| CAS No.: | CAS 7758-29-4 |
|---|---|
| Formula: | Na5p3o10 |
| Appearance: | Powder |
| Quality: | Industrial |
| Colour: | White |
| Transport Package: | Bag |
| Samples: |
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| Customization: |
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Product name: Sodium Tripolyphosphate/STPP
Chemical formula: Na5P3O10
Molecular weight: 367.86
Properties: White powder, melting point 622 ºC, easily soluble in water, has significant chelating ability for metal ions such as calcium and magnesium, can soften hard water and turn suspension into solution, is weakly alkaline, non-corrosive, and is a It is an inorganic surfactant that has a strong emulsifying effect on lubricants and fats. The bulk density is usually divided into low density 0.35-0.5g/cm 3 , medium density 0.51-0.65g/cm 3 and high density 0.66-0.9g/ cm 3 ; Pentasodium has two crystal forms: type I (high temperature type) and type II (low temperature type). The two have the same chemical properties. The difference is that type I has higher thermal stability and hygroscopicity than type II, and the solubility of both is higher. , the heat of hydration is different when dissolving.
Used as the main additive for synthetic detergents, soap synergist, leather pretanning agent, water softener for industrial water; effective powder for the treatment of paint, kaolin, magnesium oxide, calcium carbonate drilling mud and other suspensions; papermaking Used as an anti-grease agent; used in the food industry as a quality improver in cans, juice drinks, dairy products, soy milk, etc. It is mainly used to tenderize canned ham and soften bean skins in canned broad beans. It can also be used as a softener and thickening agent.
| Item | Standard | Result | Test verdict |
| (Na5P3O10)/% ≥ | 94 | 94.12 | Ok |
| (P2O5)/% ≥ | 56.5 | 56.8 | Ok |
| Water insoluble matter /% ≤ | 0.1 | 0.023 | Ok |
| Iron(Fe) /% ≤ | 0.015 | 0.00 | Ok |
| Whiteness /% ≥ | 85 | 89.52 | Ok |
| pH Value(1% solution) | 9.2-10.0 | 9.45 | Ok |
| Stacking density g/cm3 | 0.35~0.9 | 0.57 | Ok |
| Granularity | Passes 1mm test,sieving rate is higher than 95% | ||
Packaging: Plastic inside and braided outside, net weight per bag is 25kg or 1000kg. Moisture-proof, waterproof, and cannot be stacked in the open.
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