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U.S. exports of isocyanates (HS 292910) totaled $32.5M in July 2026.
Importers of Isocyanates paid $479K in duties in July 2026 — an effective duty rate of 14% on $3.5M in dutiable value, based on actual customs collections rather than the published tariff schedule. Isocyanates imports of $3.6M in July 2026 ran 45% below the year-to-date monthly average of $6.4M.
Last updated: July 2026 dataSeveral lines within this heading carry Section 301 exposure, making origin a critical classification variable for US importers of these highly reactive industrial chemicals. Isocyanates — including toluene diisocyanate (TDI, covered under 2929101000 and 2929101500), methylene diphenyl diisocyanate (MDI, 2929108010), and hexamethylene diisocyanate (HDI, 2929103500) — are primary building blocks for polyurethane foams, coatings, adhesives, and elastomers. Germany leads US supply, followed by Hungary and China, reflecting the concentration of large-scale TDI and MDI production in Europe and Asia. Importers should verify whether specific isocyanate variants fall under chemical weapons convention-related controls or EPA TSCA reporting requirements.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
89 shipments/mo
Unmixed toluene diisocyanates (TDI) are classified under 2929101000, while 2,4- and 2,6-TDI mixtures fall under 2929101500. Methylene diphenylene isocyanate (MDI) has its own dedicated line at 2929108010. Importers should confirm the exact chemical identity and mixture status before filing, as misclassification between these lines can affect applicable duty rates and Section 301 exposure.
Isocyanates are not subject to FDA or USDA admissibility review, but certain variants — particularly those with dual-use potential — may require EPA TSCA certification or be subject to export/import controls under chemical weapons convention schedules. Importers should consult a licensed customs broker and verify TSCA compliance obligations before shipment.
HSChapter 29
Subheading 2 of 2 in heading 2929
Subheading 292910 · $3.6M of $14.7M
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ImportsExports
Imports
$3.6MYoY · Pro
Exports
$32.5MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
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 |
|---|---|---|---|---|---|
| 2929105500 | Isocyanates of Products in U.s.note 3 to Sect 6 | $2.6M | 16.57% | 100.00% | $427K |
| 2929102700 | N-Butylisocyanate; Cycloheryl Isocyanate; Etc. | $1.5M | 11.30% | 100.00% | $167K |
| 2929108090 | Other Isocyanates | $1.2M | 12.88% | 90.29% | $149K |
| 2929101500 | Mixtures of 2,4- and 2,6-Toluene Diisocyanates | $246K | 14.12% | 100.00% | $35K |
| 2929108010 | Methylenedi-Phenylene Isocyanate (mdi) | $224K | 13.81% | 83.72% | $31K |
| 2929101000 | Toluenediisocyanates (unmixed) | $179K | 14.44% | 100.00% | $26K |
| 2929103500 | 1-6 Hexamethylene Diisocyanate | $11K | 16.50% | 100.00% | $2K |
| 2929102000 | Bitolylene Diisocyanate(todi); 0-Isocyanc Acid Etc | $0 | -- | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2929108050 | Isocyanates, NESOI | $21.1M |
| 2929101500 | Mixtures of 2,4- and 2,6-Toluene Diisocyanates | $17.2M |
| 2929108010 | Methylenedi-Phenylene Isocyanate (mdi) | $1.7M |
| 2929101000 | Toluenediisocyanates (unmixed) | $1.0M |
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.
Exports · July 2026
destination
Brazil and Canada together take 42% of it.
customs district
origin
entry
rate provision · imports
1.1% enters free of duty; the effective duty rate is 13.47%.