Ammonium Sulfate Market Report — Week 38, 2026

This is our full market report for the week of 14-18 September 2026 — the week China’s ammonium sulfate export transition period ended and the market’s mood turned.

The short version: standard material firmed to $195-205/t fob, compacted reached $210-225/t fob, and the reason had as much to do with what did not happen as what did.

The week in numbers

Domestic Chinese values moved more sharply than the export assessment, which tells you where the pressure came from:

What actually drove the week: the 15 September rule change

Going into Monday, the market was cautious. Buyers and traders were uncertain what would happen when China’s ammonium sulfate export inspection transition period ended on 15 September. The widespread fear was a hard stop on shipments. Speculative purchasing pulled back and coke-grade cargoes came under pressure.

What actually happened was the opposite of a stoppage. Non-self-regulated enterprises that had already received CIQ approvals remained able to load and export, with existing approvals valid within their validity window. The market’s core fear did not materialise.

That single clarification flipped sentiment within days. Once it was clear that existing order documentation could still clear customs, sellers moved from caution to holding back stock and firming offers. Coke-grade auction prices rose sharply across multiple regions and caprolactam-grade followed.

The lesson for buyers is worth stating plainly: the sharpest moves in this market come from policy clarification, not from demand shifts. The price change this week was a sentiment correction as much as a physical one.

Supply: the real constraint

Even before the rule change clarified, availability was tight — and it still is.

Southern Chinese producers have largely exhausted their allocated export volumes for this round. Northern producers continue to hold and offer some cargoes, but availability from that side is limited, and offers cluster around the $200/t fob level.

This is the key thing to understand about the current market: price is not the binding constraint — allocation is. A competitive quotation that cannot be allocated for your loading window is worth less than a higher quotation that loads on time.

One procedural detail that matters for planning: the 15 September deadline has passed, but enterprises holding prior CIQ approvals can still export. Most of them, however, have already sold the bulk of their volumes. So the channel exists, but the tonnage through it is limited.

Demand: Brazil is carrying the market

Brazil is the destination doing the work this week, and the reason is seasonal and structural at the same time.

Seasonally, September marks the start of soybean planting preparation, and August through December is the traditional peak window for granular ammonium sulfate into Brazil.

Structurally, Brazilian soils are notably sulfur-deficient, and with urea priced at elevated levels, growers increasingly favour ammonium sulfate as a cost-effective combined sulfur-nitrogen source. Fertilisers compete on cost per unit of nutrient, and on that comparison ammonium sulfate looks attractive against high-priced urea.

The practical result: Brazilian buyers accelerated order-taking once the export-rule picture cleared, and domestic granulation economics improved markedly as the spread between Chinese granulation cost and delivered Brazilian value widened. That stimulated raw-material purchasing by Chinese compactors, which is precisely what pushed the coke-grade and steel-grade auction prices higher.

For buyers, that chain — Brazilian demand → granulation margin → Chinese compacting demand → domestic raw material prices → export offers — is the causal path worth watching. It moves faster than the published export assessment does.

Southeast Asia, by contrast, is in a seasonal lull. The region’s July-September application season is closing, buyers are largely executing existing contracts, and new enquiries are scarce. Indonesia, Malaysia and Vietnam take mostly crystalline material, largely for compound fertilizer production, and large-scale restocking interest is weak. Rising freight costs have added to the reluctance.

The regional split matters: Brazil is pulling the market; Southeast Asia is not. If you are buying crystalline material for Southeast Asia, you are not competing with the same buyers driving this week’s headlines.

Where the volume actually traded

Reported business gives a truer read than assessment ranges alone:

• 5,000t standard at around $195/t fob, October shipment to Brazil — the clearest read on clearing level for standard material into Brazil
• 6,000t MMA-grade at $160/t fob, November shipment to Southeast Asia
• 8,000t LFP-grade at $180/t fob, October shipment to Southeast Asia
• 5,000-10,000t compacted at $220-225/t fob, October shipment to Brazil; a southern supplier separately sold at $210/t fob
• 10,000-12,000t standard caprolactam-grade offered at around $240/t cfr Klang, Malaysia, October loading
• 3,000t to Germany and 4,000t to the UK by a European producer, likely October shipment
• Chinese compacted offered at €350-360/t fca northwest European ports, duties included

Notice the range: $160/t to $225/t for material all called “ammonium sulfate.” MMA-grade, LFP-grade, standard caprolactam-grade and compacted are different products from different production routes serving different end uses. They do not substitute for one another. Treating ammonium sulfate as a single commodity with one price is the most consequential mistake a buyer can make in this market — our production source guide sets out exactly how the routes differ.

