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SITCSection 5
U.S. imports of acyclic, cyclanic, cyclenic & aromatic ethers and their derivatives (SITC 51616) totaled $8.6M in April 2026, traded with 28 countries.
Importers of Acyclic, Cyclanic, Cyclenic & Aromatic Ethers and Their Derivatives paid $779K in duties in April 2026 — an effective duty rate of 15% on $5.3M in dutiable value, based on actual customs collections rather than the published tariff schedule. Acyclic, Cyclanic, Cyclenic & Aromatic Ethers and Their Derivatives imports of $8.6M in April 2026 ran 33% below the year-to-date monthly average of $12.9M.
Last updated: April 2026 dataSpanning a broad structural range from simple diethyl ether to complex aromatic ethers like diphenyl oxide, this heading covers acyclic, alicyclic, and aromatic ether compounds along with their halogenated, sulfonated, nitrated, or nitrosated derivatives. Aromatic ethers such as anisole and phenetole are important fragrance and pharmaceutical intermediates, while aliphatic ethers serve as industrial solvents and fuel additives. The structural diversity within this heading means that classification disputes often hinge on ring saturation and the presence of derivative substituents.
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Aromatic ethers contain at least one aryl group directly bonded to the ether oxygen (e.g., anisole, diphenyl ether), while acyclic ethers have only aliphatic carbon chains on both sides of the oxygen. This distinction matters because some aromatic ether derivatives may also qualify as phenol ethers or other more-specific chemical classes, potentially shifting the correct tariff line.
Certain ethers — notably diethyl ether — are monitored as List I or List II chemicals by the DEA due to their potential use in illicit drug manufacturing. Importers of regulated ether solvents must comply with DEA registration and reporting requirements in addition to standard customs entry procedures. EPA TSCA inventory status should also be confirmed for less-common ether derivatives.
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Monthly import values over time