U.S. exports of dinonyl and didecyl orthophthalates (HS 291733) totaled $2.5M in August 2026.
Importers of Dinonyl and Didecyl Orthophthalates paid $38K in duties in August 2026, an effective tariff rate of 4.65% of the $822K imported — duty actually collected as a share of that value, not the published tariff schedule. Dinonyl and Didecyl Orthophthalates imports of $822K in August 2026 ran 81% below the year-to-date monthly average of $4.3M.
Last updated: August 2026 dataDinonyl 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.
17 shipments/mo
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.
HSChapter 29
Trade Directory
List your company under HS 291733 — Dinonyl and Didecyl Orthophthalates, so the companies trading it can find you. Be the first supplier listed.
Subheading 8 of 13 in heading 2917
Subheading 291733 · $2.5M of $61.6M
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 | $786K | 4.29% | 31.05% | $34K |
| 2917330010 | Diisodecyl Orthophthalates | $36K | 12.50% | 100.00% | $5K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2917330050 | Other Dinonyl or Didecyl Orthophthalates | $1.2M |
| 2917330010 | Diisodecyl Orthophthalates | $1.2M |
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
$822KYoY · free account
Exports
$2.5MYoY · free account
12-mo low · imports
YoY · free accountOver the twelve months to August 2026, the U.S. imported $53.3M of Dinonyl and Didecyl Orthophthalates.
Through August 2026. Source: U.S. Census Bureau.
Exports · August 2026
destination
Canada and Mexico together take 95% of it.
customs district
origin
entry
rate provision · imports
72.1% enters free of duty; duty collected equals 4.65% of total import value.