Cumene Sulfonic Acid
Cumene sulfonic acid, derived from sulfonation of cumene (isopropylbenzene), is an aromatic sulfonated hydrocarbon. Classified in HTS 2904.99.40.00 as specified in additional U.S. note 3 to section VI. Serves as intermediate for detergents and phenolic resins.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If phenol function predominates over sulfonation
Phenolic compounds with substituents classified later per numerical order rule.
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Import Tips & Compliance
• Confirm alkyl substitution pattern via NMR or GC-MS for accurate description
• Ship in stabilized form only if necessary for transport per chapter notes
• Prevent aggregation with anti-caking agents that alter classification
Related Products under HTS 2904.99.40.00
Sodium Dodecylbenzene Sulfonate (SDBS)
Sodium dodecylbenzene sulfonate is an anionic surfactant derived from alkylbenzene through sulfonation, featuring a sulfonated aromatic hydrocarbon structure. It falls under HTS 2904.99.40.00 as a sulfonated derivative of an aromatic hydrocarbon, specifically listed in additional U.S. note 3 to section VI for such surface-active agents. Commonly used in detergents and emulsifiers.
p-Toluenesulfonic Acid (PTSA)
p-Toluenesulfonic acid is a strong organic acid obtained by sulfonation of toluene, fitting the definition of sulfonated aromatic hydrocarbons. It qualifies for HTS 2904.99.40.00 as described in additional U.S. note 3 to section VI, used as a catalyst in esterification and polymerization. The monohydrate form is also common in imports.
Benzenesulfonic Acid
Benzenesulfonic acid is the simplest sulfonated aromatic hydrocarbon, produced by direct sulfonation of benzene. Falls squarely under HTS 2904.99.40.00 per additional U.S. note 3 to section VI for such derivatives. Used in dyestuff manufacturing and as a chemical intermediate.
Linear Alkylbenzene Sulfonic Acid (LABSA)
Linear alkylbenzene sulfonic acid is a sulfonic acid produced by sulfonation of linear alkylbenzenes, a classic example of a nitrated or sulfonated aromatic hydrocarbon derivative. Classified under HTS 2904.99.40.00 due to its listing in additional U.S. note 3 to section VI for such industrial surfactants. Primarily used in manufacturing liquid detergents.
Dodecylbenzene Sulfonic Acid
Dodecylbenzene sulfonic acid results from sulfonation of dodecylbenzene, an aromatic hydrocarbon with a long alkyl chain. It is covered by HTS 2904.99.40.00 under additional U.S. note 3 to section VI as a key surfactant intermediate. Widely imported for conversion to sodium salts in cleaning products.