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# Sulphur scramble poses latest threat to global food prices
- URL: https://news.cibocom.com/sulphur-scramble-poses-latest-threat-to-global-food-prices/
- Published: 2026-10-13T04:00:09.000Z
- Updated: 2026-11-01T19:51:26.000Z
- Author: Cibocom
- Tags: Featured

An intensifying battle for the world’s increasingly scarce supplies of industrial sulphur is threatening to drive up food prices, with deep-pocketed miners outbidding fertiliser makers for the commodity and forcing them to scale back production.

Disruption in the Strait of Hormuz has created a significant shortage of sulphur, a byproduct of the oil and gas industry that is converted into sulphuric acid and used to make both copper and phosphate fertilisers.

Roughly half the world’s sulphur passed through the strait before the Iran war, but the blockage of the waterway has sent the price close to 10 times above its pre-conflict level.

Raghav Jain, at commodities price agency Argus, said the mining sector, boosted by the proceeds of higher metals prices, was “winning the bidding war” for the meagre supply over the lower-margin fertiliser industry.

The effects are already being felt in agriculture, with fertiliser manufacturers having to cut back output and warning that food prices will rise.

“We’re not able to pass along those higher costs due to farmer affordability, and as such the other option is to slow production,” said Andy Jung, chief economist at US fertiliser company Mosaic.

“At some point . . . we’re going to see that show up meaningfully in global yields, and then we’re going to see food prices escalate.”

While sulphur has typically sold for $100-$200 a tonne, prices have surged close to $1,000 a tonne this year. China, a major sulphuric acid supplier, has also moved to ban exports of the commodity, further complicating the issue.

Morocco’s OCP, the world’s biggest phosphate exporter, last month warned of the effects of the soaring sulphur price, noting how it was not able to pass the costs on to hard-pressed farmers.

OCP has sought to shift production towards fertilisers that require less sulphur, as well as developing alternative non-oil and gas sources.

However, miners have been cushioned by the soaring prices, with copper close to its all-time high of nearly $15,000 a tonne amid booming demand for the industrial metal used in everything from consumer electronics to power grids.

Chile’s Antofagasta said in August that while higher sulphuric acid and diesel prices had driven up costs, its earnings for the first six months were still almost a third higher than the same period a year earlier.

Indeed the elevated price of sulphuric acid has even helped miners that smelt copper, a process that produces acid as a byproduct.

Raman Randhawa, chief financial officer at Capstone Copper, said some in the industry had struck deals in which they swapped acid for mined copper, helping both secure what they needed at better rates.

Sulphuric acid prices were “exceptional, extraordinary”, he said. “The fortunate thing is the copper price is much higher than expected as well.”

The bad news for farmers is that, far from being resolved, disruption to the sulphur trade is “growing” again, according to data and analytics platform Kpler, with vessels still stuck in Hormuz as the Iran war drags on.

“We need the sulphur,” said Madeleine Overgaard, Kpler market data manager for dry bulk. “From the mining industry down to what we pay for our laptops . . . it impacts us all.”

“On the other hand, crop yields also depend on it,” so the disruption will affect “what we pay for our baguette in the bakery next year”.