Metanilic Acid for Dye Synthesis
Purified metanilic acid packaged specifically for azo dye production, meeting chapter note (h) for diazotizable amines used in dyes, classified under HTS 2921.42.21.00. Essential coupling agent in textile colorant manufacturing.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If pre-reacted into azo dye acid
Synthetic organic coloring matter derived from such amines excluded from Chapter 29 per note 2(g).
If diazotized derivative
Diazonioum salts for dyes fall under diazo-compounds heading, later in numerical order per classification rule.
If containing additional heterocyclic ring
Other organic compounds with added ring systems shift to later chapter 29 headings.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Certify intended use as dye intermediate with end-user letters; prevents misclassification as finished coloring matter
• Use nitrogen-blanketed packaging to prevent oxidation; include stability data in import documentation
• Confirm no dye coupler additions that would invoke chapter note (h) dilution provisions for azo dye production
Related Products under HTS 2921.42.21.00
Metanilic Acid
Metanilic acid is a chemically defined aromatic monoamine derivative, specifically 3-aminobenzenesulfonic acid, classified under HTS 2921.42.21.00 as an aniline derivative salt. It serves as a key intermediate in the synthesis of azo dyes, pharmaceuticals, and sulfonamide drugs due to its sulfonic acid and amino functional groups.
Metanilic Acid Sodium Salt
The sodium salt of metanilic acid, a water-soluble aromatic amine derivative, falls under HTS 2921.42.21.00 per chapter notes classifying inorganic salts of organic amine compounds with the parent compound. Used in azo dye coupling reactions and as a reagent in analytical chemistry.
Technical Grade Metanilic Acid
Technical grade metanilic acid contains allowable impurities but remains a separate chemically defined compound under chapter note (a), classified in HTS 2921.42.21.00. Primarily used in industrial dye manufacturing where high purity is not required.
Pharmaceutical Grade Metanilic Acid
High-purity metanilic acid (>99.5%) for synthesis of sulfonamide antibiotics and pharmaceutical intermediates, classified as a chemically defined aromatic monoamine derivative under HTS 2921.42.21.00. Meets USP/EP standards for drug manufacturing.