Recovered Frasch Process Sulfur from China
Yellow solid sulfur blocks recovered via the Frasch hot-water mining method from underground Gulf Coast salt domes. Falls under HTS 2503.00.00.90 as crude sulfur not further refined, distinct from precipitated forms.
Duty Rate — China → United States
25%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Include process extraction certificates proving non-precipitated origin to prevent reclassification
• Declare block dimensions and weight; molten sulfur shipments risk categorization as refined
• Check for contamination thresholds that could trigger heading 2530 earth color mixtures