Military action leading to closure of the Strait of Hormuz between Iran and Saudi Arabia could seriously disrupt global trade in chemicals and oil products, with a knock-on effect for the world’s already fragile manufacturing economy.

The US killing of General Qasem Soleimani, head of the Iranian Revolutionary Guards’ overseas forces, on 3 January 2020 threatens to further stoke up tensions in the Middle East. On 8 January, Iran fired over a dozen missiles at US forces based in Iraq to retaliate for the assassination, which the US insists was a defensive action to prevent attacks on US citizens in the region.

The Strait of Hormuz is an important shipping lane, linking Middle East oil and chemical exporters to the rest of the world. More than 20% of global petroleum liquids and a significant proportion of chemicals are transported through the Strait.

According to ICIS senior consultant, Asia, John Richardson, quoting ICIS Supply & Demand database forecasts for polyolefins exports in 2020, this includes 4.1m tonnes of Middle East high-density polyethylene (HDPE) production due to be exported via the Strait. This accounts for 38% of total global net exports amongst all the regions that are in net export positions – where exports are higher than imports.

Supply risk is greater in linear low density polyethylene (LLDPE) where 51% of global net exports – 4.7m tonnes – appears to be exposed. Low-density PE (LDPE) is most at risk, with Middle East exports via the Strait accounting for 3.1m tonnes of net exports, 68% of the global total.

Other important products heavily exposed to disruption to shipping in the Strait of Hormuz include ethylene glycol (MEG), ethylene and methanol.

In an all-out war scenario the Strait could close completely, cutting off regional chemical exports for a prolonged period. A lesser conflict could lead to periodic disruption to traffic through the Strait.

For chemical markets already in oversupply, such as polyolefins, isocyanates and MEG, any supply shock from the Middle East will have less impact as capacities elsewhere can be ramped up in response. This happened after the attack on a Saudi Arabian oil processing facility in September 2019 which cut feedstock supplies to regional chemical facilities.

Oil prices spiked 5% to more than $70bbl after the US action and Iran’s response. But they fell back after it appeared both sides were not planning to further escalate, at least in the short term.


Higher oil prices act as a brake on consumer spending, so any sustained hike is likely to hurt global economic growth. The manufacturing economy is already fragile, with purchasing managers indices in negative territory for the US and Europe.

Business and consumer sentiment soured late in 2018 as the US-China trade war deepened and growth slowed in major economies. This is likely to be hurt further by any Middle East conflict.

For Rhian O’Connor, lead analyst, Market Demand Analytics, ICIS, the main impact on petrochemicals is sentiment.

“The demand side remains very weak for manufactured goods with pessimism high and investment low. The potential for conflict will further dampen global producers desire to invest. Higher raw material prices will thin margins as producers struggle to pass this through the chain. Any consumer price increases could soften end market demand, at a fragile time.”


According to Richardson, ethylene and PE variable cost margins for naphtha-based crackers in northeast Asia fell throughout 2019 and in December hit minus $90/tonne, the lowest since ICIS records began in 2000. Higher oil prices would squeeze these further whilst demand is suffering because of increased US supply to the region.

Unusually, benzene spreads were also below $100/tonne for six months in 2019.

“Higher oil prices will act as a tax on the economy, reduce economic growth and make life worse for petrochemical producers. I think that is probably the bigger story than any interruption to supply,” he added.

Any attack by Iran on facilities located in other regional countries that are seen as US aligned such as Saudi Arabia or Kuwait would lead to fundamental supply side issues in the market, according to ICIS Senior Consultant, Michael Connolly.

“Attacks on Iranian facilities will only really hurt the Iranian market, as exports (crude and products) are very limited due to sanctions,” he added.

International eChem chairman Paul Hodges, is concerned about the additional uncertainty that this development will create for the chemical industry.

“Companies are already worried about the downturn in margins caused by the slowdown in the global economy, the rise of protectionism and the relatively high cost of oil,” he said. The risk now is that worries over availability lead to a period of higher prices caused by panic buying, and that these can’t then be passed through to end-users due to softening demand.”

He believes that any threat to the Strait of Hormuz would almost certainly plunge the global economy into outright recession, given the likely impact on oil market supply and prices.

With the conflict unlikely to be resolved quickly, Hodges urges chief executives to focus on contingency planning rather than just assuming they can rely on ‘business as usual’, particularly with the International Monetary Fund already warning that the global economy is in a “precarious” position. ■

Click on the map to see an interative infographic showing the impact of the closure of the Strait of Hormuz

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