Potassium Pyrophosphate
Potassium Pyrophosphate is the common-trade name for tetrapotassium pyrophosphate, the fully neutralised potassium salt of pyrophosphoric acid with the formula K4P2O7. The two names are used interchangeably in technical and regulatory documentation.
The salt is a white free-flowing powder or concentrated liquid that dissolves rapidly in water to a strongly alkaline solution near pH 10.2 at one percent concentration. It is one of the main means of reducing sodium in cured meat, processed cheese, and dairy systems.
We source bulk Potassium Pyrophosphate from top China manufacturers for our partners, working with several of them. The manufacturers are in Jiangsu. For this ingredient the minimum order is 500 kg and a 20-foot container takes 22 MT, and a smaller requirement can ship in a combined container with other ingredients.
Please send the grade you need, the volume and your destination port, and we will come back with a solution and a price.
or call +86-21-6858 0751
- Minimum order
- 500 kg
- Qty in 20' FCL
- 22 MT
- Packaging
- 25 kg kraft paper bag with PE inner liner
- ISO 9001
- HACCP
- Halal
- Kosher
Specifications
| Item | Specification |
|---|---|
| Appearance | White powder or granules |
| Assay (as K₄P₂O₇) | ≥ 97.0% |
| P₂O₅ Content | 42-44% |
| pH (1% solution) | 10.0-10.8 |
| Loss on Ignition | ≤ 0.5% |
| Water Insolubles | ≤ 0.1% |
| Heavy Metals (as Pb) | ≤ 10 mg/kg |
| Arsenic | ≤ 3 mg/kg |
| Fluoride | ≤ 10 mg/kg |
| Identification | Passes test |
| Content (K2CO3) | 99.5%–100.5% |
| Insoluble Substances | clear and colorless |
| Loss on drying | ≤ |
Common Markets Grades
Three formats of potassium pyrophosphate reach the market: dry powder, dry granular, and a 60 percent liquid.
Food-grade material conforms to FCC and E 450(v) purity specifications. The assay minimum is 95 percent K4P2O7 on a dry basis.
Liquid grades dominate the meat and processed-cheese segments because of their ease of dosing and dust-free handling. The 60 percent solution is the standard industry format in practice.
Industrial and detergent grades have wider tolerances on heavy metals, iron, and water-insoluble matter, and are used in liquid laundry and dishwashing builders.
The salt is produced exclusively as the anhydrous compound. No stable hydrate form exists for the potassium analogue, unlike the sodium decahydrate.
Applications
- Sodium-reduced meat and poultry brines for hams, deli meats, and poultry products
- Emulsified meat batters for fast protein extraction in frankfurter and bologna manufacture
- Processed cheese and analogue cheese as a potassium-based emulsifying salt
- Dairy: cream, evaporated milk, and protein-fortified beverages
- Surimi and seafood paste manufacture
- Pet food, especially low-sodium veterinary diets
- Liquid industrial cleaners and dishwashing builders
- Drilling-fluid deflocculants for water-based muds
- Toothpaste tartar-control formulations
- Photographic developer baths as a buffer
China Manufacturers of Potassium Pyrophosphate
Top Potassium Pyrophosphate manufacturers in China.
Jiangsu Hens Food Technology Co., Ltd.11 ingredients in the directory
Lianyungang Zhonghong Chemical Co., Ltd.11 ingredients in the directory- Xuzhou Hens Phosphate Co., Ltd.11 ingredients in the directory
Company names and logos are the property of the manufacturers themselves. They are listed here because our own directory records them as producing this ingredient. A listing is not an endorsement by them, and we do not represent them or speak on their behalf.
How We Help Source Potassium Pyrophosphate
Direct Factory Sourcing
We run the whole process: selecting the manufacturer from the top Chinese food ingredient producers, negotiating the price, verifying quality, and coordinating the logistics. You deal with us instead of with several factories at once.
Original Packaging and Documents from the Manufacturer
The manufacturer sends your Potassium Pyrophosphate out of its own factory in the original packing, through to your destination port. The COA, COO, MSDS, TDS and any certifications reach you from the manufacturer as well.
Free Samples and Lead Time
We send 100 to 500 g free for your own laboratory to test and you cover only the courier, usually within 2 to 3 working days. ETD is usually within 7 to 15 days once the order is confirmed, and we check that date against the factory's own manufacturing schedule before we give it to you.
Combined Shipment
We can load Potassium Pyrophosphate together with other ingredients such as Sodium Tripolyphosphate, Sodium Hexametaphosphate and TetraSodium Pyrophosphate into one 20' FCL. If your quantity is small, we can also ship LCL.
Regulatory Status
Potassium pyrophosphate carries the same regulatory status as tetrapotassium pyrophosphate, since the two names refer to the same compound.
The European Union lists it as E 450(v) within the diphosphate sub-family of phosphate additives. The U.S. FDA recognises it under 21 CFR 182.1810 (GRAS) and within the general phosphate sequestrant entries.
JECFA evaluates the substance within its group assessment of phosphate additives.
FCC monographs cover identity, assay, and impurity limits. Halal and Kosher certifications are routinely available.
The dual naming convention (potassium pyrophosphate and tetrapotassium pyrophosphate) is recognised in all major regulatory frameworks. Manufacturers may choose either name on technical data sheets and ingredient declarations, with potassium pyrophosphate slightly more common in food applications and tetrapotassium pyrophosphate slightly more common in industrial and detergent applications.
Manufacturing Process
Potassium pyrophosphate is produced by thermal condensation of dipotassium orthophosphate, with the same process chemistry as tetrapotassium pyrophosphate because the two names describe the same compound.
Dipotassium orthophosphate is prepared by reacting food-grade phosphoric acid with potassium carbonate at a 1:2 mole ratio. The intermediate is highly soluble, so most plants run the condensation step as a slurry calcination rather than from a fully dried feedstock.
Calcination at 400 to 500 degrees Celsius in continuous rotary, fluidised-bed, or belt furnaces drives the condensation. Two orthophosphate units join with the release of one water molecule, forming the P2O7 pyrophosphate anion bridged by a single oxygen.
The calcined product is cooled, milled, sieved, and either packaged directly as dry powder or dissolved in deionised water at controlled temperature to produce the 60 percent liquid grade.
The liquid is polished by filtration before packaging to remove any insoluble residue and to ensure clarity in dosing pumps.
