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%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
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