中文
English
Русский
Technical Specifications
Basic chemical information
| Serial Number | Parameter Name | Specification Requirements |
|---|---|---|
| 1 | Main Content (as KH₂PO₄) | ≥ 98.0% |
| 2 | Potassium oxide (K₂O) | ≥ 20% |
| 3 | Phosphorus Pentoxide (P₂O₅) | ≥ 60% |
| 4 | Moisture (H₂O) | ≤ 0.2% |
| 5 | pH (1% aqueous solution) | 1.8 — 2.2 |
| 6 | Water Insoluble Matter | ≤ 0.1% |
| 7 | Chloride (as Cl) | ≤ 0.009% |
| 8 | Arsenic (as As) | ≤ 0.0005% |
| 9 | Heavy metals (as Pb) | ≤ 0.005% |
Physical Properties
| Project | Description |
|---|---|
| Appearance | White or colorless crystals |
| Water Solubility | Easily soluble in water, insoluble in organic solvents |
| Relative Density | 2.338 |
| Melting Point | 252.6℃ |
| pH (1% aqueous solution) | 1.8 — 2.2, highly acidic |
| Thermal Stability | Low thermal stability; prone to decomposition upon heating |
Chemical Properties
| Project | Description |
|---|---|
| Chemical Formula | KH₅(PO₄)₂ |
| Molecular Weight | 234 |
| CAS Number | 7778-77-0 |
| Aqueous solution properties | Aqueous solution is strongly acidic |
| Solubility | Easily soluble in water, insoluble in organic solvents |
Product Introduction
Product Overview
Acidic Potassium Phosphate (AKP) is a new type of highly efficient water-soluble fertilizer. Appearance is white or colorless crystals, easily soluble in water, insoluble in organic solvents. Chemical formula is KH₅(PO₄)₂, molecular weight 234, relative density 2.338, melting point 252.6°C. Aqueous solution is strongly acidic (pH 1.8-2.2).
Core Advantages
- High Phosphorus and PotassiumP₂O₅≥60%, K₂O≥20%, providing ample phosphorus and potassium nutrition for crops.
- Strong Acidic PropertyThe aqueous solution is strongly acidic, making it particularly suitable for alkaline soil improvement.
- Anti-Precipitation AdvantageIdeal for areas with hard water and high calcium/magnesium ion content, minimizing sediment formation.
- For Drip IrrigationFully water-soluble, residue-free, suitable for various drip and sprinkler irrigation systems.
- High PurityMain content ≥98%, low impurity content, safe to use.
- Fast Dissolving SpeedEasily soluble in water, dissolves quickly, and is convenient to use.
Main Applications
As a new type of fertilizer, it is suitable for alkaline soils, especially ideal for use as a drip irrigation fertilizer in areas with hard water containing high levels of calcium and magnesium ions.
Application Guidelines
Drip irrigation application (recommended)
Fully water-soluble formula, especially suitable for facility agriculture and precision fertilization, particularly in alkaline soils and hard water areas.
- Concentration: 1 — 3 g/L irrigation water
- Application rate: 3 — 8 kg/mu per application
- Frequency: Once every 7-15 days
- Note: Can be used in combination with nitrogen fertilizers; avoid simultaneous mixing with calcium or magnesium fertilizers.
Foliar Application
Rapidly replenishes phosphorus and potassium, promoting crop growth, especially suitable for peak demand periods.
- Dilution ratio: 1:500 — 1:1000
- Application rate: 30 — 60 L/mu
- Time: Morning or evening, avoid high temperatures
- Note: Best applied during flowering and fruit development stages.
Drip Irrigation
Apply via fertigation with irrigation water, suitable for supplementing phosphorus and potassium in cash crops like fruit trees and vegetables.
- Dosage: 5 — 10 kg/mu per application
- Dilution ratio: 1:100 — 1:200
- Time: Critical crop growth stages
- Note: Better results with small, frequent applications
Water Soluble Fertilizer Blending
Use as a high-phosphorus and high-potassium source in combination with nitrogen fertilizers to achieve balanced nutrition.
- Best used in combination with nitrogen fertilizers
- Addition Ratio: 5-15%
- Suitable for Melons, Fruits, Vegetables, Fruit Trees
- Can be used alone or in combination with other water-soluble fertilizer products.
