Fast Scarlet Base B from Mexico
Fast Scarlet Base B is a specialized aniline salt fast color base that produces scarlet red hues when coupled with beta-naphthol in azoic dyeing systems. It offers superior alkali and chlorine fastness for workwear fabrics. As a pure aromatic monoamine derivative, it properly falls under HTS 2921.42.55.00.
Duty Rate — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include batch certificates verifying no added solvents beyond transport safety limits per Chapter Note 2(e)
• Classify based on principal amine-function; ester derivatives follow acid component per Note 5(A) but remain here
• Monitor for sulfonated forms, which may require heading 2904 evaluation if sulfohalogenated derivatives apply