Sodium Tripolyphosphate, Purity : 94%min

We are offering STPP (Sodium triphosphate STP, sometimes sodium tripolyphosphate or TPP
Sodium Tripolyphosphate)
H. S. Code: 2835 3100
Chemical formula: Na5P3O10
Molecular weight: 367.86
CAS No. 7758-29-4
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.
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.
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