Sodium Hexametaphosphate (SHMP) from Japan
Sodium hexametaphosphate, a cyclic polyphosphate, functions as a water softener, dispersant in ceramics, and sequestrant in food processing. It qualifies for HTS 2835.39.5000 as an 'other' polyphosphate meeting chemical definition criteria.
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
• Submit detailed chemical structure diagrams to confirm metaphosphate classification
• Comply with TSCA inventory requirements for new chemical substances
• Avoid bulk packaging that could lead to classification as unprepared material