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SITCSection 5
U.S. imports of methacrylic acid and its salts and esters (SITC 51373) totaled $13.1M in April 2026, traded with 17 countries.
Importers of Methacrylic Acid and Its Salts and Esters paid $2.0M in duties in April 2026 — an effective duty rate of 15% on $13.0M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataMethyl methacrylate (MMA) — the dominant ester in this group — is the monomer feedstock for polymethyl methacrylate (PMMA), sold commercially as acrylic glass or Plexiglas, and is also a key input for acrylic coatings and adhesives. Methacrylic acid itself is used as a co-monomer in specialty polymers for automotive, construction, and electronics applications. Trade in MMA has been shaped by antidumping proceedings in multiple jurisdictions, and importers sourcing from certain Asian suppliers should verify the current status of any applicable trade remedy orders. Proper hazardous-materials classification under DOT regulations is required for shipments of these reactive monomers.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
MMA is a reactive monomer that can polymerize spontaneously if inhibitor levels (typically hydroquinone monomethyl ether, MEHQ) fall below specification during transit. Importers should require certificates of analysis confirming inhibitor content and ensure cold-chain or temperature-controlled logistics are in place, particularly for long ocean voyages.
Both the acid, its metal salts (e.g., sodium methacrylate), and its esters (e.g., methyl, ethyl, butyl methacrylate) fall within this SITC heading. However, at the HTS 10-digit level, each form may carry a distinct tariff line, so importers should work with a licensed customs broker to confirm the correct subheading for their specific compound.
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| BELGIUM | -- | $12.3M | +$12.3M |
| MEXICO | -- | $7.8M | +$7.8M |
| GERMANY | $4.7M | $166K | -$4.6M |
| CANADA | $121K | $3.3M | +$3.2M |
| KOREA, SOUTH | $2.1M | $689K | -$1.4M |
Monthly import values over time