Is China's Sulfuric Acid Ban the Next Big Supply Chain Crisis?
A geopolitical chokepoint in the Middle East triggers a severe chemical shortage, threatening South American copper production and global agricultural supply chains.
Global supply chains are bracing for a massive chemical-induced headache. Starting this May, China will completely halt its exports of sulfuric acid, specifically targeting the crucial by-product of its domestic copper and zinc smelting operations. As the world watches the escalating Iran conflict effectively shutter the Strait of Hormuz, the flow of Middle Eastern sulfur has ground to a halt. Now, Beijing is hoarding what's left, prioritizing its own crop-planting season over international demand, and leaving the global metals and fertilizer markets staring down the barrel of a severe deficit.
The Chokepoint Catalyst
You cannot magically conjure sulfuric acid out of thin air. The Middle East traditionally pumps out roughly one-third of the world’s sulfur supply, a natural byproduct of regional oil and gas refining. With maritime traffic through the Strait of Hormuz paralyzed by the ongoing war, those vital raw shipments are trapped. This geopolitical bottleneck has sent global sulfuric acid prices skyrocketing since the start of the conflict.
Sensing the squeeze, Chinese suppliers have quietly begun notifying major international buyers that the taps are turning off. The Chinese Ministry of Commerce has remained tight-lipped on the issue, but industry whisperings, initially brought to light by market intelligence firm Acuity, suggest this export restriction could drag on through the entirety of 2026.
A Copper-Plated Crisis for Chile and Beyond
Nobody is feeling the burn quite like South America. Chile, the undisputed heavyweight champion of global copper production, guzzles over one million tonnes of Chinese sulfuric acid every single year. Roughly 20 percent of Chile's total copper output relies heavily on specialized processing that is entirely dependent on this now-scarce chemical. Major mining operators with footprints in the region, such as BHP Group (NYSE: BHP) and Antofagasta plc (LSE: ANTO), are suddenly facing an incredibly hostile operating environment as input costs threaten to erode margins.
The math is brutal. According to data from Argus Media, CFR Chile sulfuric acid prices have surged a staggering 44 percent in just the past month, blowing past $250 per tonne. Sarah Marlow, an acid editor at Argus, warned that if Beijing enforces this suspension for the full calendar year, the Chileans will be staring down even higher price tags than the current surge. The ripple effects will inevitably batter the copper belts of the Democratic Republic of Congo and Zambia as well, inflating mining costs at the worst possible time for the global energy transition.
The Impossible Offset
Replacing this sudden vacuum of Chinese exports is a logistical nightmare. The global market is currently experiencing a parallel shortage of the base sulfur feedstocks needed to manufacture the acid elsewhere. Peter Harrisson, an acid analyst at the consultancy CRU Group, pointed out that offsetting the loss of Chinese volumes will be immensely difficult given the severely constrained global landscape.
As the peak agricultural season approaches, China is playing a ruthless but highly effective game of resource protectionism to secure its domestic phosphate fertilizer output. For the rest of the global economy, the sudden scarcity of this essential industrial chemical proves that in 2026, the real supply chain crises aren't just about crude oil, they are about the unglamorous, irreplaceable ingredients that keep the modern world running.
Sources: Bloomberg: "China to Ban Sulfuric Acid Exports as War Hits Supply" by Julian Luk and James Attwood (April 10, 2026)