... ,efflorescent in air,easily soluble in water,but insoluble in alcohol,water solution is slightly alkaline,relative density ... is 1.63,melting point is 34.6.USE: used as a fire-prevention agent ... fabric,timber,and paper,also as water softening agent for boiler,food additive,buffering agent,solder,tanning agent,etc.Technical Specifications:Assay ≥ 98 ...