Mainly used as solvent and organic synthesis intermediates, used for making gas
purifying agent (CO2), lubricating oil additive, emulsifying agent, photographic
chemicals, surface active agent, fabric finishing agents, paper strengthening agent,
complexone, ash-free additives, metal, hydrometallurgy of heavy metals and
chelating agent without cyanide electroplating diffusion agent, brightener, ion
exchange resin and polyamide resin, etc