Middle East Supply Disruption Continues Rippling Into Fertilizer-Adjacent Chemical Costs

Introduction

The continuing disruption to chemical and energy flows through the Middle East is extending well beyond crude oil and natural gas. Fertilizer markets are among the most directly exposed, but the shock is also reaching fertilizer-adjacent chemicals such as sulfur, sulfuric acid, methanol, ammonia, and other industrial feedstocks.

The Strait of Hormuz remains a critical trade route for Gulf-origin commodities, and disruptions have created tighter availability, higher freight costs, longer lead times, and greater price volatility. The World Trade Organization has reported that trade in urea and phosphate fertilizers has been severely disrupted, particularly affecting import-dependent economies in Asia and Africa. (World Trade Organization)

For chemical buyers, this means the cost impact is no longer limited to the fertilizer itself. Higher upstream feedstock and logistics costs are increasingly moving through connected chemical value chains.

Sulfur Has Become a Major Transmission Channel

One of the clearest examples is sulfur.

Sulfur is a critical feedstock for producing sulfuric acid, which in turn is essential for phosphate fertilizer production and a wide range of industrial applications. The Persian Gulf is an important source of global sulfur supply, so disruption to exports can quickly tighten availability in other regions. (Chemical & Engineering News)

The price response has been significant. Sulfur prices reached an all-time high of around CNY 11,084/ton in June 2026, and remained around CNY 9,502/ton on August 12, according to reported market data. (Trading Economics)

That matters beyond sulfur itself. Higher sulfur costs can raise the production economics of sulfuric acid and ultimately increase costs for phosphate fertilizer producers and other sulfur-intensive industries.

Sulfuric Acid Costs Can Spread Beyond Fertilizer

The sulfur shock also creates pressure in the sulfuric acid market.

Sulfuric acid is one of the world's most widely used industrial chemicals. It is essential for phosphate fertilizer production but is also consumed in metals processing, batteries, pigments, paper, and other industries. (Chemical & Engineering News)

This creates a competition-for-feedstock effect.

When fertilizer producers, metal processors, and other industrial users all compete for sulfur and sulfuric acid, a disruption originating in the Gulf can produce cost increases across several unrelated manufacturing chains.

For procurement teams, sulfur therefore needs to be monitored not simply as a fertilizer input but as a cross-industry chemical risk indicator.

Ammonia and Urea Remain Under Pressure

Nitrogen fertilizer markets are facing a separate but connected supply problem.

Ammonia production depends heavily on natural gas, both as a feedstock and as an energy source. Disruption to Gulf gas and shipping infrastructure therefore affects both the physical availability and production economics of ammonia and downstream urea. (ECHEMI)

Earlier in the crisis, urea prices rose sharply, while more recent market analysis indicates that the effective closure of the Strait left more than 800,000 tonnes of urea stranded in the Middle East Gulf. Prices had approached approximately $780/ton FOB by mid-April, illustrating the scale of the shock. (Argus Media)

Even when headline fertilizer prices stabilize, stranded cargoes, limited vessel availability, and elevated replacement costs can continue affecting delivered prices for importing regions.

Methanol Adds Another Layer of Chemical Cost Pressure

The disruption is also affecting methanol, which is not a conventional fertilizer but is deeply embedded in the broader chemical supply chain.

Methanol is used to produce numerous downstream products and chemical intermediates. Middle Eastern supply disruptions pushed global methanol prices sharply higher during the first half of 2026, while market analysts now expect the regional supply squeeze to persist longer than previously anticipated. (S&P Global)

This creates indirect exposure for manufacturers purchasing methanol derivatives.

Higher methanol costs can influence products such as formaldehyde, acetic acid, MTBE and other derivatives. The resulting increase in chemical production costs can eventually appear in downstream agricultural, industrial, and specialty-chemical products.

Fertilizer-Adjacent Chemicals Face a Double Cost Shock

The current environment is particularly challenging because chemical buyers are facing two simultaneous cost pressures:

1. Feedstock inflation
Natural gas, sulfur, ammonia, methanol and other upstream inputs have become more expensive or less reliable.

