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Indigo Carmine Lake Blue from Mexico

Indigo carmine lake is a deep blue pigment formed by adsorbing indigo carmine dye onto an alumina substrate, qualifying as a color lake under U.S. note 3. It is used in printing inks, textiles, and pharmaceutical coatings. HTS 3205.00.40 applies to such preparations based on color lakes.

Duty Rate — Mexico → United States

16.5%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico

Import Tips

Confirm dye purity via HPLC analysis; declare exact substrate percentage

Common pitfall: incorrect declaration as water-soluble dye leading to audits