Bulk supply · Industrial Salts & Inorganics
Ammonium sulphate in caprolactam and steel grades, 50 kg bags and bulk, for nitrogen and sulphur fertiliser, fermentation and industrial use. Price on request against your quantity and delivery point.
Also searched as: ammonium sulphate price, ammonium sulphate fertilizer price, ammonium sulfate, AS fertiliser, (NH4)2SO4
What we supply
Ammonium sulphate is the nitrogen fertiliser people buy for the sulphur. The Fertiliser (Control) Order sets its minimum at 20.6 per cent ammoniacal nitrogen, less than half what urea carries, so on nitrogen alone it loses on freight every time. What it also carries is sulphur — a minimum of 23 per cent under the same schedule, as immediately plant-available sulphate — and sulphur deficiency is now widespread in Indian soils after decades of high-analysis fertilisers that contain none. That is the real reason it moves.
It is almost never made on purpose. The material in the Indian market is a by-product: caprolactam grade comes off nylon-6 production, and steel grade off the ammonia liquor of coke ovens and off pickling lines. The two behave the same agronomically but look different — caprolactam material is the whiter, more uniform crystal, steel material often carries colour and a touch more free acid. The Fertiliser (Control) Order recognises this: against a general free-acidity limit of 0.025 per cent as H2SO4 it allows 0.04 per cent for material obtained from by-product ammonia and by-product gypsum.
Grades & packing
These are the formats we most commonly supply. Other grades, packing sizes and pack marking are available — ask at the enquiry stage.
| Product | Formula | Grade | HSN | Packing |
|---|---|---|---|---|
| Ammonium Sulphate | (NH₄)₂SO₄ | 20.6% N · 23% S min (FCO) | 3102 21 00 | 50 kg bag · bulk |
No tested values are published here. The certificate of analysis for the batch actually loaded travels with the despatch documents, and a representative COA and the safety data sheet go out before any commercial discussion.
Applications
Straight fertiliser and a sulphur carrier in bulk blends and complexes, where supply is regulated (see below).
Nitrogen source in yeast, enzyme, antibiotic and amino-acid fermentation media.
Chloramine formation with chlorine, for a longer-lasting residual in distribution networks.
Dye-bath assistant and a component of tanning and retanning liquors.
Component of fire-retardant treatments for timber, textiles and paper.
Electrolyte component and a source of ammonium ion in plating baths.
Handling & storage
Worth reading before you order rather than after. If any of this is a problem at your site, tell us — it usually changes what we would quote.
Price
Ammonium sulphate is a by-product, so its price follows caprolactam and steel production and the availability of imported material rather than any dedicated manufacturing cost. Grade, colour, crystal size and bag versus bulk set the rest. We quote per MT in writing, landed, with a stated validity.
Questions
Urea carries about 46 per cent nitrogen against a 20.6 per cent minimum here, so for nitrogen alone urea is cheaper to buy and to freight. Ammonium sulphate wins where the crop or the soil also needs sulphur, because it supplies it as immediately available sulphate, and where an acidifying effect is wanted on alkaline soil. It is a sulphur decision, not a nitrogen one.
The process they come off. Caprolactam grade is a by-product of nylon-6 manufacture and is usually the whiter, more uniform crystal; steel grade comes off coke-oven ammonia liquor and pickling lines and often carries colour and slightly more free acid. Agronomically they do the same job.
No — Velora is a bulk supplier and trader, not a manufacturer. Ammonium sulphate is sourced from established Indian producers and from imported material, and supplied in 50 kg bags and in bulk.
Ammonium sulphate is a by-product of caprolactam and steel production, so the price follows those industries and the availability of imported material. We quote per MT, landed, with a stated validity.
No. They are different chemicals with different regulatory positions — ammonium sulphate is not an oxidiser and is not a controlled explosive precursor. Do not treat handling or storage advice for one as applying to the other.
The HSN code for ammonium sulphate is 3102 21 00 (Ammonium sulphate, nitrogenous fertiliser). Chapter 31 Note 2(a)(iv) puts ammonium sulphate here “whether or not pure”, so caprolactam-grade, steel by-product and chemically pure material all share the code regardless of whether it is used as a fertiliser. Packages of 10 kg gross or less fall under 3105 10 00 instead. The GST rate, unlike the code, does turn on whether the material is clearly not to be used as a fertiliser — confirm the rate with your own tax adviser. Source: the Indian customs tariff as listed in the GST HSN directory, checked September 2026.
Documentation
Not classified as a dangerous good for transport, so no TREM card is required. The safety data sheet still applies.
| Document | What it covers for ammonium sulphate | When you get it |
|---|---|---|
| Product specification | Download the product specification sheet for ammonium sulphate (PDF) — CAS, formula, grade supplied against, packing, HSN and transport classification. Carries no test results and certifies no batch. | Download now |
| Safety data sheet (MSDS/SDS) | Download the 16-section GHS safety data sheet (PDF) — compiled from PubChem, the ECHA CLP inventory and ILO safety cards. The producer’s sheet for the lot supplied governs and is issued with the consignment. | Download now |
| Representative COA | A producer’s representative certificate of analysis for the grade you specify, obtained at enquiry stage so your QC can assess ammonium sulphate against your own specification | Before commercial terms |
| Batch COA | Tested values for the batch actually loaded on your vehicle | With despatch documents |
| Technical data sheet | Handling, storage and materials-of-construction guidance | On request |
We do not publish blank certificates to download. A certificate of analysis belongs to a batch, so a generic one tells you nothing about the material on your vehicle — and the safety data sheet is the producer’s document for the grade actually quoted. Ask and both are emailed, usually the same working day.
Related lines
Sourcing desk
You will get a written offer for ammonium sulphate with landed price, packing, lead time and a stated validity — not a price that changes on the phone.