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HSChapter 29
U.S. imports of esters of orthophthalic acid (nesoi) (HS 291734) totaled $1.4M in April 2026, traded with 13 countries.
Importers of Esters of Orthophthalic Acid (NESOI) paid $61K in duties in April 2026 — an effective duty rate of 8.1% on $754K in dutiable value, based on actual customs collections rather than the published tariff schedule. Esters of Orthophthalic Acid (NESOI) imports of $1.4M in April 2026 ran 43% below the year-to-date monthly average of $2.5M.
Last updated: April 2026 dataOrthophthalic acid esters not elsewhere specified — including dibutyl phthalate (DBP) and a range of specialty phthalate esters — serve as plasticizers, solvents, and chemical intermediates across adhesives, coatings, and pharmaceutical excipient applications. Canada is the leading US supplier under this heading, with India and Sweden also significant sources. The US schedule distinguishes dibutyl orthophthalates (2917340110) from all other orthophthalic acid esters (2917340150), and DBP specifically is subject to regulatory restrictions in consumer products under CPSIA. Importers should verify end-use compliance requirements, as phthalate ester regulations vary significantly by application and jurisdiction.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
DBP (2917340110) is separately enumerated because of its distinct commercial significance and regulatory profile — it is permanently banned above 0.1% in children's toys and child care articles under CPSIA, and its specific identification in the tariff schedule facilitates targeted enforcement and trade data collection. All other orthophthalic acid esters not specifically named elsewhere are captured under 2917340150.
Importers should obtain a supplier certificate of analysis confirming the chemical identity (CAS number, IUPAC name, and molecular structure), as well as a manufacturer's declaration of the production process. If the product could plausibly be classified as a dioctyl, dinonyl, or didecyl phthalate under headings 291732 or 291733, a binding ruling request to CBP is advisable to avoid misclassification risk.
| Country | Imports | Exports | Balance |
|---|---|---|---|
| CANADA | $316K | $712K | +$396K |
| BELGIUM | -- | $438K | +$438K |
| INDIA | $412K | -- | -$412K |
| MEXICO | -- | $411K | +$411K |
| KOREA, SOUTH | $274K | -- | -$274K |
Monthly import values over time
Supplier Network
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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 |
|---|---|---|---|---|
| 2917340150 | OTHER ESTERS OF ORTHOPHTHALIC ACID | $998K | 8.51% | $52K |
| 2917340110 | DIBUTYL ORTHOPHTHALATES | $419K | 6.50% | $10K |
OTHER ESTERS OF ORTHOPHTHALIC ACID
DIBUTYL ORTHOPHTHALATES
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2917340150 | OTHER ESTERS OF ORTHOPHTHALIC ACID | $1.9M |
| 2917340110 | DIBUTYL ORTHOPHTHALATES | $137K |
OTHER ESTERS OF ORTHOPHTHALIC ACID
554.9K kg
DIBUTYL ORTHOPHTHALATES
44.2K 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 |
|---|---|---|---|
| New Jersey | $166K | $1.2M | +$1.0M |
| Texas | $223K | $317K | +$94K |
| Ohio | $310K | -- | -$310K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| BUFFALO-NIAGARA FALLS, NY | -- | $521K | +$521K |
| CHESTER, PA | -- | $438K | +$438K |
| PORT HURON, MI | $264K | $19K | -$246K |