2831.90.00.00/Sodium Dithionite/Germany

Sodium Dithionite from Germany

Sodium dithionite (Na2S2O4), also known as sodium hydrosulfite, is a white crystalline powder used as a reducing agent in textile bleaching and vat dyeing processes. It falls under HTS 2831.90.00.00 as one of the 'other' dithionites specified in the chapter notes for Chapter 28. This chemically defined inorganic compound is stabilized for industrial use but classified here rather than under organic-stabilized variants.

Duty Rate — Germany → United States

10%

Rate breakdown

9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%

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Import Tips

• Verify purity and chemical identity via Certificate of Analysis to confirm classification as chemically defined dithionite under Chapter 28 notes

• Ensure proper hazardous material declaration (UN1384) and packaging compliant with DOT/IMDG for reducing agents

• Avoid misclassification as organic derivatives; check for organic stabilizers which shift to specific stabilized subheadings