Dimethyl Tartrate from China

Dimethyl tartrate serves as an intermediate in pharmaceutical synthesis and polymer production. Under HTS 2918.13.5000 as 'other' tartaric acid esters, it adheres to Chapter 29 rules for carboxylic acids with alcohol function. Its simple ester structure avoids reclassification.

Duty Rate — China → United States

41.9%

Rate breakdown

9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)

9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China

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Import Tips

• Supply synthesis pathway docs to prove ester identity; store/segregate from acids to prevent hydrolysis; check EU REACH for origin compliance