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HSChapter 29
U.S. imports of esters of orthophthalic acid (nesoi) (HS 291734) totaled $3.9M in July 2026, traded with 15 countries.
Importers of Esters of Orthophthalic Acid (NESOI) paid $236K in duties in July 2026 — an effective duty rate of 7.6% on $3.1M in dutiable value, based on actual customs collections rather than the published tariff schedule. Esters of Orthophthalic Acid (NESOI) imports of $3.9M in July 2026 ran 35% above the year-to-date monthly average of $2.9M.
Last updated: July 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.
49 shipments/mo
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.
Subheading 7 of 13 in heading 2917
Subheading 291734 · $3.9M of $104.1M
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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 |
|---|---|---|---|---|---|
| 2917340150 | Other Esters of Orthophthalic Acid | $3.3M | 6.49% | 85.77% | $216K |
| 2917340110 | Dibutyl Orthophthalates | $571K | 3.43% | 41.49% | $20K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2917340150 | Other Esters of Orthophthalic Acid | $2.2M |
| 2917340110 | Dibutyl Orthophthalates | $26K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
ImportsExports
Imports
$3.9MYoY · Pro
Exports
$2.2MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Imports · July 2026
origin
Sweden and India together supply 66% of it.
customs district
destination
entry
rate provision · imports
20.7% enters free of duty; the effective duty rate is 6.04%.