Nitrotoluenesulfonic Acid
Nitrotoluenesulfonic acid combines nitro (-NO2) and sulfonic acid groups on toluene hydrocarbon backbone, classified in HTS 2904.99.50.00 as other nitrated/sulfonated derivatives. Used in azo dye synthesis.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If predominantly nitrated with secondary sulfonation
Nitrated derivatives classified earlier (2904.20) per chapter note 3 on numerical order.
If classified by nitro nitrogen-function rather than sulfonation
Nitrogen-function compounds in 2921 may take precedence if sulfonate not principal characteristic.
If technical grade mixtures of positional isomers
Mixtures not meeting 'chemically defined' criteria per chapter note (a) go to Chapter 38.
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Import Tips & Compliance
• ,Comply with TSCA import certification for new chemical substances notification
• Watch for reclassification to 2904.20 if nitro group predominates in customs determination
Related Products under HTS 2904.99.50.00
p-Toluenesulfonic Acid
p-Toluenesulfonic acid (PTSA) is a sulfonated derivative of toluene, a hydrocarbon, containing a sulfonic acid group (-SO3H) attached to the aromatic ring. It falls under HTS 2904.99.50.00 as a sulfonated derivative of hydrocarbons, whether or not halogenated, specifically in the 'other' category. Commonly used as a catalyst in organic synthesis and esterification reactions.
Benzenesulfonic Acid
Benzenesulfonic acid is the simplest aromatic sulfonic acid, derived from benzene hydrocarbon through sulfonation. Classified under HTS 2904.99.50.00 as a sulfonated derivative of hydrocarbons in the 'other' subcategory. Used in manufacturing detergents, dyes, and pharmaceuticals.
Dinonylnaphthalenesulfonic Acid
Dinonylnaphthalenesulfonic acid (DNNSA) features two nonyl alkyl chains on sulfonated naphthalene, qualifying as alkylated sulfonated hydrocarbon derivative under HTS 2904.99.50.00. Widely used in alkylation catalysts and metal extraction.
Xylenesulfonic Acid Mixture
Xylenesulfonic acid mixture contains isomers of dimethylbenzenesulfonic acid from sulfonation of commercial xylene feedstock. Falls under HTS 2904.99.50.00 as sulfonated derivatives not elsewhere specified. Used in hydrotropes and polymerization catalysts.
Camphorsulfonic Acid
10-Camphorsulfonic acid derives from sulfonation of camphor (bicyclic hydrocarbon terpene). Classified HTS 2904.99.50.00 as sulfonated cyclic hydrocarbon derivative. Chiral resolving agent in asymmetric synthesis.
Anthracene-2-Sulfonic Acid
Anthracene-2-sulfonic acid from sulfonation of anthracene polycyclic hydrocarbon. HTS 2904.99.50.00 covers this higher PAH sulfonated derivative. Used in specialty dye synthesis.