Liquid Polybutene L-14E from Canada
Liquid polybutene L-14E (viscosity 140 cSt) is a low molecular weight olefin polymer imported under HTS 3902.90.00 for use in lubricants and caulks. Isobutylene monomer >95% by weight in primary liquid form.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Classify as UN1268 liquid per DOT; provide flash point data (>200°C)
• Avoid drum linings reactive with olefins
• Temperature-control shipments above 15°C