Chapter 28 · Inorganic chemicals · Section 6
HS Code 2850.00
Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading 2849
US HTS + UK Tariff v4.0.1633 · updated 2026-10-21 · sources
Rates on this page are the official published schedule rates, shown for information. This is not a customs ruling: preference programs, Section 232/301 surcharges and per-shipment fees can change what you actually pay.
United States - HTS lines under 2850.00
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 |
|---|---|---|---|---|---|
| 2850.00.05 | Of calcium | Free | - | 25% | kg |
| 2850.00.07 | Of titanium | 4.9% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 30% | kg |
| 2850.00.10 | Of tungsten | 5.5% | Free (A+,AU,BH,CL,CO,D,E,IL, JO,KR,MA, OM,P, PA,PE,S,SG) | 45.5% | kg, W kg |
| 2850.00.20 | Of vanadium | 5.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 40% | kg, V kg |
| 2850.00.50 | Other | 3.7% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% | kg |
Estimate the US duty runs in your browser · no caps
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 2850.00
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 | |
|---|---|---|
| 2850 00 90 | Borides | EU duty (TARIC) → |
| 2850 00 60 | Azides; silicides | EU duty (TARIC) → |
| 2850 00 20 | Hydrides; nitrides | EU duty (TARIC) → |
| 2850 00 00 | 2850 00 Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading 2849 | EU duty (TARIC) → |
United Kingdom - commodity codes under 2850.00
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 | |
|---|---|---|
| 2850 00 00 00 | Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading 2849 | UK duty & VAT → |
| 2850 00 20 00 | Hydrides; nitrides | UK duty & VAT → |
| 2850 00 20 10 | Silane (CAS RN 7803-62-5) | UK duty & VAT → |
| 2850 00 20 40 | Germanium tetrahydride (CAS RN 7782-65-2) | UK duty & VAT → |
| 2850 00 20 60 | Disilane (CAS RN 1590-87-0) | UK duty & VAT → |
| 2850 00 20 70 | Cubic Boron nitride (CAS RN 10043-11-5) | UK duty & VAT → |
| 2850 00 20 80 | Arsine (CAS RN 7784-42-1) with a purity by volume of 99,999% or more, for use in the production of semiconductors | UK duty & VAT → |
| 2850 00 20 90 | Other | UK duty & VAT → |
| 2850 00 60 00 | Azides; silicides | UK duty & VAT → |
| 2850 00 60 10 | Sodium azide (CAS RN 26628-22-8) | UK duty & VAT → |
| 2850 00 60 19 | Other | UK duty & VAT → |
| 2850 00 60 91 | Calcium silicon - a chemical compound that contains by weight 16 % or more of calcium, 45 % or more of silicon, less than 14 % of iron and not more than 10 % of any other element; whether or not presented in bulk, packaged in bags or in steel drums, enclosed in steel sheets (or cored wire), or otherwise presented | UK duty & VAT → |
| 2850 00 60 95 | Other | UK duty & VAT → |
| 2850 00 90 00 | Borides | UK duty & VAT → |
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.
Frequently asked questions
Common questions about HS code 2850.00.
What is HS code 2850.00?
HS code 2850.00 covers: Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading 2849. It belongs to chapter 28 (Inorganic chemicals) of the Harmonized System.
What is the US import duty for HS code 2850.00?
The US general (normal trade relations) rates under this subheading range: Free - 5.5%. Preference programs and Section 232/301 surcharges can change the effective rate; see the HTS lines for detail.
What is the UK commodity code for 2850.00?
The UK extends 2850.00 to 14 declarable 10-digit commodity codes, starting with 2850000000. The full code goes on the UK customs declaration.