China Suppliers for High Purity Diammonium Phosphate (DAP) 21-53-0 Tech Grade - Fully Water Soluble Fertilizer Factory
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:
Lower insoluble content for cleaner solutions
Higher purity and clarity in solution
Reduced heavy metal impurities
Stable chemical composition throughout batches
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 — rapid dissolution without residue
Low insoluble matter — reduces clogging in irrigation or dosing systems
Stable solution behavior — suitable for tank mixing and liquid formulations
High nutrient concentration — efficient phosphorus and nitrogen delivery
Consistent particle structure — improved handling and storage stability
Application Scenarios
Used as a soluble nutrient source for drip irrigation and greenhouse cultivation in modern irrigation systems.
Used as a raw material in the production of NPK water-soluble fertilizers.
Applicable in flame retardants, fermentation nutrients, and chemical intermediates.
Can be integrated into foliar nutrition programs for precision nutrient delivery.
Nutrient Composition & Specifications
| Parameter | Value |
|---|---|
| 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 |
| Liquid System Compatibility | ✅ Better | ⚠️ Limited |
| Impurity Levels | ✅ Lower | ⚠️ Higher |
| Application Precision | ✅ More Precise | ⚠️ Less Precise |
Packaging and Supply
- 25 kg Bags
- Jumbo Bags (1 MT)
- Customized Packaging Available
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, higher solubility, reduced heavy metal content, and more consistent chemical composition — making it suitable for precision applications such as fertigation, industrial processing, and water-soluble fertilizer blending.
Yes. DAP 21-53-0 Tech Grade achieves 100% water solubility, meaning it dissolves completely without leaving residue. This is essential for use in drip irrigation systems, fertigation injectors, and liquid fertilizer formulations where undissolved particles can cause blockages.
Yes. Due to its very low water-insoluble content (≤ 0.05%), Tech Grade DAP is highly compatible with drip irrigation systems, micro-sprinklers, and precision dosing equipment. It minimizes the risk of clogging filters, emitters, and injector nozzles.
Beyond agriculture, Tech Grade DAP is used in flame retardant formulations, fermentation media as a nutrient source for microorganisms, and as a chemical intermediate in various industrial processes. Its high purity makes it preferable over standard grades in these sensitive applications.
Tech Grade DAP is available in 25 kg bags and 1 MT jumbo bags. Customized packaging options can also be arranged based on buyer requirements, including specific labeling, inner liner specifications, or pallet configurations for export shipments.
Yes. Tech Grade DAP is compatible with most water-soluble fertilizers and can be used in tank-mix applications. Its stable solution behavior and low impurity profile make it an ideal component for NPK water-soluble fertilizer blends and custom fertigation programs. It is recommended to conduct a jar test before large-scale mixing to confirm compatibility with specific formulations.