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Ammonium sulphate
(NH₄)₂SO₄
Ammonium sulphate is a fertilizer that supplies nitrogen and sulphur together. Its nitrogen is in ammonium form, which makes it widely used on alkaline soils.
Also known as: Ammonium sulfate, AS
Form and grades
It is sold as crystals and as granules. Crystal colour and size depend on the production route and usually do not decide fertilizer quality.
Technical specifications
| Parameter | Limit | Value |
|---|---|---|
| Nitrogen (N) | typical | 21% |
| Sulphur (S) | min | 23% |
| Moisture | max | 0.5% |
| Free acidity | max | 0.3% |
Data basis: Producer's specification. Final quality is confirmed by the certificate of analysis for each lot and, where agreed, by independent inspection at loading.
Technical data sheet (PDF)TDS-AS-01What to check before buying
- Nitrogen
- Sulphur
- Moisture
- Free acid
- Size distribution
- Colour
These figures depend on grade, producer and lot. They are read from the certificate of analysis of the lot offered, not from this page.
Uses
- Direct application in agriculture
- Blending with other fertilizers, which calls for the granular form
- Industrial uses, specified separately from fertilizer grade
Specifications and delivery
Grade, packaging, quantity and delivery terms are confirmed against the producer’s analysis and your enquiry.
Questions buyers ask
Crystalline or granular?
Granular suits mechanical spreading and blending with other granular fertilizers. Crystalline is enough for ordinary direct application or for dissolving.
What to send with an enquiry
- Grade or specifications
- Quantity and schedule
- Form: crystalline or granular
- Destination and the delivery term you need
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