1、Chemical Name: Sodium Hexametaphosphate、Sodium Tetrapolyphosphate. 2、M. F. : (NaPO3)6 3、M. W. :611.17 4、Physical properties: White powder，density is 2.484（20℃），easily soluble in water，but nearly insoble in organic solution，it is absorbent to dampness in the air。absorbabsorbent to dampness. it easily chelate with metallicions such as Ca,Mg. 5、Quality standard:（GB1890-1989、FCC-Ⅳ） Name of index GB 1890-1989 FCC-Ⅳ Total Phosphate (as P2O5 ) ≥% 68.0 60.0-71.0 Inactive Phosphate (as P2O5) ≤% 7.5 - Water Insoluble ≤% 0.06 0.1 Iron (Fe) ≤% 0.05 - PH (1% aqueous solution) 5.8-6.5 - Arsenic (As) ≤% 0.0003 0.0003 Heavy Metal (as Pb) ≤% 0.001 0.001 Fluoride (as F) ≤% 0.003 0.005 6、Usage:Used as water-conservative. Applied to can, fruit drinks, milk product, vegetable protein drinks, instant noodles, meat product, and so on. Used as stabilizer and freezing agent and applied to 7、Packing: It is packed with ployethylene bags as line-r , and a woven bag as the outer layer. The net weight of each bag is 25kg. 8、Storage and transport: It should be stored in a dry . ventilative and clean warthouse; kept away from moisture and hot, Furthermore, it should be stored separstely from poisonous Substances.