Isobutylene Research Grade from Germany
Ultra-high purity isobutylene (>99.99%) for laboratory and pharmaceutical synthesis, classified under HTS 2901.23.00.00 as a butene isomer.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
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