Chapter 29 · Organic chemicals · Section 6
HS Code 2931.49
Other
Heading 2931: Other organo-inorganic compounds
US duty (general)
3.7%
US HTS lines
1
EU CN codes
8
UK commodity codes
19
Unit
kg
US HTS + UK Tariff v4.0.1596 · updated 2026-09-10 · sources
United States - HTS lines under 2931.49
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 |
|---|---|---|---|---|---|
| 2931.49.00 |
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 |
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 2931.49
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 49 20 | Bis[(5-ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphinan-5-yl)methyl] methylphosphonate | EU duty (TARIC) → |
| 2931 49 40 | (Nitrilotrimethanediyl)tris(phosphonic acid), {ethane-1,2-diylbis[nitrilobis(methylene)]}tetrakis(phosphonic acid), [(bis{2-[bis(phosphonomethyl)amino]ethyl}amino)methyl]phosphonic acid, {hexane-1,6-diylbis[nitrilobis(methylene)]}tetrakis(phosphonic acid), {[(2-hydroxyethyl)imino]bis(methylene)}bis(phosphonic acid), and [(bis{6-[bis(phosphonomethyl)amino]hexyl}amino)methyl]phosphonic acid; salts thereof | EU duty (TARIC) → |
| 2931 49 80 | Other | EU duty (TARIC) → |
| 2931 49 60 | Butyl methylphosphinate | EU duty (TARIC) → |
| 2931 49 30 | Etidronic acid (INN) (1-hydroxyethane-1,1-diphosphonic acid) and its salts | EU duty (TARIC) → |
| 2931 49 10 | Sodium 3-(trihydroxysilyl)propyl methylphosphonate | EU duty (TARIC) → |
| 2931 49 50 | Bis(1-methylpentyl) methylphosphonate | EU duty (TARIC) → |
| 2931 49 00 | Other | EU duty (TARIC) → |
United Kingdom - commodity codes under 2931.49
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 49 00 00 | Other | UK duty & VAT → |
| 2931 49 10 00 | Sodium 3-(trihydroxysilyl)propyl methylphosphonate | UK duty & VAT → |
| 2931 49 20 00 | Bis[(5-ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphinan-5-yl)methyl] methylphosphonate | UK duty & VAT → |
| 2931 49 30 00 | Etidronic acid (INN) (1-hydroxyethane-1,1-diphosphonic acid) and its salts | UK duty & VAT → |
| 2931 49 40 00 | (Nitrilotrimethanediyl)tris(phosphonic acid), {ethane-1,2-diylbis[nitrilobis(methylene)]}tetrakis(phosphonic acid), [(bis{2-[bis(phosphonomethyl)amino]ethyl}amino)methyl]phosphonic acid, {hexane-1,6-diylbis[nitrilobis(methylene)]}tetrakis(phosphonic acid), {[(2-hydroxyethyl)imino]bis(methylene)}bis(phosphonic acid), and [(bis{6-[bis(phosphonomethyl)amino]hexyl}amino)methyl]phosphonic acid; salts thereof | UK duty & VAT → |
| 2931 49 50 00 | Bis(1-methylpentyl) methylphosphonate | UK duty & VAT → |
| 2931 49 60 00 | Butyl methylphosphinate | UK duty & VAT → |
| 2931 49 80 00 | Other | UK duty & VAT → |
| 2931 49 80 08 | Sodium diisobutyldithiophosphinate (CAS RN 13360-78-6) in an aqueous solution | UK duty & VAT → |
| 2931 49 80 10 | Triethyl phosphonoacetate (CAS RN 867-13-0) with a purity by weight of 98 % or more | UK duty & VAT → |
| 2931 49 80 13 | Trioctylphosphine oxide (CAS RN 78-50-2) | UK duty & VAT → |
| 2931 49 80 20 | Tetrabutylphosphonium acetate (CAS RN 30345-49-4) in the form of an aqueous solution, containing by weight 40 % or more but not more than 50 % of tetrabutylphosphonium acetate | UK duty & VAT → |
| 2931 49 80 25 | (Z)-Prop-1-en-1-ylphosphonic acid (CAS RN 25383-06-6) | UK duty & VAT → |
| 2931 49 80 35 | Ethyl phenyl(2,4,6-trimethylbenzoyl)phosphinate (CAS RN 84434-11-7) | UK duty & VAT → |
| 2931 49 80 38 | N-(Phosphonomethyl)iminodiacetic acid (CAS RN 5994-61-6) containing by weight not more than 15 % of water, and with a dry weight purity of 97 % or more | UK duty & VAT → |
| 2931 49 80 40 | Tetrakis(hydroxymethyl)phosphonium chloride (CAS RN 124-64-1) | UK duty & VAT → |
| 2931 49 80 55 | 3-(Hydroxyphenylphosphinoyl)propionic acid (CAS RN 14657-64-8) | UK duty & VAT → |
| 2931 49 80 60 | alkyl phosphonic acids and their sodium salts | UK duty & VAT → |
| 2931 49 80 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 2931
2931.00 2931 Other organo-inorganic compounds
2931.10 Tetramethyl lead and tetraethyl lead
2931.20 Tributyltin compounds
2931.41 Dimethyl methylphosphonate
2931.42 Dimethyl propylphosphonate
2931.43 Diethyl ethylphosphonate
2931.44 Methylphosphonic acid
2931.45 Salt of methylphosphonic acid and (aminoiminomethyl)urea (1:1)
2931.46 2,4,6-Tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide
2931.47 (5-Ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphinan-5-yl) methyl methyl methylphosphonate
2931.48 3,9-Dimethyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro [5.5] undecane 3,9-dioxide
2931.49 Other
2931.51 Methylphosphonic dichloride
2931.52 Propylphosphonic dichloride
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.