Asia’s Petrochemical Heartland Is Built on Middle Eastern Naphtha — And the Iran Crisis Exposes the Risk

THE CLOSURE OF the Strait of Hormuz following the late‑February escalation between the US–Israel and Iran has triggered one of the most significant petrochemical feedstock disruptions in decades.

The incident has already led to severe interruptions to tanker movements, insurance withdrawals, and a dramatic fall in vessel transits. Major carriers have started rerouting via the Cape of Good Hope, and traffic through Hormuz has dropped sharply, with multiple commercial vessels damaged. [janes.com]

For Asia’s petrochemical industry — which relies on naphtha imports more than any other region on earth — this is not an abstract geopolitical event. It’s a direct hit to the feedstock lifeline that sustains the world’s largest chemical manufacturing region.

A Region Built on Imported Naphtha

Asia’s cracker industry is overwhelmingly naphtha‑based, and its supply chain is structurally import‑dependent. The region’s major petrochemical producers — India, Thailand, Indonesia, Malaysia, China, Japan, Singapore and South Korea — collectively imported 86.6 million tonnes of naphtha in 2025.

ICIS Supply & Demand data shows just how concentrated these flows are:

2025 Naphtha Imports into Asia’s Major Petchem Economies

(Share of 86,593,134 tonnes total)

Supplier	Volume (tonnes)	Share
UAE	19,669,421	23%
Russia	10,812,792	12%
Qatar	9,972,008	12%
Kuwait	7,945,619	9%
India	5,925,519	7%
Algeria	5,159,289	6%
Saudi Arabia	3,960,787	5%
South Korea	3,873,939	4%
Oman	2,690,791	3%
United States	2,502,404	3%
Malaysia	1,670,802	2%
Bahrain	1,586,115	2%

The picture is unmistakable:

Middle Eastern suppliers (UAE, Qatar, Kuwait, Saudi Arabia, Oman, Bahrain) provide 54% of all naphtha imported by Asia’s petchem sector.

If we include Algeria — another exporter whose product typically moves through the same risk‑sensitive global tanker routes — that share rises further.

This highlights the vulnerability of petrochemical ecosystems that depend heavily on a single route or cluster of suppliers when geopolitical shocks occur.

When the Strait of Hormuz Shuts, Asia’s Crackers Feel It Immediately

Since the attacks and subsequent retaliation at the end of February, the Strait of Hormuz has been effectively shut down, with tanker traffic falling dramatically amid missile strikes, insurance cancellations and vessel attacks.

The petrochemical consequences have already begun. Asian petrochemical producers — dependent on some 60% of Middle Eastern naphtha — have begun cutting operating rates:

• Singapore’s Petrochemical Corp of Singapore has declared force majeure, citing disrupted naphtha deliveries.

• Indonesia’s Chandra Asri followed with its own force majeure.
• South Korea’s Yeochun NCC announced the same.
• China’s CNOOC and Shell Petrochemicals has also shut down, but this is due to the interruption of crude supply to the complex’s refinery rather than a disruption to naphtha flows.

“Almost 9 million tonnes/year of South Korean ethylene capacity is non-integrated and heavily reliant on imported naphtha​, according to ICIS data.

At the time of writing, more than 10 producers across Asia have implemented some form of management on operations, with majority of South Korean producers predictably on this list,” wrote my ICIS colleague, Josh Quah, in this 9 March ICIS News article.

This is the first visible wave of impact. The deeper structural issue is that Asia’s naphtha supply chain is geographically locked in. Most Middle Eastern cargoes must pass through Hormuz. There is no short‑term workaround.

The Data Shows Why the Impact Is So Severe

Between them, the UAE, Qatar, Kuwait, and Saudi Arabia supply almost half of Asia’s naphtha. These are precisely the exporters most reliant on the Strait of Hormuz — a single geopolitical chokepoint now effectively shut.

2. Russia Provides 12% — but cannot fill the gap

Russia is Asia’s second‑largest supplier. However:

• Sanctions, tanker availability constraints, and long voyage times limit scalability.
• Russian barrels cannot physically replace Middle Eastern volumes quickly.

3. Asia Has Vast Cracking Capacity but Almost No Feedstock Independence

China, Japan, South Korea and Southeast Asia have enormous naphtha crackers — but negligible domestic naphtha surplus. When imports stop, rate cuts follow almost immediately.

4. Alternatives (LPG, ethane, condensate) are also disrupted

LNG and condensate are also shipped through the Strait and so are affected by the same geopolitical shock.

Chemical makers cannot simply switch feedstocks.

A Perfect Illustration of Ecosystem Vulnerability

Petrochemical investments succeed or fail based on what Stephen Kinder, a former executive at Shell Chemicals, calls ecosystem strength which includes feedstock security. On this basis, Asia’s naphtha ecosystem is both enormous and brittle:

• Enormous because it is the global centre of chemicals production
• Brittle because its feedstock system depends on a single region and a single maritime chokepoint

The Iran crisis has simply revealed how tight the system really is.

Where Does Asia Go From Here?

While the current disruption will eventually ease, structural questions remain:

1. Greater diversification of suppliers?

The data suggests this is possible only at the margin. No region has the export scale of the Middle East.

2. More LPG/ethane cracking?

Feasible in the long term, but immediately constrained by logistics, LNG tightness and capital cost.

3. Increased domestic liquids production?

Very unlikely — mature import‑dependent markets cannot redesign geology.

4. China’s and India’s push for more heavy feedstock flexibility?

Some progress is possible, but the dependence on imported liquids remains fundamental.

5. Investment in alternative ecosystems?

Perhaps we could see deeper upstream and downstream integration and feedstock-supply supply chains somehow les exposed to the Strait of Hormuz. But it seems likely that Asia’s reliance on imported naphtha will last for several more decades.

But Asia’s reliance on imported naphtha will remain for decades.

Conclusion: The Iran Crisis Is Not a One‑Off Shock — It’s a Structural Warning

The 2026 Hormuz disruption is a real‑time stress test of Asia’s petrochemical ecosystem. With more than 50% of the region’s naphtha feedstock coming from Middle Eastern suppliers, and with Hormuz effectively closed, the fragility of the system has been laid bare.

Force majeure declarations across Singapore, Indonesia and South Korea are only the beginning. The deeper message framework — is clear:

Asia’s petrochemical dominance sits atop a feedstock system that is dangerously concentrated. A single geopolitical shock can reverberate across an entire industrial continent.

Now that we have the data and the real‑world test case, the industry must confront this reality — and plan accordingly.

The post Asia’s Petrochemical Heartland Is Built on Middle Eastern Naphtha — And the Iran Crisis Exposes the Risk appeared first on Asian Chemical Connections.