| Customization: | Available |
|---|---|
| CAS No.: | 7783-20-2 |
| Formula: | (Nh4)2so4 |
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Ammonium sulfate, (NH4)2SO4, is an inorganic salt commonly used as a fertilizer due to its high nitrogen (21%) and sulfur (24%) content, essential for plant growth.
It appears as white to beige crystals or granules, is highly soluble in water, and has a slightly acidic pH. It's produced industrially by reacting ammonia (NH3) with sulfuric acid (H2SO4), often as a byproduct of processes like coke production or caprolactam synthesis.
Ammonium sulfate granules are the solid, granular form of ammonium sulfate ((NH4)2SO4), an inorganic salt widely used as a fertilizer due to its high nitrogen (21%) and sulfur (24%) content.
The granular form is preferred in agriculture for its ease of handling, uniform application, and slower release compared to finer powders.
Key Characteristics:
Appearance: White to beige granules, typically 1-4 mm in size, depending on production specifications.JINGFENG can OEM its apperance as different color granular.
Solubility: Highly soluble in water (74.4 g/100 mL at 20°C), though granules dissolve more slowly than powder.
Density: ~1.77 g/cm³ for the compound, though granule bulk density varies (0.9-1.1 g/cm³).
PH: Aqueous solutions are slightly acidic (pH ~5-6).
Applications and Uses Mainly used as a fertilizer, ammonium sulfate granules are also applied in industrial processes, food additives, and laboratory settings, such as protein precipitation in biochemistry.
Key Points
- Research suggests ammonium sulfate granules are commonly used as fertilizers, with key properties including 21% nitrogen and 24% sulfur content.
- It seems likely that their granule size typically ranges from 1-4 mm, making them suitable for uniform spreading in agriculture.
- The evidence leans toward their high solubility (74.4 g/100 mL at 20°C) and slightly acidic pH (5-6), which can affect soil conditions.
Physical and Chemical Properties
The physical and chemical properties of ammonium sulfate granules are critical for their application and effectiveness.
Below is a table summarizing these properties:
| Element/Property | Percentage/Value | Notes |
| Nitrogen (N) | 21% | Derived from (NH4)2; essential for plant growth. |
| Sulfur (S) | 24% | From SO4²; supports sulfur-deficient soils. |
| Hydrogen (H) | 6.06% | From 8 H atoms in (NH4)2SO4. |
| Potassium(K2O) | 2% | JINGFENG Formular |
| Oxygen (O) | 48.48% | From 4 O atoms in SO4²-. |
| Purity (Fertilizer-Grade) | 99-99.5% | May contain trace moisture or salts. |
| Purity (Reagent-Grade) | 99.9-100% | Minimal impurities (e.g., <0.01% heavy metals). |
Appearance and Granule Size: The granular form ranges from white to beige, with a typical size of 1-4 mm, as noted by American Plant Food and Ravensdown. This size ensures ideal bulk blending and uniform spread, reducing dust and caking issues.
Solubility and pH: With a solubility of 74.4 g/100 mL at 20°C, ammonium sulfate granules dissolve readily in water, making them effective for soil application. Their aqueous solutions have a pH of 5-6, contributing to soil acidification, which is beneficial for alkaline soils.
Density: The compound density is 1.77 g/cm³, while the bulk density for granules is 0.9-1.1 g/cm³, affecting storage and handling practices.
Safety: Generally safe in small amounts but can irritate skin, eyes, or respiratory system if mishandled. Ingestion of large quantities may cause nausea or gastrointestinal distress. Environmental concern: Overuse in agriculture can lead to soil acidification or waterway eutrophication.
Advantages for Plants
High Nitrogen Supply: Provides 21% nitrogen, a critical nutrient for vegetative growth, promoting healthy leaf and stem development.
Supports crops like wheat, corn, and soybeans, enhancing chlorophyll production and photosynthesis.
Sulfur Nutrition: Supplies 24% sulfur, essential for protein synthesis, enzyme function, and forming amino acids like cysteine and methionine.
Addresses sulfur deficiencies in soils, particularly in high-yield farming areas (e.g., Asia-Pacific, per market data).
Soil Acidification: Granules have a slightly acidic pH (5-6 in solution), ideal for correcting alkaline soils (pH >7), improving nutrient availability for plants like blueberries or potatoes.
Enhances uptake of micronutrients like iron and zinc in alkaline conditions.
Granular Form Benefits: Uniform 1-4 mm granules ensure even distribution via spreaders, reducing nutrient waste and ensuring consistent delivery to plant roots.
Slower nutrient release compared to powders minimizes leaching, especially in sandy soils.
Low Ammonia Volatilization: Compared to urea, ammonium sulfate has lower ammonia loss to the atmosphere, making it suitable for surface application and flexible timing (per Ravensdown data).
Compatibility with Blends: Easily blended with other fertilizers (e.g., NPK mixes), allowing tailored nutrition for specific crops or soil types.
Versatility Across Crops: Effective for a wide range of crops, including cereals, oilseeds, and pastures, particularly in sulfur-deficient regions.
Supports both direct soil application and fertigation systems due to high solubility (74.4 g/100 mL at 20°C).
| Packaging Type | Size | Primary Use |
|---|---|---|
| Woven PP Bags | 25 kg, 50 kg | Small to medium-scale farming |
| Bulk Bags (FIBC) | 500-1,000 kg | Large-scale agriculture, industrial |
| Bulk Shipments | 20-30 metric tons | Commercial farming, manufacturing |
| Drums/Pails | 25-50 kg | Laboratory, specialty applications |
Safety and Handling Packaging includes warnings about irritation risks (skin, eyes, respiratory) and storage instructions (keep dry, avoid extreme heat).
Bulk bags often have lifting loops for safe handling with forklifts or cranes.
JINGFENG Humic Acid - Innovating with Humic Acid Solutions
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