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Specifications
Sodium Tripolyphosphate, STPP, 94%
1. Grade: Technical Grade
2. Packing: 25kgs/bag
3. Shelf life: 2 years
Best quality Sodium Tripolyphosphate powder, Technical Grade, STPP, 94%
Detailed Product Description:
Sodium tripolyphosphate (STPP, sometimes STP or sodium triphosphate or TPP ) with formula Na5P3O10
Used as one of the main auxiliaries for synthetic detergent, synergist for soap; Water softener, tanning agent for leather making, auxiliary for dyeing; As an effective dispersion agent for suspensions of coatings, kaolin, magnesium oxide, calcium carbonate and drilling mud etc.; As an oil contamination resistance agent in paper production.
Name of index | QB1034-1991 | FCC-IV | GB/T9983-2004 |
Sodium Tripolyphosphate ≥% | 95 | 85 | 95 |
P 2 O 5 ≥% | 57 | - | 57 |
Fluoride (as F) ≤% | 0.003 | 0.005 | - |
Arsenic (As) ≤% | 0.0003 | 0.0003 | - |
Heavy Metal (as Pb) ≤% | 0.001 | 0.001 | - |
Chloride (as Cl) ≤% | 0.025 | - | - |
Sulfate (as SO 4 2- ) ≤% | 0.4 | - | - |
Water Insoluble ≤% | 0.05 | 0.1 | 0.05 |
pH (1% aqueous solution) | 9.5 -10.0 | - | 9.5-10.0 |
Whiteness ≥% | 85 | - | 80 |
Pb ≤% | - | 0.0002 | - |