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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified as aniline base rather than salt
Aniline salts follow parent amine classification, but pure bases have separate provisions earlier in numerical order.
If sulfonate function dominates
Sulfonated inorganic compounds may apply if amine group not principal characteristic, per chapter exclusion notes.
If imported as chemical preparation
Mixtures or preparations of organic chemicals not purely defined compounds shift to Chapter 38 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
• Label as 'Sodium 3-aminobenzenesulfonate' with CAS 121-47-1; include salt confirmation in CoA to match HTS specificity
• Comply with DOT shipping regulations for corrosive solids; use UN-approved drums to prevent leakage-related rejections
• Avoid water-dissolved forms exceeding transport allowances, as chapter note (d) limits solutions to prevent general use classification
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.
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.
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.