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Azobenzene-4-sulfonic Acid from Canada

Water-soluble azo compound used in direct dyes and analytical chemistry. HTS 2927.00.50.00 despite sulfonation, as azo function occurs later in chapter order. Provided as sodium salt.

Duty Rate — Canada → United States

16.5%

Rate breakdown

9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada

Import Tips

Sulfonated but azo takes precedence per chapter notes; moisture-proof packaging; pH adjustment instructions needed