What is HS code 2837.20?

HS code 2837.20 covers: Complex cyanides. It belongs to chapter 28 (Inorganic chemicals) of the Harmonized System.

What is the US import duty for HS code 2837.20?

The US general (normal trade relations) rates under this subheading range: 1.1% - 1.7%. 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 2837.20?

The UK extends 2837.20 to 3 declarable 10-digit commodity codes, starting with 2837200000. The full code goes on the UK customs declaration.

Chapter 28 · Inorganic chemicals · Section 6

HS Code 2837.20

Complex cyanides

Heading 2837: Cyanides, cyanide oxides and complex cyanides

US duty (general)

1.1% - 1.7%

US HTS lines

EU CN codes

UK commodity codes

Unit

US HTS + UK Tariff v4.0.1596 · updated 2026-09-10 · sources

United States - HTS lines under 2837.20

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
2837.20.10	Potassium ferricyanide	1.1%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	5.1%	kg
2837.20.51	Other	1.7%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	8.5%	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.

Customs value (USD) Quantity (kg)

European Union - CN codes under 2837.20

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
2837 20 00	Complex cyanides	EU duty (TARIC) →

United Kingdom - commodity codes under 2837.20

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
2837 20 00 00	Complex cyanides	UK duty & VAT →
2837 20 00 10	Tetrasodium hexacyanoferrate (II), (CAS RN 13601-19-9)	UK duty & VAT →
2837 20 00 90	Other	UK duty & VAT →

Not a customs ruling. Classification is determined by the importing country's customs authority and depends on the exact product. This page is reference information from official published schedules, not legal advice. For a binding decision, request a ruling (US: CBP CROSS · UK: HMRC ATaR · EU: BTI).

Other subheadings in 2837

2837.00 2837 Cyanides, cyanide oxides and complex cyanides 2837.11 Of sodium 2837.19 Other 2837.20 Complex cyanides

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.