Monopotassium Phosphate (MKP) is a highly efficient and fully water-soluble fertilizer and a versatile functional ingredient, renowned for its high phosphorus and potassium content, acidic nature, and excellent compatibility. It serves critical roles in high-value agriculture, food processing, and industrial applications. It is produced by the precise reaction of phosphoric acid with potassium hydroxide.

❋ Aliases: Potassium dihydrogen phosphate, MKP
❋ English Name: Monopotassium Phosphate
❋ Chemical Formula: KH₂PO₄
❋ Molecular Weight: 136.09
❋ CAS Number: 7778-77-0

Key Properties: High water solubility, acidic solution, high P₂O₅ and K₂O content, excellent source of phosphorus and potassium without nitrogen.

Advanced Application Scenarios

1. "High-Efficiency Nutrient Source" in Precision Agriculture and Horticulture

• A key component in fertigation and foliar feeding systems for high-value crops (greenhouses, hydroponics, fruits), providing readily available phosphorus for energy transfer and root development, and potassium for quality and stress tolerance.

• Its nitrogen-free nature makes it ideal for application at specific growth stages where nitrogen is not desired or needs to be limited.

2. "Acidulant and Buffer" in Food & Beverage Industry

• Used as an acidulant in jellies and jams, providing a tart taste and helping in gelling.

• Serves as a buffering agent to control and stabilize pH in various food systems, including dairy products and meat processing.

3. "Nutrient and Buffer" in Biotechnology and Pharmaceuticals

• An essential component of buffer systems in molecular biology (e.g., PBS - Phosphate Buffered Saline) and cell culture media, maintaining a stable physiological pH.

• Used as a source of phosphorus and potassium in microbial fermentation processes.

4. "Fire Retardant and Additive" in Industrial Applications

• Acts as an effective fire retardant in certain polymers, textiles, and wood treatments, promoting char formation.

• Used as a dispersant in ceramic and pigment industries and as a starting material for the production of other potassium phosphates.

Technological Breakthroughs and Sustainable Development

Production and Purity

• Implementation of advanced crystallization control and purification technologies (e.g., multi-stage recrystallization, ion exchange) ensures a product with high purity and low levels of chloride, heavy metals, and other impurities, suitable for agricultural, food, and pharmaceutical grades.

• Precise control of the neutralization reaction and drying conditions guarantees consistent composition and physical properties.

Sustainability and Efficiency

• The production process is designed for high atom efficiency, minimizing waste generation.

• Its high solubility and nutrient efficiency contribute to reduced environmental impact in agriculture by minimizing leaching risks compared to some less soluble fertilizers when used appropriately.

Quality and Compliance

• Rigorous quality control ensures compliance with international standards such as FAO for fertilizers and FCC for food grade.

• Certifications like ISO 9001 and GMP (for relevant grades) guarantee consistent quality for different application markets.

Technical Advantages

Quality Advantages

• Assay (KH₂PO₄): ≥ 99.0% (High Purity Grade)

• P₂O₅ content: ≥ 52%, K₂O content: ≥ 34%

• Heavy metals (as Pb): ≤ 10 ppm (Agricultural Grade), ≤ 2 ppm (Food Grade)

Physical Characteristics

• Appearance: White crystalline powder or granules.

• Solubility: Highly soluble in water (approx. 25 g/100 mL at 25°C).

• pH of 1% solution: ~4.5 (acidic).

Application Support

• Provides agronomic recommendations for different crops and growth stages, especially for fertigation and foliar application.

• Offers technical data and guidance for formulation in food, pharmaceutical, and industrial applications, including compatibility and usage levels.