CAS 65481-32-7 3,9-Dimethylspiro[5.5]undecane Phosphonate Dioxide from China
Identified by CAS 65481-32-7, this is pure 3,9-dimethyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane 3,9-dioxide, a building block for organophosphorus ligands. HTS 2931.48.00.00 covers it as a non-halogenated organo-phosphorus derivative.
Duty Rate — China → United States
16.2%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Reference CAS number on all shipping docs for rapid identification
• Ensure no impurities push it into mixtures excluded by Chapter notes
• Use UN-approved packaging for phosphorus compounds