Chemical formula:  Na₅P₃O₁₀ 
Molecular weight: 367.86

Quality : White powder, surface density 0.35-0.9g/cm3,melting point 622 . Dissolve in water easily, the aqueous solution is alkalinity. A kind of inorgantic chemical surface-active agent, with two kinds of forms:Na₅P₃O₁₀-i and Na₅P₃O₁₀(B). Two forms have the same chemical property.
Guaranteed Technical Specifications (GB9983-88) :

Indexes	Industrial Grade	Food Grade
Assay Na5P3O10 % ≥	94.0	94.0
P2O5 % ≥	57.0	57.0
Water Insoluble Matter %≤	0.15	0.05
Iron(Fe) %≤	0.01	0.01
PH value (1% water solution)	9.2-10.0	9.5-10.0
Heavy Metal (as Pb) %≤		0.001
Arsenic (As) %≤		0.0003
Fluoride (F) %≤		0.003
Particle Size Through 16 mesh sieve %≥ Through 35 mesh sieve %≥ Trough 100 mesh sieve %≥	95 90 40	95 90 40
Whiteness %≥	90	90

Usage : As chemical additives for making synthetic detergents; synergist for soaps; soft-water agent for industrial water; textile dyeing auxiliaries; and prevent greasy dirt in papermaking industry.

Packing and storage:
In 25Kg or 50 Kg or 1000 Kg net WPP/PE bags. It must be prevented from Dampness and water. Don't store it in the open air.