The India tender worth watching

Importer Fact’s 28 August tender — up to 600,000t of caprolactam-grade ammonium sulfate under a two-year supply arrangement — has narrowed from eight offers to four valid ones, with four rejected. Offer validity was extended to 19 September and awards have not yet emerged.

Bids are structured as a variable discount or premium against the average of the previous four weeks’ published standard caprolactam-grade fob China assessments, which ties the pricing formula directly to the index rather than fixing a level.

Why this matters: 600,000t over two years is a large enough volume to absorb meaningful supply and to influence the shape of the export market. Its outcome will be a signal on where large-scale buyers believe the market is heading.

Europe: a structurally tight fourth quarter

Europe deserves separate attention because the supply picture there is tightening for reasons independent of China’s policy.

Standard caprolactam-grade was assessed at €270-275/t fob northwest Europe, with concluded UK sales at €275/t fob and small truckloads at €285/t fca. Granular held at €330-350/t fob, with demand picking up at the lower end.

More significant is what is coming. At least three trading firms are each set to bring a panamax-sized cargo of Chinese compacted ammonium sulfate into northwest Europe in coming months, totalling around 200,000t — offered at €350-360/t fca with duties included.

Yet even European producers expect the fourth-quarter supply balance to stay tight, with Domo out of the market. That combination — significant inbound volume against a still-tight balance — suggests European buyers should be planning their fourth-quarter requirements earlier rather than later.

Smaller markets showed a similar tone: Turkey demand is picking up, with standard offered at $260/t cfr and compacted spanning $270-290/t cfr. Mexico has an importer in the market for around 30,000t of standard and compacted material for east coast delivery — and notably, some cash crops require ammonium sulfate specifically for its sulfur content regardless of price.

What buyers should do now

Secure allocation before you negotiate price. The binding constraint this month is availability. Establish that tonnage exists for your loading window, then work the commercial terms.

Match grade to destination, not to price. Brazilian programmes want compacted or granular. Southeast Asian and ANZ programmes generally want crystalline. Buying the wrong grade to chase a lower number costs more in rework than it saves.

Plan around the end-September allocation decision. The second round is expected by then. If it arrives with volume and includes steel-grade eligibility, current tightness eases. If it is delayed or restricted, expect supply to stay thin into the fourth quarter. Either way, it is the largest single variable for Q4 planning.

Confirm specification against the lot COA. Nitrogen assay varies with production route, and granular compacted from mixed by-product sources carries a different guaranteed figure than crystalline from a single high-assay route. Establish what your application requires, then verify the lot documentation against it — never assume from the grade name.

Treat CFR figures as parcel-specific. Freight is the most volume-sensitive component of any delivered price. A rate quoted for one parcel size does not transfer to another.

Build flexibility into downstream commitments. With the allocation round unresolved, loading windows remain subject to allocation availability. Buyers scheduling blending runs, distribution dates or credit-document deadlines should allow for that.

Next week’s watch list

Absent a change in the allocation position, the current supply structure does not obviously support a short-term price correction. Buyers with fixed programmes are better served by securing availability than by waiting.

Sourcing ammonium sulfate from China

We supply standard, granular (compacted) and crystalline ammonium sulfate from China to agricultural, compound-fertilizer and industrial buyers, loading at Qingdao or Tianjin with full export documentation.

• Ammonium Sulfate — the full grade range and typical specifications
• Granular Ammonium Sulfate — for direct soil application; the grade Brazilian programmes specify
• Crystalline Ammonium Sulfate — for compound fertilizer blending and industrial use
• How to import ammonium sulfate from China — documentation, inspection and shipping, step by step

Send your destination port, the grade you need, your volume and your required loading window, and we will confirm availability and quote on that basis.

On pricing in this article. The figures above are indicative market assessment levels for the grades and bases referenced, drawn from our own market monitoring. They are not offers and do not represent a quotation for any specific parcel, origin or shipment window. Ammonium sulfate prices vary with grade, production source, packaging, parcel size, destination and freight, and are quoted per inquiry and confirmed in the sales contract.