Chapter 29 · Organic chemicals · Section 6
HS Code 2931.90
Other
Heading 2931: Other organo-inorganic compounds
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 2931.90
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 |
|---|---|---|---|---|---|
| 2931.90.05 |
Aromatic > Diphenyldichlorosilane; and phenyltrichlorosilane |
Free | - | 15.4¢/kg + 68.5% | kg |
| 2931.90.10 |
Aromatic > 4,4'-Diphenylbisphosphonous acid, di(2',2",4',4"-di-tert-butyl)phenyl ester |
6.5% | Free (A+, AU, BH, CL,CO,D, E, IL, JO, KR, MA, OM, P, PA, PE, S, SG) | 15.4¢/kg + 40% | kg |
| 2931.90.15 |
Aromatic > Sodium tetraphenylboron |
5.8% | Free (A+, AU, BH, CL, CO, D, E, IL, JO, KR, MA, OM, P, PA, PE, S, SG) | 15.4¢/kg + 40% | kg |
| 2931.90.22 |
Aromatic > Other > Drugs |
6.5% | Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 67.5% | kg |
| 2931.90.26 |
Aromatic > Other > Pesticides |
6.5% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 40% | kg |
| 2931.90.30 |
Other > Other > Products described in additional U.S. note 3 to section VI |
6.5% | Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 68.5% | kg |
| 2931.90.60 |
Other > Other > Other |
6.5% | Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG) | 15.4¢/kg + 68.5% | kg |
| 2931.90.70 |
Other > N,N'-Bis(trimethylsilyl) urea; 3-(Hydroxymethylphosphinyl)-1-propanoic acid, 2-hydroxyethyl ester; and 2-Phosphonobutane-1,2,4-tricarboxylic acid and its salts |
Free | - | 25% | kg |
| 2931.90.90 |
Other > Other 8 statistical lines (10-digit)
|
3.7% | 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 2931.90
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 | |
|---|---|---|
| 2931 90 00 | Other | EU duty (TARIC) → |
United Kingdom - commodity codes under 2931.90
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 | |
|---|---|---|
| 2931 90 00 00 | Other | UK duty & VAT → |
| 2931 90 00 15 | Methylcyclopentadienyl manganese tricarbonyl (CAS RN 12108-13-3) containing not more than 4,9 % by weight of cyclopentadienyl manganese tricarbonyl | UK duty & VAT → |
| 2931 90 00 21 | (2-Fluoro-4-phenoxyphenyl)boronic acid (CAS RN 1414356-30-1) with a purity by weight of 95 % or more | UK duty & VAT → |
| 2931 90 00 23 | Ixazomib citrate (INNM) (CAS RN 1239908-20-3) with a purity by weight of 95 % or more | UK duty & VAT → |
| 2931 90 00 28 | Triethoxy(3-isocyanatopropyl)silane (CAS RN 24801-88-5) with a purity by weight of 96 % or more | UK duty & VAT → |
| 2931 90 00 30 | Tert-Butylchlorodimethylsilane (CAS RN 18162-48-6) with a purity by weight of 99 % or more | UK duty & VAT → |
| 2931 90 00 38 | 2-(Trimethylsilyl)ethoxymethyl chloride (CAS RN 76513-69-4) with a purity by weight of 98 % or more | UK duty & VAT → |
| 2931 90 00 40 | Chlorotrimethylsilane (CAS RN 75-77-4) with a purity by weight of 98 % or more | UK duty & VAT → |
| 2931 90 00 43 | Trimethylindium (CAS RN 3385-78-2) with a purity by weight of 99 % or more | UK duty & VAT → |
| 2931 90 00 48 | 4-Phenoxybenzeneboronic acid (CAS RN 51067-38-0) with a purity by weight of 98 % or more | UK duty & VAT → |
| 2931 90 00 50 | Trimethylsilane (CAS RN 993-07-7) | UK duty & VAT → |
| 2931 90 00 55 | 3-(Hydroxymethyl)phenylboronic acid (CAS RN 87199-15-3) with a purity by weight of 95 % or more | UK duty & VAT → |
| 2931 90 00 58 | Trimethylgallium (CAS RN 1445-79-0) with a purity by weight of 99 % or more | UK duty & VAT → |
| 2931 90 00 68 | Hydrogen tetrakis(pentafluorophenyl)borate(1-)-N,N-dimethylaniline (1:1) (CAS RN 118612-00-3) with a purity by weight of 99 % or more | UK duty & VAT → |
| 2931 90 00 75 | Hexadecyltrimethoxysilane (CAS RN 16415-12-6) with a purity by weight of at least 95 %, for use in the manufacture of polyethylene | UK duty & VAT → |
| 2931 90 00 90 | Other | UK duty & VAT → |
Nearby codes in heading 2931
The subheadings immediately before and after 2931.90 in chapter 29.
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 2931.90.
What is HS code 2931.90?
HS code 2931.90 covers: Other. It belongs to chapter 29 (Organic chemicals) of the Harmonized System.
What is the US import duty for HS code 2931.90?
The US general (normal trade relations) rates under this subheading range: Free - 6.5%. 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 2931.90?
The UK extends 2931.90 to 16 declarable 10-digit commodity codes, starting with 2931900000. The full code goes on the UK customs declaration.