Chapter 39 · Plastics and articles thereof · Section 7
HS Code 3910.00
Silicones in primary forms
US HTS + UK Tariff v4.0.1596 · updated 2026-09-10 · sources
United States - HTS lines under 3910.00
Source: official Harmonized Tariff Schedule (USITC). "General" is the normal-trade-relations rate; "Special" lists preference programs; "Other" is the column-2 rate. Additional Section 232/301 duties may apply on top.
| HTS code | Description | General | Special | Other | Unit |
|---|---|---|---|---|---|
| 3910.00.00 | Silicones in primary forms | 3% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 25% | kg |
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Enter the customs value (and quantity, when a rate is per-unit) to estimate the general-rate duty per HTS line. Estimates exclude Section 232/301 surcharges, MPF/HMF and fees. Not a customs ruling.
European Union - CN codes under 3910.00
Source: EU Combined Nomenclature (Eurostat, © European Union, reused per Decision 2011/833/EU). Duty rates and measures live in TARIC; each code links to the official consultation.
| CN code | Description | |
|---|---|---|
| 3910 00 00 | 3910 00 00 Silicones in primary forms | EU duty (TARIC) → |
United Kingdom - commodity codes under 3910.00
Source: UK Integrated Online Tariff (Open Government Licence v3.0). Declarable 10-digit codes go on the customs declaration; check the official page for the current duty and VAT measures.
| Commodity code | Description | |
|---|---|---|
| 3910 00 00 00 | Silicones in primary forms | UK duty & VAT → |
| 3910 00 00 10 | Liquid poly(methylhydrosiloxane) with terminal trimethylsilyl groups (CAS RN 63148-57-2) with a purity by weight of 99,9 % or more | UK duty & VAT → |
| 3910 00 00 15 | Dimethyl, methyl(propyl(polypropylene oxide)) siloxane (CAS RN 68957-00-6), trimethylsiloxy-terminated | UK duty & VAT → |
| 3910 00 00 20 | Block copolymer of poly(methyl-3,3,3-trifluoropropylsiloxane) and poly[methyl(vinyl)siloxane] | UK duty & VAT → |
| 3910 00 00 25 | Preparations containing by weight:<br> <br><br><br>- 10 % or more, 2-hydroxy-3-[3-[1,3,3,3-tetramethyl-1-[(trimethylsilyl)oxy] disiloxanyl] propoxy] propyl-2-methyl-2-propenoate (CAS RN 69861-02-5)and<br> <br><br><br>- 10 % or more, α-Butyldimethylsilyl- ω -3-[(2-methyl-1-oxo-2-propen-1-yl)oxy]propyl-terminated silicone polymer (CAS RN 146632-07-7)<br> | UK duty & VAT → |
| 3910 00 00 35 | Preparations containing by weight:<br> <br><br><br>- 30 % or more, α -Butyldimethylsilyl- ω -(3-methacryloxy-2-hydroxypropyloxy)propyldimethylsilyl-polydimethylsiloxane (CAS RN 662148-59-6) and<br> <br><br><br>- 10 % or more, N,N - Dimethylacrylamide (CAS RN 2680-03-7)<br> | UK duty & VAT → |
| 3910 00 00 40 | Silicones of a kind used in the manufacture of long term surgical implants | UK duty & VAT → |
| 3910 00 00 45 | Dimethyl Siloxane, hydroxy-terminated polymer with a viscosity of|38-100|mPa·s (CAS RN 70131-67-8) | UK duty & VAT → |
| 3910 00 00 50 | Silicone based pressure sensitive adhesive in solvent containing copoly(dimethylsiloxane/diphenylsiloxane) gum | UK duty & VAT → |
| 3910 00 00 55 | Preparation containing by weight:<br> <br><br><br>- 55 % or more but not more than 65 % of vinyl terminated polydimethylsiloxane (CAS RN 68083-19-2),<br> <br><br><br>- 30 % or more but not more than 40 % of dimethylvinylated and trimethylated silica (CAS RN 68988-89-6), and<br> <br><br><br>- 1 % or more but not more than 5 % of silicic acid, sodium salt, reaction products with chlorotrimethylsilane and isopropyl alcohol (CAS RN 68988-56-7)<br> | UK duty & VAT → |
| 3910 00 00 70 | Passivating silicon coating in primary form, to protect edges and prevent short circuits in semiconductor devices | UK duty & VAT → |
| 3910 00 00 85 | Two-component silicone, with a viscosity of the mixture of 3 000 cps or more, but not more than 6 000 cps (according to standard GB/T 2794) for use as an electrical insulation material in solar panels junction box in the production of solar panels | UK duty & VAT → |
| 3910 00 00 90 | Other | UK duty & VAT → |
Other subheadings in 3910
Sources: U.S. International Trade Commission, Harmonized Tariff Schedule (public domain) · EU Combined Nomenclature © European Union, Eurostat (Decision 2011/833/EU) · UK Integrated Online Tariff, contains public sector information licensed under the Open Government Licence v3.0. Data refreshed weekly. Details on About & Data Sources.