Crude unrefined Sulfur price index

Crude unrefined Sulfur price December 2025 and outlook (see chart below)

• North America:US$0.29/KG, 7.4% up
• Europe:US$0.31/KG, 6.9% up

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Crude unrefined Sulfur price index

This post is a summary of the Crude unrefined Sulfur price developments. The price developments of Crude unrefined Sulfur are expressed in US$ prices converted FX rates applicable at the time when the price was valid. Crude unrefined Sulfur price index developments are calculated from multiple separate sources of data to ensure statistical accuracy.

The outlook for Crude unrefined Sulfur prices is generated from different inputs including:

• Very recent price developments of immediate cost drivers of Crude unrefined Sulfur prices
• Recent price developments of underlying feedstocks which drive the price of Crude unrefined Sulfur
• Market futures for both cost drives and feedstocks of Crude unrefined Sulfur prices
• Adjustment of current supply/demand imbalances in the Crude unrefined Sulfur market
• Longer term trends in likely demand conditions

What is crude unrefined sulfur and what is it used for

“Crude” or unrefined sulfur is elemental sulfur recovered directly from natural sources (sulfur deposits, sour natural gas or petroleum) or produced as a refinery/by-product stream; despite the name it is typically high-purity elemental sulfur (commonly ≈99.5% with organic or trace impurities). Its main uses are in fertilizers (via conversion to sulfuric acid), chemical manufacture (sulfides, sulfuric acid, rubber vulcanization agents), metallurgy, and some industrial applications such as ore processing and fungicides.

How is crude unrefined sulfur produced

Crude sulfur is produced three ways: direct mining (the Frasch process for native deposits), recovery from “sour” natural gas and petroleum streams (conversion of H₂S to elemental sulfur, mostly via the Claus process), and recovery from smelter/industrial gases. In refineries and gas plants, hydrogen sulfide is converted to elemental sulfur through thermal and catalytic stages (Claus) and supplementary recovery units; the Frasch method melts and pumps native sulfur from underground deposits where that geology exists.

How large is the global market for crude unrefined sulfur and where is it produced

Global production (elemental sulfur) is large — on the order of tens of millions of tonnes per year (estimated ~85 million tonnes produced worldwide in 2024). Market value estimates vary by source and basis (elemental sulfur vs. sulfur products), but industry reports place the sulfur market in the multi-billion USD range with forecast growth tied to fertilizer and chemical demand. Major production and recovery occur where oil, gas and refining capacity is large — significant producers/exporters include countries with big hydrocarbon and refining industries (for example Canada, Russia, Saudi Arabia, the U.S., Iran and Gulf states), and demand centers are large agricultural and industrial economies such as China, India and Europe.