Description
Product name: Tetrapotassium pyrophosphate
Molecular Formula: K₄O₇P₂
Molecular Weight: 330.336522
Structural Formula:
Specification:
Items
Specifications
Melting point
1300°C (lit.)
Density
2.33
Vapor pressure
0 Pa at 20°C
pH (40/l, 25°C)
10.0–11.0
Solubility
Highly soluble in water, but insoluble in ethanol
Items | Specifications |
Melting point | 1300°C (lit.) |
Density | 2.33 |
Vapor pressure | 0 Pa at 20°C |
pH (40/l, 25°C) | 10.0–11.0 |
Solubility | Highly soluble in water, but insoluble in ethanol |
Function of Tetrapotassium pyrophosphate:
- Chelating action: Potassium pyrophosphate can form stable chelates with metal ions, reducing water hardness or preventing metal ions from interfering with product performance.
- Emulsifying and dispersing action: TKPP can reduce the surface tension of liquids, enabling fats, particles, etc., to disperse uniformly in water and preventing precipitation or layering.
- pH Regulation and Buffering: The aqueous solution of TKPP is weakly alkaline, helping to stabilize the acid-base balance of the system.
- Bulking and Water Retention: In food products, tetrapotassium pyrophosphate enhances gluten elasticity, promotes bubble formation, and locks in moisture, improving product texture.
- Detergent and cleaning: Potassium pyrophosphate enhances the activity of surfactants, aiding in the removal of grease and dirt, particularly effective in hard water.
Application of Tetrapotassium pyrophosphate:
- Meat processing: Tetrapotassium pyrophosphate is used as an emulsifier and moisture-retaining agent in sausages, ham, meatballs, etc., improving the water-holding capacity and elasticity of meat paste, preventing fat separation, and extending shelf life.
- Seafood products: For fish balls and shrimp dumplings, TKPP enhances gel strength, reduces cooking losses, and improves texture to be more tender and elastic.
- Bread and baked goods: As a leavening agent and improver, Potassium pyrophosphate is used in bread, cookies, etc., to improve dough extensibility, resulting in fluffy, delicate-textured finished products.
- Canned foods and beverages: Tetrapotassium pyrophosphate regulates pH levels, prevents corrosion of metal container walls, and chelates metal ions to maintain beverage clarity (e.g., plant-based protein drinks).
- Detergents and cleaners: Tetrapotassium pyrophosphate is used as a detergent booster in laundry detergents, dishwashing detergents, etc., chelating calcium and magnesium ions to soften water, enhance cleaning power, and prevent re-deposition of dirt.
- Electroplating industry: As a chelating agent, K₄P₂O₇ is used in metal electroplating to stabilize the concentration of metal ions in the electroplating solution, ensuring uniform and lustrous coatings with improved adhesion.
- Ceramic and glass industry: Potassium pyrophosphate serves as a fluxing agent and dispersant, improving the flowability of ceramic slurry, reducing bubbles during firing, and enhancing product density.
- Water treatment: Used for softening industrial circulating water or boiler water, chelating heavy metal ions in water, and preventing scaling and corrosion.
- Pharmaceutical industry: In certain drug formulations, potassium pyrophosphate serves as a buffer or chelating agent to stabilize drug components.
- Cosmetics and Personal Care: Tetrapotassium pyrophosphate is used in toothpaste, shampoo, and other products as a pH regulator or chelating agent to reduce the impact of metal ions on product stability.
- Textile Industry: Used as a scouring agent and bleaching aid to remove impurities (such as minerals and oils) from fabrics, enhancing subsequent dyeing performance.
Product Packaging and Transportation Show:


FQAs:
- Q1:What kind of packaging do the products usually come in?
A: This depends on the specific form of the product.
a1:If the product is in powder form, it is usually packed in 25kg woven bag/25kg cardboard drum, samples are usually bagged .
a2:If the product is liquid, it is usually packed in 180kg plastic drum/200kg iron drum, and the samples are usually in bottles.
a3:If customers have special requirements, please inform us in advance, we will choose the most suitable packaging according to the actual situation. - Q2:What is your shipping method?
A1:Usually, we will send small goods by FedEx, UPS and other international courier; bulk goods can be selected by sea, air or sea-land transport and other ways.
A2:If you have a designated courier or logistics channel, please be sure to inform us in advance so that we can arrange according to your requirements. - Q3: What methods can customers pay?
A: We offer a variety of payment methods, including TT transfer and credit card payment, which you can choose according to your needs. - Q4: What is your delivery time?
A: The exact delivery time will be determined according to the product category and quantity in your order. - Q5: If you have any questions or needs, please feel free to contact us, we will be happy to provide you with satisfactory service!





