It is strongly alkaline and corrosive. It can be used as acid neutralizer, matching masking agent, precipitating agent, precipitation masking agent, color developer, saponification agent, stripping agent, detergent, etc. With strong alkaline and strong hygroscopicity. Easily soluble in water, exothermic when dissolving. The aqueous solution is alkaline and greasy. It is highly corrosive and is corrosive to fibers, skin, glass and ceramics. It reacts with aluminum, zinc, non-metallic boron, and silicon to release hydrogen, and undergoes disproportionation reaction with halogens such as chlorine, bromine, and iodine, and neutralizes with acid to generate salt and water.