2. Logistics inflation
Cargoes that previously moved efficiently through the Gulf now face rerouting, delays, insurance complications, vessel shortages and higher freight costs.

The result is that even a buyer sourcing material from outside the Middle East may still face higher replacement costs.

This is why the disruption is better understood as a global chemical-cost transmission problem, rather than simply a regional fertilizer shortage.

Asia Remains Particularly Exposed

Asian markets are especially vulnerable because of their dependence on Gulf-origin fertilizer and chemical supplies.

The International Food Policy Research Institute has highlighted South Asia and Africa among the regions particularly exposed to Persian Gulf fertilizer and natural-gas disruptions. (IFPRI)

India has so far managed to stabilize urea availability, but recent reporting indicates that DAP and complex fertilizer markets remain more challenging, illustrating how different fertilizer categories can experience different levels of supply pressure. (Indian Express)

For Asian chemical buyers, this creates a need to look beyond domestic inventories and evaluate the upstream origin of critical feedstocks.

Why Fertilizer Costs Can Spill Into Other Chemicals

The fertilizer industry is interconnected with the broader petrochemical and inorganic chemical system.

A simplified chain looks like:

Natural gas → Ammonia → Urea / nitrogen fertilizers

and:

Sulfur → Sulfuric acid → Phosphoric acid → Phosphate fertilizers

At the same time:

Methanol → Chemical intermediates → Multiple downstream products

A disruption at the beginning of any of these chains can therefore affect products that may not be classified as fertilizers themselves.

This is particularly relevant for manufacturers purchasing agricultural chemicals, industrial chemicals, intermediates, and additives from suppliers that depend on the same regional feedstocks.

Procurement Strategies Are Starting to Change

The continuing disruption is pushing chemical buyers toward more defensive procurement strategies.

Companies are increasingly looking at:

• Alternative geographic suppliers

• Higher safety-stock requirements

• Multi-origin sourcing

• Longer-term supply agreements

• Freight and insurance exposure

• Upstream feedstock dependency

• Replacement-cost monitoring rather than only contract prices

This approach is becoming more important because a supplier located outside the Gulf can still be indirectly exposed if its upstream raw materials originate from the region.

The Market Impact May Outlast the Physical Disruption

One of the most important lessons from the current crisis is that chemical markets do not immediately normalize when shipping conditions improve.

Inventories may have already been depleted, buyers may need to rebuild stocks, vessels may remain committed to alternative routes, and suppliers may continue pricing material according to replacement costs.

The disruption has therefore created the possibility of longer-lasting cost effects even after physical trade flows begin improving.

Industry analysis has already warned that the impact of the Gulf chemical disruption could extend for months or even years across petrochemicals, fertilizers, sulfur and associated products. (Chemistry World)

What Chemical Buyers Should Watch Next

The most important indicators for procurement teams will be:

Sulfur prices: A key signal for phosphate fertilizer and sulfuric-acid costs.

Ammonia and urea availability: Indicators of continued nitrogen fertilizer tightness.

Natural-gas prices: A major determinant of ammonia production economics.

Methanol pricing: A broader indicator of chemical-feedstock tightness.

Hormuz shipping flows: Critical for understanding whether physical supply constraints are easing.

Freight and insurance costs: Important for calculating the true landed cost of replacement material.

Regional inventories: Low stocks can keep prices elevated even when production resumes.

Conclusion

The Middle East supply disruption is increasingly becoming a chemical-cost problem rather than simply an energy problem.

Fertilizer markets remain at the center of the shock, but the effects are spreading through sulfur, sulfuric acid, ammonia, methanol and other fertilizer-adjacent chemical value chains. The combination of constrained supply, higher feedstock costs and more expensive logistics is creating a wider cost environment for chemical manufacturers and agricultural-input producers.

For procurement organizations, the key lesson is clear: monitoring the finished chemical price alone is no longer enough. Understanding where feedstocks originate, how they move through global trade routes, and which other industries compete for the same inputs is becoming essential to forecasting chemical costs.

As the Middle East disruption continues, companies with diversified sourcing, stronger inventory visibility and upstream feedstock intelligence will be better positioned to manage the next wave of price volatility.