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SITCSection 5
U.S. imports of styrene (SITC 51125) totaled $18.5M in April 2026, traded with 4 countries.
Styrene imports of $18.5M in April 2026 ran 22% above the year-to-date monthly average of $15.2M.
Last updated: April 2026 dataStyrene monomer is the essential building block for polystyrene, ABS resin, styrene-butadiene rubber (SBR), and a range of copolymers used in packaging, automotive, and construction applications. Classified as a possible human carcinogen by international health bodies, styrene imports trigger EPA TSCA certification requirements and must be accompanied by compliant Safety Data Sheets. Its high reactivity means temperature-controlled shipping with inhibitor addition is standard practice, and importers should confirm inhibitor type and concentration with suppliers to meet US handling specifications.
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Styrene polymerizes exothermically if not stabilized, so bulk shipments are transported with a polymerization inhibitor — typically 4-tert-butylcatechol (TBC) or similar — at specified concentration levels. Importers must verify that inhibitor concentration remains within the agreed specification upon arrival, as degradation during transit can create safety and quality issues. Certificates of analysis confirming inhibitor levels should be required from suppliers.
Importers must submit a TSCA certification (either positive or negative) with each entry. Because styrene is listed as a hazardous air pollutant and a substance under TSCA review, importers should also confirm whether any enhanced reporting obligations under EPA's Chemical Data Reporting rule apply to their import volumes and intended use.
| Country | Imports | Exports | Balance |
|---|---|---|---|
| MEXICO | -- | $72.0M | +$72.0M |
| BELGIUM | -- | $37.7M | +$37.7M |
| BRAZIL | -- | $28.5M | +$28.5M |
| NETHERLANDS | $9K | $28.4M | +$28.4M |
| CANADA | $18.5M | $5.7M | -$12.8M |
Monthly import values over time
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