Diethoxymethane (Formal) from Japan
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 — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
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)