Molecular formula: KH₂PO₄                                                                                          Molecular weight: 136.09
CAS NO.:7778-77-0                                                                                                       EINECS NO.:231-913-4

Properties:

White or colorless crystal, MKP is easily soluble in water, relative density at 2.34g/cm³, melting point at 252.6℃ to form K₂H₂P₂O₇, and at 400°C yields KPO₃.

Application:  

1. Agricultural field

A.  High-Purity Foliar/Drip Fertilizer, dual supply of P and K (P₂O₅: 52%, K₂O: 34%), promoting fruit expansion, color enhancement, and sugar accumulation.

B. Stress resistance enhancement: Improves crop tolerance to cold, drought, and pests/diseases (activates plant enzyme systems).

C. Specialized applications: Hydroponic nutrient solution, which provides impurity-free ion sources, preventing irrigation system clogging.

D. Flower/fruit preservation: Boosts fruit-setting rate when combined with boron fertilizers (e.g., citrus, grapes).

Advantages: Low salt index (≈8.4, no root burn); 100% water-soluble, zero residue.

2. Industrial and Materials field

A. Piezoelectric crystal materials: MKP crystals (KH₂PO₄) is used for laser frequency conversion (e.g., Nd:YAG laser doubling) and electro-optic modulators.

B.  Food grade: Acidity regulator (INS 340i), emulsifying salt (cheese products); Pharmaceutical buffer: Prepares stable buffer systems for injections/culture media.

C. Flame Retardant Synergist: Enhances fire resistance when compounded with ammonium polyphosphate (promotes charring, reduces toxic smoke).

3.New Energy and Environmental Protection

A. Precursor for Li-ion Battery Cathodes: Phosphorus source for synthesizing lithium iron phosphate (LiFePO₄), requiring ≥99.9% purity.

B. Water Treatment Agent

Usage Precautions

Agricultural restrictions: Avoid mixing with Ca/Mg fertilizers (causes precipitation); apply separately at 7-day intervals.

Crystal growth: Use ultrapure water for electronic-grade products; control crystallization temperature (40–60°C).

Packing and storage: In 25kg, 500kg, 1000kg,1200kg,1300kg net bag, store at a cool, dry and well ventilated place.

Shelf life: 3 years

Technical Specifications :

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