Diethoxymethane (Formal) from China
Diethoxymethane, also known as formal, is a colorless liquid acetal formed from formaldehyde and ethanol. It falls under HTS 2911.00.50.00 as an acetal with oxygen function, used primarily as a solvent and chemical intermediate in organic synthesis. This chemically defined organic compound meets Chapter 29 note (a) for separate compounds.
Duty Rate — China → United States
40.3%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
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)
Import Tips
• Provide Certificate of Analysis (COA) verifying chemical identity and purity to confirm classification under Chapter 29
• Declare exact chemical composition; impurities must not exceed levels that alter essential character as an acetal
• Avoid misclassification as mixtures by ensuring single-compound status per chapter note (a)