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Potassium Metaphosphate

Chemical Formula: (KPO3)n
​Molecular Weight: 118.06n
​CAS No.​: 7790-53-6
​EINECS No.​: 232-212-6

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Introduction

Potassium Metaphosphate is an inorganic compound appearing as white fibrous crystals or powder. It is soluble in dilute inorganic acids, slightly soluble in cold water, and insoluble in ethanol. This versatile additive serves multiple functions in food processing including fat emulsification, moisture retention, texture modification, and protein precipitation.

Specifications

ParameterSpecifications
AppearanceWhite crystalline powder
Assay (as P2O5) %56.0~80.0
Chloride (as Cl) % max0.1
Sulfate (as SO4) % max0.1
PhosphateMeet the requirement
CarbonateMeet the requirement
Arsenic (as As2O3) ppm max3
Heavy metals (as Pb) ppm max20
Loss on drying (110°C, 4h) % max5

Features and Benefits

Key Functional Properties

  • Effective emulsifier: Enhances fat dispersion in food systems
  • Moisture retention: Improves water binding capacity in processed foods
  • Texture modification: Optimizes food structure and mouthfeel
  • Protein interaction: Acts as precipitation agent in food processing
  • Water softening: Effective chelator for metal ions
  • High purity: Meets strict food-grade standards

Applications

Food Industry Applications

  • Meat products: Improves texture and moisture retention
  • Cheese production: Enhances quality and shelf life
  • Evaporated milk: Maintains product stability

Industrial Applications

  • Analytical reagent: Used in laboratory testing
  • Pharmaceutical synthesis: Intermediate in drug production
  • Dye manufacturing: Component in colorant formulations
Usage Tip: For food applications, dissolve in dilute acid before incorporation. Typical usage levels range from 0.1% to 0.5% depending on specific application requirements.

Packaging & Storage

Package: 25kg paper bags with inner PE liner

Shelf Life: 24 months when properly stored

Storage Conditions:

  • Store in dry, well-ventilated area
  • Protect from direct sunlight and moisture
  • Reseal tightly after each use to prevent moisture absorption
  • Keep separate from toxic or hazardous substances