 2133 rein, ures form aldehyde powder etc.
(3) Light industry: Polishing of DA LI stone, removing rust bleachingproductssof leather, wood and aluminium ect.
(4) Printing Industry: Dyeing agent
(5) Medicine Industry: For making tetracydine, HCl ect.
(6) Others: As laboratory agent, solvents activato and basic materialsfor chemical industry