Diethyl Tartrate from Canada
Diethyl tartrate is an ester of tartaric acid used as a chiral building block in organic synthesis and fragrances. It is classified under HTS 2918.13.5000 as an 'other' ester of tartaric acid per Chapter 29 note 3(A) for ester classification. The alcohol function without additional oxygen defines its placement.
Duty Rate — Canada → United States
110%
Rate breakdown
9903.04.6095.6%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Confirm ester purity via GC-MS analysis; declare exact optical isomer (L/D/meso) for statistical reporting; hazardous material shipping docs required for flammables