Monopotassium Phosphate
SEED MKP Product Details
Monopotassium Phosphate, also known as MKP, is a high-efficiency phosphorus-potassium binary compound fertilizer and an important industrial and food additive. It is free of nitrogen, making it the ideal nutrient source during the reproductive stages of plant growth (flowering and fruiting). Designed for modern agriculture, it ensures rapid nutrient uptake, improves crop yield, and enhances the quality and shelf-life of fruits and vegetables.
- Chemical Name: Monopotassium Phosphate (Potassium Dihydrogen Phosphate)
- CAS Number: 7778-77-0
- Molecular Formula: KH₂PO₄
- Main Content: ≥ 98.0%
- pH Value: 4.2-4.7 (1% aqueous solution)
SEED MKP Product Parameters
Phosphorus (P₂O₅P₂O₅): ≥ 52.0%
Potassium (K₂OK₂O): ≥ 34.0%
Heavy metal (Pb), mg/kg ≤0.008
Fe, w/% ≤0.008
As, w/% ≤0.015
Ph(10g/L)≤4.4-4.7
Water insoluble matter, w/% ≤0.2
Chloride (as Cl), w/% ≤0.2%
Solubility: Very soluble in water; aqueous solution is weakly acidic (pH of 1% solution is about 4.4–4.7)
Characteristics: Chlorine-free, nitrogen-free, low salt index, safe for crops and soil
Other:
Storage Conditions: Store in a cool, dry, and well-ventilated warehouse. Keep away from moisture to prevent caking.
Packaging: 25kg woven bags with PE inner liner, or customized packaging.
SEED Potassium Dihydrogen Phosphate Product Advantages
SEED MKP Product Advantages
100% Water Soluble
Dissolves rapidly and completely in water, making it perfectly suited for drip irrigation, fertigation, and foliar spraying without clogging nozzles.
High Nutrient Density
Contains 86% combined phosphorus and potassium, providing a highly concentrated dose of essential macronutrients.
Safe for Plants
Has a very low salt index and is completely free of chlorine, sodium, and heavy metals, eliminating the risk of leaf burn or soil salinization.
Improves Crop Quality
Promotes root development, accelerates flower bud differentiation, increases fruit size, and enhances the color, sugar content, and shelf life of the harvest.
SEED MKP Product Application
SEED MKP Frequently Asked Questions
What makes Potassium Dihydrogen Phosphate (MKP) different from standard NPK fertilizers?
Unlike standard NPK fertilizers, Potassium Dihydrogen Phosphate (MKP) contains 0% Nitrogen. It is a highly concentrated source of just Phosphorus (≥ 52%) and Potassium (≥ 34%). This makes it the perfect fertilizer for the reproductive stages of plant growth—such as flowering and fruiting—where adding nitrogen would cause unwanted leafy growth at the expense of fruit development.
Can MKP be used as a foliar spray, and what are the benefits?
Yes, MKP is exceptionally well-suited for foliar feeding. Because it is 100% water-soluble and has a very low salt index, it is rapidly absorbed by the plant’s leaves without causing leaf burn. Foliar application of MKP provides a fast-acting nutrient boost, quickly correcting phosphorus and potassium deficiencies during critical growth stages.
How does MKP improve crop yield and fruit quality?
The high phosphorus content in MKP promotes strong root development and accelerates flower bud differentiation, leading to more blossoms. The high potassium content is crucial for the transport of sugars and starches within the plant. Together, they increase fruit size, enhance color, boost sugar content (Brix levels), and improve the overall firmness and shelf-life of the harvested crop.
Is Potassium Dihydrogen Phosphate compatible with other fertilizers and pesticides?
MKP is highly compatible with most common fertilizers and agricultural pesticides. In fact, its slightly acidic nature can help buffer the pH of spray solutions, improving the stability and efficacy of certain pesticides. However, it should not be mixed with fertilizers containing unchelated calcium or magnesium, as this will cause a chemical reaction that creates insoluble precipitates.
Can MKP be used in hydroponic and drip irrigation systems?
Absolutely. Because SEED Potassium Dihydrogen Phosphate is highly pure and leaves zero insoluble residue, it is ideal for fertigation and hydroponic systems. It dissolves completely and cleanly, ensuring that drip emitters, nozzles, and irrigation lines remain free of clogs while delivering precise, readily available nutrition directly to the plant’s root zone.
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