Dipotassium Phosphate (DKP)

Key Specifications and Properties

• Molecular Formula: K₂HPO₄

• Molecular Weight: 174.18 g/mol

• Appearance: White crystalline or granular powder

• Purity: ≥99.0% (food/pharma grade); ≥98.0% (technical grade)

• Solubility: Highly soluble in water (≥150 g/100 mL at 20°C); slightly soluble in alcohol

• Density: 2.44 g/cm³

• pH (1% aqueous solution): 8.5–9.6

• Loss on Drying: ≤20.0% (at 105°C)

• Heavy Metals: ≤10 ppm (as Pb)

• Storage: Cool, dry, well-ventilated area; seal tightly to avoid moisture absorption

These characteristics render dipotassium phosphate CAS No. 7758-11-4 a stable, versatile compound that maintains efficacy under varying processing conditions.

Applications Across Industries

Dipotassium phosphate CAS No. 7758-11-4 is prized for its multifunctional properties, enabling precise control in formulations:

• Food and Beverages: Acts as a pH regulator and sequestrant in soft drinks, milk products, and processed cheeses; serves as a potassium fortifier in low-sodium diets, compliant with GRAS status (E340(ii)).

  
  

• Pharmaceuticals: Employed as a buffering agent in oral suspensions, injectables, and effervescent tablets; supports electrolyte balance in nutritional supplements.

  
  

• Agriculture and Fertilizers: Provides soluble potassium and phosphorus for hydroponic systems and foliar sprays, promoting plant growth and yield enhancement.

  
  

• Personal Care and Cosmetics: Incorporated into shampoos and lotions as a stabilizer and humectant, preventing microbial growth and improving shelf life.

  
  

• Water Treatment and Industrial: Functions as a corrosion inhibitor in boiler feeds and a precipitant in wastewater clarification; used in fireproofing agents and detergents.

  
  

Selecting DKP contributes to sustainable practices by optimizing nutrient delivery and reducing the need for multiple additives.

Benefits of Choosing Dipotassium Phosphate CAS No. 7758-11-4

• pH Stability: Effectively buffers solutions in the alkaline range, preventing spoilage and maintaining product integrity during storage.

  
  

• Nutritional Enhancement: Delivers readily absorbable potassium (44%) and phosphorus (23%), supporting heart health and bone density without imparting off-flavors.

  
  

• Safety and Purity: Non-toxic with low irritancy (LD50 >2,000 mg/kg oral in rats); hypoallergenic and suitable for sensitive consumer groups.

  
  

• Process Efficiency: High solubility and rapid dissolution streamline manufacturing, lowering energy costs and improving throughput.

  
  

Dipotassium phosphate CAS No. 7758-11-4 stands out as a clean-label ingredient that aligns with clean eating trends and regulatory demands for transparency.

Frequently Asked Questions (FAQs)

What is dipotassium phosphate CAS No. 7758-11-4 used for in food processing?

Dipotassium phosphate CAS No. 7758-11-4 is utilized as an acidity regulator, emulsifier, and nutrient supplement in products like carbonated beverages and yogurt, helping to stabilize emulsions and adjust pH for optimal taste and texture.

Is dipotassium phosphate CAS No. 7758-11-4 water-soluble and suitable for beverages?

Yes, its exceptional water solubility ensures complete dissolution without residue, making it ideal for clear beverages where clarity and mouthfeel are critical.

What are the pH buffering capabilities of dipotassium phosphate CAS No. 7758-11-4?

It provides effective buffering around pH 9.0, resisting changes in acidic or alkaline environments, which is beneficial for preserving the stability of heat-processed foods.

Does dipotassium phosphate CAS No. 7758-11-4 comply with international food standards?

Indeed, it meets FCC, USP/NF, and EU E340 specifications, allowing safe use as a food additive up to 0.5–1.0% in most formulations without health risks.

How does dipotassium phosphate CAS No. 7758-11-4 differ from monopotassium phosphate?

Dipotassium phosphate (K₂HPO₄) is more alkaline and potassium-rich, suited for pH elevation, whereas monopotassium phosphate (KH₂PO₄) is acidic, better for lowering pH in fertilizers and baking powders.

Can dipotassium phosphate CAS No. 7758-11-4 be used in pharmaceutical buffering systems?

Certainly; its compatibility with APIs and controlled release properties make it a preferred choice for tablet coatings and syrups, ensuring uniform drug delivery.

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