SITCSection 5
U.S. imports of saturated acyclic monocarboxylic acids (nes), anhydrides, halides, peroxides, and derivatives (SITC 51377) totaled $38.5M in April 2026, traded with 32 countries.
Importers of Saturated Acyclic Monocarboxylic Acids (NES), Anhydrides, Halides, Peroxides, and Derivatives paid $2.0M in duties in April 2026 — an effective duty rate of 6.2% on $32.0M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataAcetic anhydride — one of the most commercially significant compounds in this residual heading — is a controlled precursor chemical subject to DEA import permit requirements due to its use in illicit narcotics synthesis, making regulatory compliance a primary concern for legitimate industrial importers. Beyond acetic anhydride, this heading captures a diverse range of saturated fatty acid derivatives including propionic acid, caprylic acid, and their halogenated or sulfonated variants used in agrochemicals, pharmaceuticals, and specialty polymer production. The "not elsewhere specified" scope means classification disputes are common, and importers should document the precise chemical identity, CAS number, and intended use on entry paperwork.
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Acetic anhydride is a List II controlled chemical under the Chemical Diversion and Trafficking Act because it is a precursor in heroin synthesis. US importers must obtain a DEA import permit, maintain transaction records, and report imports above threshold quantities. Failure to comply carries significant civil and criminal penalties.
Because this heading captures acids and derivatives not classified elsewhere, customs brokers recommend including the full IUPAC name, CAS registry number, molecular formula, and a brief description of the manufacturing process or intended use in the entry package. This documentation supports correct classification and reduces the risk of a CF-28 request for additional information from CBP.
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| NETHERLANDS | $3.8M | $10.8M | +$7.0M |
| BELGIUM | $342K | $9.8M | +$9.4M |
| MEXICO | $4.7M | $5.4M | +$742K |
| GERMANY | $5.7M | $2.1M | -$3.6M |
| INDIA | $4.3M | $1.6M | -$2.7M |
Monthly import values over time