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STPP, Sodium Tripolyphosphate
- Product Name: STPP, Sodium Tripolyphosphate
- Appearance: White crystal powder or granule
- CAS No.: 7758-29-4
- Grade: STPP Food Grade; STPP Technical Grade
- Packing: 25Kg,50Kg,1000Kg bags etc
- Product Details
STPP, Sodium Tripolyphosphate (STPP, STP or Sodium Triphosphate or TPP ) with formula Na5P3O10, is a polyphosphate of sodium. It is the sodium salt of triphosphoric acid.
Grade: TRISODIUN PHOSPHATE FOOD GRADE; TRISODIUM PHOSPHATE TECHNICAL GRADE
Molecular Formula: Na5P3O10
Molecular Weight: 367.86
CAS NO: 7758-29-4
Standard Executed : GB25565-2010
Appearance: White crystal powder or granule.
Usage: Food grade STPP is widely used as germicide,emulsifier,,acidity-adjuster,complexing agent,water-retaining agent,stabilizer agent in food industry. Industrial grade STPP is widely used as water solftener, boiler cleaning agent,detergent and rust inhibitor and so on.
Packaging:25Kg,50Kg,1000Kg bags or according to customer's demand.
STPP Food Grade Specifications:
|
Item |
Food grade |
|
|
Main contents( Na3PO4)(lgnited basis) W/% ≥ |
97.0 |
|
|
Main contents( Na3PO4.H2O)(lgnited basis)W/% ≥ |
||
|
Main contents( Na3PO4.12H2O)W/% ≥ |
||
|
PH value(10g/L solution) |
1.5-12.5 |
|
|
Arsenic(as As) (mg/kg) ≤ |
3 |
|
|
Fluoride(as F) ≤ |
50 |
|
|
Heavy metals (as Pb) ≤ |
10 |
|
|
Lead (as Pb） ≤ |
4 |
|
|
Water insoluble W/% ≤ |
0.2 |
|
|
Loss of dryness |
（Na3PO4），W/% ≤ |
2 |
|
(Na3PO4.H2O)，W/% |
8-11 |
|
|
(Na3PO4.12H2O) W/% |
45-57 |
|
STPP Technical Grade Specifications
|
Item |
Industrial Grade |
|
Main contents (as Na3PO4.12H2O)， W/% ≥ |
98.0 |
|
Sulphate (as SO4)， W/% ≤ |
0.5 |
|
Chloride(as Cl）， W/% ≤ |
0.4 |
|
Arsenic (as As)， W/% ≤ |
0.005 |
|
Iron (as Fe)， W/% ≤ |
0.01 |
|
Water insoluble w/%≤ |
0.1 |
|
PH value(10g/L solution） |
11.5-12.5 |
