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HSChapter 29
U.S. imports of dinonyl and didecyl orthophthalates (HS 291733) totaled $8.6M in June 2026, traded with 7 countries.
Importers of Dinonyl and Didecyl Orthophthalates paid $1.4M in duties in June 2026 — an effective duty rate of 16% on $8.5M in dutiable value, based on actual customs collections rather than the published tariff schedule. Dinonyl and Didecyl Orthophthalates imports of $8.6M in June 2026 ran 95% above the year-to-date monthly average of $4.4M.
Dinonyl and didecyl orthophthalates — particularly diisodecyl phthalate (DIDP) and diisononyl phthalate (DINP) — are higher-molecular-weight PVC plasticizers favored for wire and cable, flooring, and automotive applications where low volatility and heat stability are required. Germany leads US supply under this heading, followed by South Korea and Canada, reflecting European and Asian specialty chemical production strength. The US schedule separates diisodecyl orthophthalates (2917330010) from other dinonyl or didecyl variants (2917330050), a distinction relevant to product specification documentation. These compounds face evolving regulatory review under CPSC and EPA frameworks.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Diisodecyl orthophthalate (DIDP) has its own 10-digit line at 2917330010, while other dinonyl or didecyl orthophthalates — including DINP and mixed-chain variants — fall under 2917330050. The distinction requires the importer to confirm the specific isomer or carbon-chain composition from the supplier's technical data sheet, as misclassification between these lines can affect duty liability and trade-remedy applicability.
DINP and DIDP are subject to interim restrictions under CPSIA for certain children's products pending further CPSC review, but their regulatory status differs from the permanent ban on DEHP. Importers of these plasticizers for consumer or children's product applications should monitor active CPSC rulemaking and consult legal counsel, as the regulatory landscape for higher-molecular-weight phthalates continues to evolve.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| GERMANY | $7.1M | -- | -$7.1M |
| CANADA | $145K | $1.2M | +$1.0M |
| MEXICO | -- | $1.1M | +$1.1M |
| TAIWAN | $813K | -- | -$813K |
| KOREA, SOUTH | $462K | -- | -$462K |
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 |
|---|---|---|---|---|---|
| 2917330050 | OTHER DINONYL OR DIDECYL ORTHOPHTHALATES | $8.6M | 16.03% | 99.25% | $1.4M |
| 2917330010 | DIISODECYL ORTHOPHTHALATES | $0 | -- | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2917330010 | DIISODECYL ORTHOPHTHALATES | $1.3M |
| 2917330050 | OTHER DINONYL OR DIDECYL ORTHOPHTHALATES | $1.3M |
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 |
|---|---|---|---|
| Pennsylvania | $6.2M | $362K | -$5.8M |
| New Jersey | $1.1M | $480K | -$618K |
| Louisiana | $398K | $752K | +$354K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| CHESTER, PA | $6.1M | -- | -$6.1M |
| NEWARK, NJ | $1.1M | -- | -$1.1M |
| HOUSTON, TX | $108K | $443K | +$336K |