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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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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
Monthly import values over time
| 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 |