Phosphonate Plastic Additive 141 from Japan
Phosphonate Plastic Additive 141, identified as bis(1-methylpentyl) methylphosphonate, enhances PVC plastisol flexibility and acts as a secondary plasticizer, classified precisely under HTS 2931.49.00.25. The direct phosphorus-carbon linkage defines its organo-inorganic status.
Duty Rate — Japan → United States
23.8%
Rate breakdown
9903.04.6211.3%Patented pharmaceutical articles that are the product of Japan, of a European Union member country, of South Korea, of Switzerland, or of Liechtenstein as provided for in subdivisions (c) and (f) of U.S. note 40 to this subchapter
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
• Use NMR or GC-MS analysis certificates to prove molecular structure matching HTS description
• Segregate from halogenated phosphonates in shipping to prevent cross-contamination and classification errors
• Calculate duties based on pure weight; additive carriers increase mixture classification risk