Naphthalene Sulfonate Dispersant from Japan
Naphthalene sulfonate is a classic aromatic dispersant for pigments and dyes, classified in HTS 3402.49.10.00 due to its fused aromatic ring structure and surface-active properties. Key in concrete admixtures and ink manufacturing.
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
• Document dispersancy performance to support 3402 classification over Chapter 29
• Provide molecular structure confirming aromatic modification
• Avoid retail sale packaging which triggers different subheadings