HS 2931-48 – 3,9-Dimethyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5] undecane 3,9-dioxide

Tariff data as of T2026-2, effective Sept 1, 2026, last verified Oct 21, 2026

3,9-Dimethyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5] undecane 3,9-dioxide

10-digit tariff items

• 2931-48-00-00 – 3,9-Dimethyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5] undecane 3,9-dioxide (MFN Free)