Raw Sulfur Blocks
Large cast blocks of molten natural sulfur cooled in molds from Frasch recovery, unrefined. The casting is a simple cooling process, not a chemical change, and the sulfur is not sublimed, precipitated, or colloidal, so it falls under 2503.00.00.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Ensure the blocks are not further processed, such as by melting or refining
• Provide CBSA with the Frasch process details and a purity certificate, and be ready to explain the cooling process if questioned
Related Products under Tariff item 2503.00.00
Bolivian Huari Huari Sulfur
High-purity native sulfur from the Huari Huari mine in Bolivia, hand-collected from high-altitude lagoons. The sulfur is in a crude state with minimal processing, and it is not sublimed, precipitated, or colloidal, so it is classifiable under 2503.00.00.
Bulk Crushed Sulfur Rock
Bulk crushed sulfur rock, mined and crushed from native sulfur deposits, used directly in sulfuric acid production. The crushing process is a permitted mechanical treatment under Chapter 25 Note 1, and the product is not sublimed, precipitated, or colloidal sulfur, so it falls under tariff item 2503.00.00.
Crude Natural Sulfur Ore
Crude natural sulfur ore extracted from volcanic or underground deposits, containing impurities like soil and moisture. It is in a crude state with no processing beyond washing or mechanical separation, consistent with Chapter 25 Note 1, and is not an excluded form, so it is classifiable under 2503.00.00.
Frasch Process Crude Sulfur
Yellowish sulfur blocks mined via the Frasch hot-water process from underground domes, unrefined with minor impurities. The product is crude sulfur, not sublimed, precipitated, or colloidal, and the mining process is a physical extraction, so it falls under 2503.00.00.
Frasch Process Sulfur
Molten sulfur extracted via the Frasch process and solidified into blocks, a natural mining method. The product is crude sulfur, not subjected to sublimation, precipitation, or colloidal processing, and the solidification is not a prohibited process, so it is covered by 2503.00.00.
Native Crude Sulfur Ore
Raw sulfur extracted directly from volcanic deposits or caprock formations, containing impurities like soil and rock. The ore is in a crude state with no processing beyond extraction, and it is not an excluded form, so it is classifiable under 2503.00.00.