Modified Corn Starch for Drilling Fluids from Canada
High-stability modified corn starch used in oil drilling muds for viscosity control. Falls under HTS 3505.10.0040 as corn-derived modified starch for industrial use.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Include MSDS and OSHA compliance docs
• Declare as industrial chemical, not food
• Temperature/shear stability specs required