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2503.00.00.10/Frasch Process Crude Sulfur/Mexico

Frasch Process Crude Sulfur from Mexico

Yellowish sulfur blocks mined via the Frasch hot-water process from underground Gulf Coast domes, unrefined with minor impurities. Falls under HTS 2503.00.0010 for crude sulfur of all kinds, not further processed.

Duty Rate — Mexico → United States

0%

Rate breakdown

9903.05.860%Universal product exemption (U.S. note 52(b))
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Import Tips

• Include Frasch process certification to distinguish from refined; impurities must not exceed natural levels

• Declare exact moisture and dirt content to prevent disputes over 'crude' vs refined status