Specification Specification : GB 25568-2010 Assay(Na2HPO4) % : 98.0 Asmg/kg3 Heavy Metal(Pb)mg/kg10 Pb mg/kg4 Fluoridesmg/kg : 50 Insoluble In Water : %0.2 It is colourless column crystal, odorless, slightly deliquescence. The relative density is 2.04 and melting point is 60C. It is easily soluble in water but insoluble in ethahol. If heated below 100C, it can dissolve in crystal water and convert to monohydrate salt. When heated to 100C, it will lose crystal water and change its anhydrous substances, which will become sodium metaphosphate if it's continue to be heated. FAQ 1.When will Iget reply? We ensure you fast response,fast service.Emailes will be replied in 12 hours,your questions will be answered in time. 2.How about the validity of the products? Accoding to the products you ordered. 3.How about the packing? Usually we provide the packing as 25kg/bag,50KG/bag or carton.Of course,if you have special requirements on them,we will according to you . 4.How about the storage and transport? It should be stored in adry and ventilating warehouse.Be cautious to keep away from moisture and heat;unloaded with care,so as to avoid the damage.Furthermore,it should be stored separately from poisonous substances. 5.Which payment terms do you accept? L/C,T/T,Western Union Paybal and so on.