Gypsum Board Dispersant Lignosulfonate from Germany
Low-viscosity ammonium lignosulfonate solution optimized for gypsum slurry flow in wallboard manufacturing. Derives from concentrated, desugared softwood pulp lyes qualifying for HTS 3804.00.5000.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.97, articles the product of a member state of the European Union, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 10 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Construction chemical importers need ASTM performance specs
• Shelf-life testing prevents rejection of aged product
• Multiple suppliers; verify consistent sulfonation degree