Diethyl Oxalate from Canada
Diethyl oxalate ((COOC2H5)2) is the ethyl ester of oxalic acid used in pharmaceutical synthesis and dye manufacturing. Specifically included in HTS 2917.11.00.00 as oxalic acid ester. Chapter notes confirm esters classified with parent acid occurring last in numerical order.
Duty Rate — Canada → United States
13.1%
Rate breakdown
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
• Certify ethyl ester content via refractive index (1.420-1.422) matching pharmacopeia standards
• Declare as flammable liquid UN2524 with proper Class 3 packaging and placarding
• Avoid shipping in steel drums; use HDPE or glass-lined containers due to ester hydrolysis