Ammonium Sulphate Fertilizer
Ammonium Sulphate (AS) is a dual-nutrient fertilizer delivering 21% nitrogen and 24% sulphur. Its acidic reaction makes it the ideal choice for alkaline soils, sulphur-deficient crops, and situations where rapid nitrogen availability and sulphur supplementation are both required for optimal protein synthesis and crop quality.
Why Choose Ammonium Sulphate?
Ammonium Sulphate is the go-to fertilizer when both nitrogen and sulphur are needed simultaneously. Its unique properties make it especially valuable in specific soil and crop conditions where other nitrogen sources fall short.
- Dual nutrient delivery: 21% nitrogen + 24% sulphur in every application
- Acidic reaction helps lower soil pH in alkaline conditions
- Ammonium nitrogen resists leaching better than nitrate sources
- Essential sulphur improves protein synthesis and crop quality
- Excellent for nitrogen top-dressing in rice and flooded crops
- Low hygroscopicity ensures excellent storage stability
Technical Specifications
| Nitrogen (N) | 21.0% minimum |
|---|---|
| Phosphorus (P‾2O‾5) | 0% |
| Potassium (K‾2O) | 0% |
| Sulphur (S) | 24.0% minimum |
| Moisture | 1.0% maximum |
| Appearance | White to off-white crystalline granules |
| Granule Size | 2-4mm (90% minimum) |
| Solubility | Highly soluble in water (760 g/L at 20C) |
| Origin | Thailand |
| Certification | ISO 9001, SGS Certified |
Packaging & Export Options
Flexible packaging solutions designed for international shipping and local distribution.
50kg PP Woven Bags
Standard export packaging with PE liner. 25-27 MT per 20ft container. Moisture-resistant and stackable.
25kg Retail Bags
Smaller bags for distributor retail markets. Custom printing with your brand available for 100+ MT orders.
1000kg Jumbo Bags
FIBC bulk bags with UV stabilization. 25 bags per 20ft container. Ideal for bulk buyers with bag-breaking equipment.
MOQ: 25 metric tons (1 x 20ft container) | Lead Time: 10-15 days | Shipping: FOB Bangkok / CIF available
Request Ammonium Sulphate PricingRecommended Crops & Application
Ammonium Sulphate excels in alkaline soils, sulphur-deficient regions, and flooded crop conditions.
Apply as top-dressing in flooded rice fields where ammonium nitrogen is preferred over urea. Use in alkaline soils to gradually lower pH while supplying essential N and S. Band placement maximizes efficiency in dryland crops.
Why Buyers Trust Thai Fertilizer
Over 15 years of reliable fertilizer export experience to 40+ countries.
Thailand Manufacturer
Direct from ISO-certified Thai factory with no middlemen markup
Bulk Supply
Container and break-bulk shipments from 25 MT to 5,000+ MT
Fast Delivery
10-15 day production lead time plus reliable ocean freight
Competitive Pricing
Volume discounts and long-term contract rates available
Frequently Asked Questions — Ammonium Sulphate
Ammonium Sulphate (21% N, 24% S) is a nitrogen-sulphur fertilizer used to supply both primary and secondary nutrients. It is ideal for sulphur-deficient soils, rice paddies, and crops that require acidic soil conditions.
Yes. Ammonium Sulphate has an acidifying effect on soil, making it beneficial for alkaline soils and crops that prefer slightly acidic conditions such as tea, coffee, and blueberries. It is not recommended for already acidic soils without liming.
Ammonium Sulphate contains 21% nitrogen (N) in the ammonium form and 24% sulphur (S). The ammonium nitrogen is less prone to leaching than nitrate nitrogen, making it efficient for flooded rice cultivation.
Yes. Thai Fertilizer exports Ammonium Sulphate in 50kg bags and bulk containers from Laem Chabang Port, Thailand. We serve buyers in Africa, Asia, and South America with competitive pricing and optional third-party inspection.
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