2-Anthracenesulfonic acid
2-Anthracenesulfonic acid is a sulfonated derivative of anthracene, a polycyclic aromatic hydrocarbon, containing only sulfo groups as required by HTS 2904. It is a chemically defined organic compound used primarily as an intermediate in dye synthesis and analytical chemistry. This classification falls under heading 2904 for sulfonated hydrocarbons without halogenation or other functional groups.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If further processed into synthetic dye
Once converted to coloring matter, it shifts from Chapter 29 intermediates to Chapter 32 synthetic organic dyes.
If in mixture or solution for specific lab use
Mixtures exceeding Chapter 29 solvent/stabilizer allowances fall under Chapter 38 as chemical preparations.
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Import Tips & Compliance
• Verify purity certificate to confirm it meets 'chemically defined' criteria per Chapter 29 notes; provide SDS for hazardous material handling
• Ensure no added solvents beyond transport allowances to avoid reclassification
• Label as research chemical if not for commercial dye production
Related Products under HTS 2904.10.04.00
Sodium 2-Anthracenesulfonate
Sodium 2-anthracenesulfonate is the sodium salt of 2-anthracenesulfonic acid, classified with the parent acid per Chapter 29 note on inorganic salts of organic acids. It serves as a water-soluble intermediate for fluorescent dyes and surfactants. This fits HTS 2904.10.0400 as a derivative containing only sulfo groups.
Ethyl 2-Anthracenesulfonate
Ethyl 2-anthracenesulfonate is the ethyl ester of 2-anthracenesulfonic acid, explicitly covered under HTS 2904 for sulfo derivatives and their ethyl esters. Used in organic synthesis for protecting groups and dye precursors. Chapter notes confirm esters classify with the parent acid-function compound.
2-Anthracenesulfonic acid hydrate
2-Anthracenesulfonic acid hydrate is the parent compound dissolved in water as allowed under Chapter 29 note (d) for chemically defined products. It maintains classification in HTS 2904.10.0400 as a sulfonated hydrocarbon derivative. Commonly used in hydrated form for stability in lab applications.
Purified 2-Anthracenesulfonic acid (98% purity)
High-purity 2-anthracenesulfonic acid (98%) is a refined version of the sulfonated anthracene derivative, free of significant impurities per Chapter 29 scope. Classified under HTS 2904.10.0400 for its sulfo-only hydrocarbon structure. Ideal for precise analytical and synthetic uses.
2-Anthracenesulfonic acid with anticaking stabilizer
This form includes an anticaking agent necessary for preservation/transport, explicitly allowed under Chapter 29 note (f), retaining HTS 2904.10.0400 classification. The stabilizer does not alter its primary sulfo hydrocarbon nature. Used in industrial dye manufacturing.
Technical grade 2-Anthracenesulfonic acid
Technical grade 2-anthracenesulfonic acid contains minor impurities but remains a separate chemically defined compound under Chapter 29 note (a). It classifies in HTS 2904.10.0400 as the specified sulfo derivative of anthracene. Primarily for bulk dye production.