Turnbull's Blue Pigment Preparation from Canada
Turnbull's blue, a ferrous hexacyanoferrate pigment used in analytical chemistry stains and inks. Classified in HTS 3206.49.55.00 for hexacyanoferrate-based inorganic coloring matter. It offers a softer blue tone than Prussian blue.
Duty Rate — Canada → United States
13.7%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Lab-grade pigments require USP/ACS compliance certs for import validation
• Specify 'pigment and preparation' in commercial invoice to distinguish from raw salts
• Watch for misclassification as extenders if used in oil paints