Molecular Formula: K₂HPO₄/K₂HPO₄.3H₂O                                                       Molecular Weight: 174.17/ 228.22                    

CAS No.: 7758-11-4/16788-57-1                                                                 EINECS No.:231-834-5

Properties: K₂HPO₄ (Anhydrous) is white powder, soluble in water easily and easy , insoluble in organic solvent; 

K₂HPO₄ (Tryhydrate) is white or colorless crystal,it is stable under common temperature.

Common Applications for DKPA and DKP.3H2O

A. Buffering Agent

Application Fields: Laboratory, Pharmaceutical, Food

Function: Maintains pH stability in systems (pH range: 7.0–9.0)

B. Nutrient Fortifier

Added to feedstuffs and fertilizers to supplement phosphorus and potassium elements.

Choose Trihydrate when: Applications require gentle buffering (food, pharmaceuticals, microbial culture)

Conducting precision experiments sensitive to rapid pH fluctuations (e.g., cell culture)

Choose Anhydrous when:High purity is critical (e.g., electronic-grade chemicals)

Rapid ion release is needed (foliar fertilizers, flame retardants)

Processes demand low-moisture conditions (desiccant synthesis)

Critical Note: The two forms are NOT interchangeable!
Substituting industrial-grade anhydrous compound in food/pharmaceutical applications may cause safety risks due to impurities or hygroscopicity.

Packing and storage: In 25kg, store at a cool, dry and well ventilated place.

Shelf life: 2 years

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