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Molecular Formula: Na5P3O10
Molecular Weight : 367.86
CAS NO.: 7758-29-4
EINECS NO.: 237-004-9
H.S Code: 2835319000.
White microdot powder with luster,density:0.35-0.9g/cm 3 melting point at 622 °C,easily soluble in water, with remarkable chelating ability to some metal ions such as Ca 2+, Mg 2+, can soften hard water, change suspension into solution, slightly alkaline, without causticity.
2)Usage:
Sodium Tripolyphosphate (STPP) is used as main auxiliary of synthetic wash, soap synergistic agent, water softener, leather pre-tanning agent, dye auxiliary agent, and dispersant of suspension such as paint, kaolin, magnesium oxide, calcium carbonate drilling mud, preservative agent for paper making, organic synthesis catalyzer, and used in epuration of petroleum product, gum latex storage, as dispersant, solvent in metal industry and pharmaceutical industry, also widely used in gum synthesis, foodstuff industry, and poultry process.
3)Specifications:
GB/T9983-2004(technical grade), QB1034-91(food grade)
|
Specifications |
Industrial Grade |
Food Grade |
|
AssayNa5P3O10 % ≥ |
94.0 |
95.0 |
|
P2O5 % ≥ |
57.0 |
57.0 |
|
Water Insoluble Matter %≤ |
0.1 |
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 |
|
Whiteness %≥ |
90.0 |
90.0 |
|
Density: |
0.35-0.9g/cm 3 |
0.55-0.9g/cm 3 |
|
Particle Size Through 35 mesh sieve %≥ Through 100 mesh sieve%≥ Fine power: Through 100 mesh sieve %≥ |
95 90 40 90 |
95 90 40 90 |
4)Packing Details:
Sodium Tripolyphosphate (STPP) will be packed in Net weight 25kgs, 50kgs or 1000kgs plastic-woven sack with polythene inner bag;
20MT-22MT will be loaded in 1*20'fcl container.
5)Storage:
Sodium Tripolyphosphate (STPP) should be stored at a cool, dry and well ventilated place.
