Usage: used as high-effective water softener for cooling water treatment of power plants, railway vehicles, boilers and chemical fertilizer plants, promoter of detergents, control or anticorrosive reagents, cement hardening promoter, streptomycin purification agent, cleaning agent for fiber and bleaching and dyeing industries and flotation agent for the mining processing industry. It is used to prevent corrosion of drilling pipes and control the slurry viscidity in oil drilling. It has some certain uses in the departments such as textile dyeing, tanning, paper making, color film, soil analysis, radiochemistry, analysis chemistry.