Physical and chemical properties：
The aqueous solution of TKPP is a colorless and transparent liquid. Its relative density is 1.6 - 1.7 g/cm³. It can form chelates with heavy metal ions.
Applications：
The 60% aqueous solution of potassium pyrophosphate (KTPP) is mainly used in metal surface treatment, macroelement water-soluble fertilizers, and has a high complexing capacity for metal ions. Pyrophosphate can form stable complexes with calcium ions in water, which can soften hard water, improve detergency, remove dirt, form a protective layer on metal surfaces, and enhance corrosion resistance. It is widely used in the industries of industrial component cleaning and metal pretreatment. This solution is clear without impurities or precipitates, with excellent stability, and no hydrolysis will occur within one year. It meets world-class standards.
| Specifications | Low iron | Food Grade | |
|---|---|---|---|
| Packing: | 25kg/drum, in plastic or iron drums with inner bag,or as customer's requuirement. | ||
| Appearance | clear liquid | clear liquid | |
| Assay(K4P2O7) % | 58-61 | 58-61 | |
| P2O5 % | 21-22 | 21.22 | |
| K2O % | ≥28 | ≥28 | |
| Fe % | ≤0.005 | 0.001 | |
| As % | ≤0.0005 | ≤0.0003 | |
| Heavy metal(as Pb) % | ≤0.001 | ≤0.001 | |
| pH(1%sol.) | 10.0~11.0 | 10.0~11.0 | |
| Water insoulble % | ≤0.1 | ≤0.1 | |
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:60% potassium pyrophosphate solution 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.
