Lactic Acid Oligomers from Canada
Linear oligomers of lactic acid (3-10 monomer units) with terminal carboxylic acid and hydroxyl functions. Classified 2918.99.5000 due to multiple oxygen functions on the hydroxy acid chain. Used as biodegradable plasticizers and pharma intermediates.
Duty Rate — Canada → United States
4%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Provide GPC/SEC analysis showing MW 200-800 Da to distinguish from polymers (3903.19)
• Specify lactide content <1% to avoid lactone classification under 2932
• Biobased content certification may qualify for duty preference programs