Sodium Hydrosulfite Dye Vat Discharge Agent from Canada
A chemical mixture containing sodium hydrosulfite (Na2S2O4) used in textile dyeing to discharge color from vat dyes, creating white patterns on indigo-dyed denim. This preparation falls under HTS 3824.99.32.00 as a mixture of hydrosulfite compounds with other inorganic substances for industrial textile processing.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Verify hydrosulfite content exceeds 50% to qualify under this subheading; obtain chemical analysis certificates
• Ensure SDS includes proper UN classification for hazardous goods transport
• Common pitfall: misclassification as pure sodium hydrosulfite (2831.10)