1,Formula: C₆H₅Na₃O₇·2H₂O

2,Formula wt: dihydrate 294.10

3,CAS: dihydrate [6132-04-3]

4,Specificity: Colorless or white crystalline granule or  crystalline powder odorless; taste salty and cold, soluble in water, difficulty in ethanol; slightly deliquescence in moist air,pH7.5-9 in 5% aqueous solution, when heated to 150°C,it may lose crystal water.

5,Packing: 25kg net paper bag or 1mt big bag with PE liner.