Customization: | Available |
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CAS No.: | 7758-29-4 |
Usage: | Water Treatment Chemicals, Paper Chemicals |
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Testing Items | STPP Food Grade | STPP Technical Grade |
Appearance | White Powder or granules | White Powder or granules |
Content (Na5P3O10)% | 95.0 min | 94.0 min |
P2O5 % | 57.0 min | 56.5 min |
Fluoride (F) % | 0.003 max | - |
Arsenic (As)% | 0.0003 max | - |
Heavy Metal (Pb)% | 0.001 max | - |
Chloride (Cl)% | 0.025 max | - |
Sulfate (SO42-) % | 0.4 max | - |
Water Insoluble % | 0.05 max | 0.1 max |
pH Value | 9.5-10 | 9.2-10.3 |
Whiteness | 85 min | 85 min |
STPP is a critical additive in detergents and cleaning products, where it serves multiple functions:
Chelation of Metal Ions: STPP binds calcium (Ca²+) and magnesium (Mg²+) ions in hard water, preventing them from forming insoluble salts with surfactants. This enhances detergent efficiency, reduces residue on fabrics, and maintains fabric brightness
Emulsification and Dispersion: It breaks down proteins and fats in stains, emulsifies oils, and disperses solid particles (e.g., dirt, sand), improving overall cleaning performance