Ammonium Sulfate Fertilizer
CAS Number: 7783-20-2
Ammonium sulfate is a granular nitrogen-sulfur fertilizer (21% N, 24% S) widely used in agriculture as a soil-applied nitrogen source and as a spray water conditioner for herbicide applications. As a water conditioner, ammonium sulfate chelates hard water cations (Ca²⁺, Mg²⁺, Fe³⁺) that antagonize glyphosate and other systemic herbicides, restoring full herbicide efficacy. It is particularly valuable in areas with hard irrigation water where herbicide performance would otherwise be compromised.
Technical Specifications
| appearance | White to off-white crystalline granule |
| moisture (%) | ≤0.5 |
| sulfur (S, %) | ≥24 |
| nitrogen (N, %) | ≥21 |
| free acid (H2SO4, %) | ≤0.05 |
| granule size (2–4mm, %) | ≥90 |
Applications
- Glyphosate herbicide hard water conditioner
- Nitrogen-sulfur soil fertilization for nitrogen-demanding crops
- Rice and canola sulfur deficiency correction
- Tank-mix water conditioner for systemic herbicides
- Acidifying fertilizer for high-pH soils
Key Features
- Dual nutrient source (N + S) in a single application
- Effective glyphosate water conditioner at 1.7 kg/100L spray water
- Low chloride content prevents salt damage in sensitive crops
- Granular and crystalline grades available for different application methods
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CAS Number
7783-20-2
Category
Agricultural / Crop ChemicalsAvailability
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