Recovered Sulfur from Sour Gas from Canada
Elemental sulfur recovered as a byproduct from natural gas desulfurization plants via Claus process, in flake or prill form. Falls under 2503.00.00 as it remains unprocessed natural sulfur, not sublimed or colloidal.
Duty Rate — Canada → United States
0%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Provide gas processing recovery certificates to affirm natural sulfur status
• Ensure flake size specs match unrefined criteria to avoid advanced processing claims