Technical Grade 4-Aminoazobenzene-2,4-disulfonate Sodium from Canada
Technical grade (>92% purity) monosodium salt of the named disulfonic acid azo-compound, containing minor stabilizers per Chapter 29 note (f). Remains under HTS 2927.00.03.00 as the principal chemically defined organic compound with impurities not altering classification. Standard for batch dye synthesis.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Disclose stabilizer composition (anticaking agents allowed); excess additives risk 3824 reclassification
• Use NA 1759 UN number for transport if dust hazard; align shipping papers with chemical identity