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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If heterocyclic sulfonamide completed
Completed pharmaceutical intermediates with heterocyclic structure classified later in Chapter 29.
If formulated as medicinal chemical
Medicinal preparations containing the compound excluded from Chapter 29 per note 2(e) for immunologicals.
If diagnostic reagent preparation
Diagnostic or laboratory reagents shift to Chapter 38 when put up for specific laboratory use.
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
• Include DMF or CEP references; coordinate with FDA prior notice for pharmaceutical intermediates
• Validate GMP-compliant packaging; sterile liners required to prevent contamination during customs inspection
• Document impurity profiles per ICH Q3A guidelines to confirm chemical definition status
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.
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.