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HSChapter 29
U.S. imports of naphthylamines and their derivatives; salts (HS 292145) totaled $59K in April 2026, traded with 5 countries.
Naphthylamines and Their Derivatives; Salts imports of $59K in April 2026 ran 71% below the year-to-date monthly average of $202K.
Last updated: April 2026 dataAlpha- and beta-naphthylamine derivatives are specialized aromatic amines used predominantly as intermediates for azo dyes, optical brighteners, and rubber antioxidants; the heading includes naphthalenedisulfonic and naphthalenesulfonic acid derivatives such as Tobias acid (2-amino-1-naphthalenesulfonic acid, line 2921459010) that are key building blocks in reactive dye synthesis. Canada and India are the leading suppliers of US imports under this heading. Importers should note that 1-naphthylamine (alpha-naphthylamine) itself is a recognized carcinogen subject to occupational exposure controls, and its trade requires careful hazard communication documentation.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Alpha-naphthylamine is classified as a probable human carcinogen and is subject to OSHA Hazard Communication Standard requirements, including a compliant Safety Data Sheet. TSCA import certification is also required. Importers and downstream handlers must ensure proper labeling and exposure controls are in place before distribution.
Tobias acid (CAS 81-16-3) is a sulfonated naphthylamine used as a coupling component in the synthesis of azo dyes for textiles and leather. Its commercial volume and distinct chemical identity justify a dedicated 10-digit line, which also facilitates trade statistics tracking for this specific intermediate.
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2921452500 | MIXTURES 5-AND 8-AMINO-2-NAPHTHALENESULFONIC ACID | $25K | 10.00% | $2K |
| 2921456000 | AROM MONOAMINES AND DER OF PROD IN US NT 3 SEC 6 | $18K | -- | -- |
| 2921459090 | AROMATIC MONOAMINES & DERIVATIVES & SALTS NESOI | $16K | 0.00% | -- |
| 2921451000 | N-PHENYL-2-NAPHTHYLAMINE, ETC | $0 | -- | -- |
| 2921452000 | 3-AMINO-2,7-NAPHTHALENEDISULFONIC ACID, ETC | $0 | -- | -- |
MIXTURES 5-AND 8-AMINO-2-NAPHTHALENESULFONIC ACID
AROM MONOAMINES AND DER OF PROD IN US NT 3 SEC 6
AROMATIC MONOAMINES & DERIVATIVES & SALTS NESOI
N-PHENYL-2-NAPHTHYLAMINE, ETC
3-AMINO-2,7-NAPHTHALENEDISULFONIC ACID, ETC
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2921450000 | 1-NAPHTHYLAMINE, 2-NAPHTHYLA & THEIR DERIVATIVES | $475K |
1-NAPHTHYLAMINE, 2-NAPHTHYLA & THEIR DERIVATIVES
53.4K kg
NUCLEIC ACIDS & SALTS; OTHER HETEROCYCLIC CMP, NES
HS 293499
HETEROCYCLIC COMP W NITROGEN HETERO-ATM ONLY NESOI
HS 293399
POLYPEPTIDE PROTEIN& GLYCOPROTEIN HORMONES &DERIV
HS 293719
CMPDS CONT AN UNFUSED PYRIDINE RING ETC NESOI
HS 293339
COMP WITH PYRIMIDINE OR PIPERAZINE RING, NESOI
HS 293359
ANTIBIOTICS, NESOI
HS 294190
| State | Imports | Exports | Balance |
|---|---|---|---|
| South Carolina | $43K | $419K | +$376K |
| Massachusetts | -- | $23K | +$23K |
| Illinois | -- | $20K | +$20K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| CHARLESTON, SC | $43K | $397K | +$355K |
| LAREDO, TX | -- | $23K | +$23K |
| SAVANNAH, GA | -- | $21K | +$21K |