Phosphonate Plastic Additive 141 from China
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 — China → United States
112.5%
Rate breakdown
9903.04.6096.3%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, 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