Lactic Acid Oligomers from China
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 — China → United States
16.5%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
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