4-Dimethylaminobenzaldehyde from China
4-Dimethylaminobenzaldehyde (DMAB) is an aromatic amino-aldehyde explicitly listed in HTS 2922.39.1000, containing both amino and aldehyde oxygen functions. Widely used as a reagent for indole detection and in analytical chemistry.
Duty Rate — China → United States
18.3%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide usage declaration as analytical reagent to distinguish from dye applications
• Ensure 99%+ purity certification; impurities may affect Chapter 29 eligibility
• Label as toxic if concentrated; follow DOT hazardous shipping requirements