Applicable crops and recommended dosage
| Crop Type | Representative Crops | Drip Irrigation Dosage | Foliar Spray Dosage | Application Period |
|---|---|---|---|---|
| Fruit Trees | Apple, Pear, Peach, Grape, Citrus | 5 — 8 kg/mu | 800 — 1200 times dilution | Flowering, young fruit, and expansion stages |
| Vegetables | Tomato, Cucumber, Pepper, Eggplant | 3 — 6 kg/mu | 1000 times dilution | Seedling, flowering, and fruiting stages |
| Melon and fruit crops | Watermelon, melon, strawberry | 3 — 5 kg/mu | 1000 times dilution | Vine extension, flowering, and expansion stages |
| Oilseed Crops | Rapeseed, peanut, soybean | 4 — 6 kg/mu | 1000 times dilution | Flowering and podding stages |
| Root and tuber crops | Potatoes, carrots, beets | 4 — 7 kg/mu | 1000 times dilution | Tuber Formation and Bulking Stages |
- Store in a cool, dry place away from direct sunlight. Use promptly after opening.
- The aqueous solution is strongly acidic; use with caution, ensure personal protection, and avoid direct contact with skin and eyes.
- Avoid mixing with alkaline fertilizers such as calcium or magnesium fertilizers to prevent precipitation.
- Compatible with most acidic fertilizers and pesticides, but small-scale testing prior to use is recommended.
- For foliar spray application, small-scale testing is recommended to confirm no phytotoxicity before large-scale use.
- Before drip irrigation use, it is recommended to filter the solution to prevent impurities from clogging the emitters.
- Low thermal stability, prone to decomposition when heated; avoid high-temperature storage and transportation.
FAQ
The main differences between the two lie in their chemical properties and application scenarios.
- Different Chemical FormulasAKP chemical formula is KH₅(PO₄)₂, MKP chemical formula is KH₂PO₄.
- Acidity StrengthAKP aqueous solution is strongly acidic (pH 1.8-2.2), MKP aqueous solution is weakly acidic (pH 4.3-4.7)
- Anti-Precipitation PerformanceAKP is less prone to forming precipitates with calcium and magnesium ions in hard water environments, whereas MKP easily forms calcium phosphate precipitates with calcium ions in hard water.
- Applicable ScenariosAKP is particularly suitable for alkaline soils and hard water areas, while MKP is suitable for neutral or acidic soils and soft water areas.
This is mainly related to the strong acidic properties of AKP:
- Neutralize AlkalinityAKP aqueous solution is strongly acidic, effectively neutralizing substances like calcium carbonate and magnesium carbonate in alkaline soils, thereby lowering soil pH.
- Anti-sedimentationIn hard water (containing high levels of calcium and magnesium ions), AKP is less likely to form precipitates such as calcium phosphate or magnesium phosphate with calcium and magnesium ions, preventing clogging in drip irrigation systems.
- Enhances nutrient availabilityIn alkaline soils, phosphorus is easily fixed into insoluble phosphates; the strong acidity of AKP can dissolve these fixed forms, enhancing phosphorus availability.
- Improve Soil StructureLong-term use can gradually improve alkaline soil structure, benefiting crop root development.
The application timing of AKP should be determined based on the crop growth cycle and nutrient requirements.
- Flower bud differentiation stagePromotes flower bud differentiation, improves flowering quality, and increases fruit set rate.
- Young fruit stagePromotes cell division and development in young fruits, laying the foundation for fruit expansion.
- Fruit Enlargement StagePromotes rapid fruit expansion and increases yield
- MaturityPromotes sugar accumulation in fruits and improves quality
- Root Development StagePromotes root growth and enhances crop stress resistance
It is recommended to schedule application based on the peak periods of phosphorus and potassium demand for the crop.
Store in a cool, dry, well-ventilated area in the original sealed packaging for a shelf life of24 MonthsStorage Precautions:
- Avoid direct sunlight and damp environments
- Avoid contact with sharp objects to prevent packaging damage
- Avoid storage with strong oxidizers and strong alkaline substances
- Keep dry and away from moisture; use promptly after opening.
- Note: Low thermal stability; decomposes easily when heated. Avoid high-temperature storage and transportation.
This product has been exported to multiple regions including Southeast Asia, the Middle East, and Europe; available export documents include:
- Commercial Invoice
- Packing List
- Certificate of Origin (CO)
- Phytosanitary Certificate
- SDS/MSDS (Multilingual versions)
- Quality Inspection Report (COA)
Send Inquiry
Please fill in the information below, and our business team willWithin 2 working daysReply to You.
Same Series Products
More water-soluble phosphorus and potassium fertilizer options to meet the needs of different crops and soils.
