4-Dimethylaminobenzaldehyde from Mexico
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 — Mexico → United States
15.8%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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