High-Purity Diammonium Phosphate (DAP) 21-53-0 Tech Grade from China Suppliers | Factory Direct Fertigation Solutions
Product Overview
Diammonium Phosphate (DAP) 21-53-0 Tech Grade is a high-purity, fully water-soluble phosphate material designed for industrial processing, fertilizer blending, and advanced fertigation systems. Unlike conventional granular Diammonium Phosphate used in bulk agriculture, this Tech Grade Diammonium Phosphate (DAP) is produced in crystalline form with strict control over solubility, impurity levels, and stability in solution.
This product is developed to meet the growing demand for water-soluble phosphate sources in modern agricultural and industrial applications, where rapid dissolution, compatibility, and consistency are critical. As a premium Diammonium Phosphate (DAP), it provides a reliable source of nitrogen and phosphorus for precision nutrient delivery systems.
Production Process and Quality Control
Tech Grade Diammonium Phosphate (DAP) is manufactured through a controlled neutralization process using purified phosphoric acid and ammonia. Compared with standard agricultural-grade Diammonium Phosphate, the Tech Grade DAP undergoes additional purification and crystallization steps to ensure:
Minimizes residue in solution for clean, efficient use.
Crystal-clear solution performance in every application.
Meets strict quality standards for safe use.
Consistent batch-to-batch quality you can rely on.
The result is a Diammonium Phosphate (DAP) that performs consistently in high-demand applications, especially where filtration systems, injectors, or mixing tanks are sensitive to impurities.
Key Performance Features
Diammonium Phosphate (DAP) 21-53-0 Tech Grade is engineered for performance rather than bulk supply. Its core advantages include:
- Fully water soluble, ensuring rapid dissolution without residue
- Low insoluble matter, reducing the risk of clogging in irrigation or dosing systems
- Stable solution behavior, suitable for tank mixing and liquid formulations
- High nutrient concentration, providing efficient phosphorus and nitrogen delivery
- Consistent particle structure, improving handling and storage stability
Application Scenarios
Used as a soluble nutrient source for drip irrigation and greenhouse cultivation in modern irrigation systems.
Serves as a key raw material in the production of NPK water-soluble fertilizers.
Applied in flame retardants, fermentation nutrients, and chemical intermediates.
Integrated into foliar nutrition programs for targeted, precision nutrient delivery.
Nutrient Composition
| Parameter | Specification |
|---|---|
| Nitrogen (N) | ≥ 21% |
| Phosphorus (P₂O₅) | ≥ 53% |
| Water Solubility | 100% |
| pH (1% solution) | 7.5 – 8.5 |
| Moisture | ≤ 0.3% |
| Water-Insoluble Matter | ≤ 0.1% |
Product Advantages vs Conventional DAP
| Feature | Tech Grade DAP | Conventional DAP |
|---|---|---|
| Dissolution Speed | ✅ Faster | ⚠️ Slower |
| Compatibility in Liquid Systems | ✅ Better | ⚠️ Limited |
| Impurity Levels | ✅ Lower | ⚠️ Higher |
| Precision Application | ✅ More Precise | ⚠️ Less Precise |
Packaging and Supply
Frequently Asked Questions (FAQ)
Tech Grade DAP undergoes additional purification and crystallization steps compared to standard agricultural-grade DAP. This results in lower impurity levels, reduced insoluble content, and full water solubility, making it ideal for precision fertigation, industrial use, and water-soluble fertilizer blending.
Yes. DAP 21-53-0 Tech Grade is 100% water soluble. It dissolves rapidly and completely, leaving no residue — making it safe and efficient for use in drip irrigation systems, injectors, and mixing tanks.
Absolutely. Due to its low water-insoluble content (≤ 0.05%) and full solubility, Tech Grade DAP is highly compatible with drip irrigation, greenhouse fertigation, and precision dosing equipment, minimizing the risk of clogging or equipment damage.
Beyond agriculture, Tech Grade DAP is used in flame retardant production, fermentation nutrient media, and as a chemical intermediate. Its high purity and stable composition make it well-suited for industrial processing environments.
Tech Grade DAP is available in 25 kg bags and 1 MT jumbo bags. Customized packaging options are also available to meet specific logistics or customer requirements. Please contact us for tailored packaging solutions.
A 1% solution of Tech Grade DAP has a pH of 7.5–8.5, which is slightly alkaline. This pH range is important for compatibility with other fertilizers in tank mixes and ensures optimal nutrient availability for most crops and plant systems.