Tariff reference › Chapter 29 › 2931.48.00.00
HTS 2931.48.00.00 — 3,9-Dimethyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro [5.5] undecane 3,9-dioxide
The current US import duty for 3,9-Dimethyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro [5.5] undecane 3,9-dioxide (HTS 2931.48.00.00) — the base rate, any Section 301/232/122 surcharge that applies, and what's changed recently.
Other organo-inorganic compounds: › Non-halogenated organo-phosphorous derivatives: › 3,9-Dimethyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro [5.5] undecane 3,9-dioxide
Current US duty rate
| Column 1 (General / MFN) | 3.7% |
|---|---|
| Special (FTA programs) | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) |
| Column 2 (other) | 25% |
Additional duties may apply, depending on country of origin: 9903.90.08.
Alert me when this code changes (free) See all recorded changes
Programmatic access: the full duty stack (base + surcharges + MPF/HMF for a given origin & value) is at /duty?code=2931.48.00.00&origin=&value=. Current as of USITC 2026HTSRev13 (synced 2026-07-29).