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HSChapter 29
U.S. imports of selected carboxylic acids (HS 291800) totaled $5.6M in June 2026, traded with 1 country.
Classified under a single 10-digit line (2918000000), this heading functions as a statistical catch-all for certain carboxylic acids that are enumerated separately in US trade schedules. Canada is the dominant US supplier under this heading. Because the heading consolidates chemically distinct compounds, precise product identification at the time of entry is essential to confirm that the article does not belong in a more specific subheading within Chapter 29.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
This heading captures carboxylic acids that are specifically enumerated in the US tariff schedule but do not fit the more detailed subheadings within Chapter 29. If a product has a dedicated HS6 or 10-digit line elsewhere in Chapter 29, it should be classified there; this heading applies only when the US schedule explicitly directs the article to 2918000000.
Standard commercial entry documentation applies — commercial invoice, packing list, and bill of lading. For industrial-grade acids, a Safety Data Sheet (SDS) is advisable. If the acid has pharmaceutical or food-additive applications, additional FDA review may be triggered; consult a licensed customs broker to confirm the correct entry pathway.
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Monthly import values over time
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2918000000 | SELECTED CARBOXYLIC ACIDS | $5.6M | 0.03% | 0.22% | $2K |
NUCLEIC ACIDS & SALTS; OTHER HETEROCYCLIC CMP, NES
HS 293499
POLYPEPTIDE PROTEIN& GLYCOPROTEIN HORMONES &DERIV
HS 293719
CMPDS CONT AN UNFUSED PYRIDINE RING ETC NESOI
HS 293339
BENZENE
HS 290220
HETEROCYCLIC COMP W NITROGEN HETERO-ATM ONLY NESOI
HS 293399
HETEROCYCLIC COMP WITH UNFUSED PYRAZOLE RING NESOI
HS 293319
| State | Imports | Exports | Balance |
|---|---|---|---|
| Massachusetts | $1.4M | -- | -$1.4M |
| Illinois | $686K | -- | -$686K |
| New York | $349K | -- | -$349K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| DETROIT, MI | $2.9M | -- | -$2.9M |
| BUFFALO-NIAGARA FALLS, NY | $1.4M | -- | -$1.4M |
| PORT HURON, MI | $1.2M | -- | -$1.2M |