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6-Amino-1-naphthalenesulfonic Acid

Naphthalenic amine with sulfonic acid group used in dye intermediates. Falls under 2929.90.50 as primary nitrogen-function compound despite sulfonation, per Chapter 29 notes on compound derivatives. Not classified as sulfonated hydrocarbon.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China6.5%+25.0%31.5%
🇲🇽Mexico6.5%—6.5%
🇨🇦Canada6.5%—6.5%
🇩🇪Germany6.5%—6.5%
🇯🇵Japan6.5%—6.5%

More Specific Codes

This product may fall under a more specific subheading:

2929.90.50.15N,N-Dimethylphosphoramidic dichloride
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2929.90.50.18Other
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2929.90.50.20Dialkyl (methyl, ethyl, n-propyl or isopropyl)-N,N-dialkyl (methyl, ethyl, n-propyl or isopropyl) phosphoramidates
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2929.90.50.30N-(Dialkyl (≤C10, incl. cycloalkyl) amino))alkylidene (H or ≤C10, incl. cycloalkyl) phosphonamidic fluorides and corresponding alkylated or protonated salts
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2929.90.50.40O-Alkyl (H or ≤C10, incl. cycloalkyl) N-(dialkyl (≤C10, incl. cycloalkyl) amino))alkylidene (H or ≤C10, incl. cycloalkyl) phosphoramidofluoridates and corresponding alkylated or protonated salts
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2929.90.50.95Other
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Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

2904.20Lower: 15.5% vs 31.5%

If sulfonic acid group dominates classification

Sulfonated derivatives class by principal function; nitrogen takes precedence in numerical order

2921.42Lower: 16.5% vs 31.5%

If o-/m-/p-phenylenediamine type structure

Specific amine headings have priority over general 'other' nitrogen functions

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Import Tips & Compliance

• Sulfonic acid content doesn't change nitrogen classification; pH stability cert required; Distinguish from purified dye forms in Chapter 32

Related Products under HTS 2929.90.50

N-Isopropyl-N-phenyl-p-phenylenediamine

This is a chemically defined organic compound featuring nitrogen functions including an amine group linked to aromatic rings. Classified under HTS 2929.90.50 as it contains 'other nitrogen function' groups not covered by more specific nitrogen-function headings in Chapter 29. Commonly used as an antidegradant in rubber production.

4,4'-Methylenebis(2-chloroaniline)

A di-amine compound with other nitrogen functions and chlorinated aromatic rings, used as a curing agent in polyurethane production. Falls under 2929.90.50 as 'other' nitrogen-function compounds outside specific amine headings. The chloro substituents are compound derivatives covered by Chapter 29 notes.

Diphenylguanidine

An organic compound with guanidine nitrogen functionality used as a rubber accelerator. Classified in 2929.90.50 as it features 'other nitrogen function' beyond specific amide, imine, or hydrazine categories. Meets Chapter 29 requirement for chemically defined compounds.

N-Cyclohexyl-N'-phenyl-p-phenylenediamine

Antioxidant for rubber and plastics featuring diarylamine nitrogen functions. HTS 2929.90.50 covers this as 'other nitrogen function' compound with mixed aromatic-aliphatic amine structure. Chemically defined per Chapter 29 note (a).

Melamine (Cyanurotriamide)

Triazine compound with multiple amide nitrogen functions used in resin production. Classifies under 2929.90.50 as 'other' nitrogen-function compound not fitting specific triazine or amide headings. Excluded from Chapter 30 immunological products.

Benzotriazole

Fused heterocyclic compound with triazole nitrogen functions used as corrosion inhibitor. Classified 2929.90.50 as 'other nitrogen function' since not fitting specific heterocycle headings 2933-2934. Chemically defined benzotriazole base.