Sodium Tripolyphosphate STPP granules STPP powder
STPP Sodium Tripolyphosphate
Assay:94%;White powder/granule
Type:FOOD Grade,Tech Grade
25 KG/BAGS
Shelf life:2 years
STPP or sodium triphosphate is an inorganic compound with formula Na5P3O10. STPP,Sodium
Tripolyphosphate is the sodium salt of the polyphosphate
penta-anion, which is the conjugate base of triphosphoric acid.
Sodium tripolyphosphate is produced by heating a stoichiometric
mixture of disodium phosphate, Na2HPO4, and monosodium phosphate,
NaH2PO4, under carefully controlled conditions. Sodium
tripolyphosphate stpp
China Preservative Food Grade STPP Sodium Tripolyphosphate
STPP,Sodium Tripolyphosphate Food Grade
| ITEM | STANDARD |
| ASSAY (%) (Na5P3O10) | 95 MIN |
| APPEARANCE | WHITE GRANULAR |
| P2O5 (%) | 57.0 MIN |
| FLUORIDE (PPM) | 10MAX |
| CADMIUM (PPM) | 1 MAX |
| LEAD (PPM) | 4 MAX |
| MERCURY (PPM) | 1 MAX |
| ARSENIC (PPM) | 3 MAX |
| HEAVY MENTAL (AS PB) (PPM) | 10 MAX |
| CHLORIDES (AS CL) (%) | 0.025 MAX |
| SULPHATES (SO42-) (%) | 0.4 MAX |
| SUBSTANCES NOT DISSOLVED IN WATER (%) | 0.05 MAX |
| PH VALUE (%) | 9.5 - 10.0 |
| LOSS ON DRYING | 0.7% MAX |
| HEXAHYDRATE | 23.5% MAX |
| WATER-INSOLUBLE SUBSTANCES | 0.1% MAX |
| HIGHER POLYPHOSPHATES | 1% MAX |
STPP,Sodium Tripolyphosphate Tech Grade
| Items | Standards |
| Assay (%) (Na5P3O10) | 94%MIN |
| Appearance | WHITE GRANULAR |
| P2O5 (%) | 57.0 MIN |
| Bulk density | 0.4~0.6 |
| Iron | 0.15%MAX |
| Temperature rise | 8~10 |
| Polyphosphate | 0.5 MAX |
| PH value(%) | 9.2 - 10.0 |
| Ignition loss | 1.0% MAX |
| 20mesh through | ≥90% |
Packaging & Shipping
25Kg Bag
Our Services
1. Quality control--we will monitor the product quality from
booking order to delivery.
2. After-sales service---we will be responsible for the goods when
clients receive it within 3 months.
3. Sample testing--free sample for test before shipment is
available. after shipment, the batch sample will be kept until the
expiry date.
4. Fast delivery--prompt shipment with full and professional
documents.
5. Professinal loading---we will take pictures before and after
loading as proof for clients' review.
6. Special service---we can tailor the shipping marks as per
clients' requirements.
