2901.23.00.00/Isobutylene Research Grade/Mexico

Isobutylene Research Grade from Mexico

Ultra-high purity isobutylene (>99.99%) for laboratory and pharmaceutical synthesis, classified under HTS 2901.23.00.00 as a butene isomer.

Duty Rate — Mexico → United States

10%

Rate breakdown

9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
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Import Tips

• Include lot-specific purity certificates from accredited labs

• Small cylinder shipments require special academic/research import permits

• Distinguish from fuel-grade isobutylene to avoid Chapter 27/38 classifications

Isobutylene Research Grade from Mexico — Import Duty Rate | HTS 2901.23.00.00