Physical and chemical properties：
Potassium tripolyphosphate is a white crystalline powder with a density of 2.54 g/cm³ and a melting point of 620–640°C. It is easily hydrolyzable and alkaline in aqueous solution. Potassium tripolyphosphate has good complexing and dispersing abilities.
Applications：
Industrial-grade potassium tripolyphosphate is widely used in fields such as metal surface treatment, paints and coatings, detergents, boiler descaling, oil well drilling, and printing and dyeing auxiliaries. Potassium tripolyphosphate can also be used as a high-efficiency plant nutrient, metal complexing agent, and soil conditioner. Food-grade potassium tripolyphosphate is used as a texture improver, chelating agent, and moisture-retaining agent in the food industry. Compared with traditional sodium phosphate salts, it has better solubility. When applied in meat products, fish, shrimp, and dairy products, potassium tripolyphosphate particularly enhances the taste.
| Specifications | Industrial Grade | Food Grade | |
|---|---|---|---|
| Packing: | 25kg/bag, in woven or kraft paper bags with inner bag,or as customer's requirement. | ||
| Appearance | White powder or granule | White powder or granule | |
| Assay(K5P3O10) % | ≥95 | ≥85 | |
| P2O5 % | 47approx | 47 approx | |
| K2O % | 52approx | 52 approx | |
| Fe % | ≤0.005 | / | |
| As % | ≤0.001 | ≤0.0003 | |
| Heavy metal(as Pb) % | ≤0.005 | / | |
| pH(1%sol.) | 9.2~10.5 | 9.2~10.5 | |
| Water insoluble % | ≤0.1 | ≤0.1 | |
| Loss in ignition % | ≤1.0 | ≤2.0 | |
Transportation conditions: It is strictly prohibited to mix and transport with oxidants, acids, edible chemicals, etc. During transportation, exposure to sunlight, rain, and high temperatures should be prevented. The vehicle should be cleaned after transportation. For road transportation, it shall follow the specified route. Air transportation: Potassium tripolyphosphate can be handled under ordinary cargo conditions.
Storage conditions: It should be stored in a cool and dry place. Attention should be paid to protecting it from sunlight, moisture and package damage. It is recommended to stack it on shelves or single-layer pallets.
Shelf life: Under the above storage and transportation conditions, the shelf life is 12 months.
