Chapter 38 · Miscellaneous chemical products · Section 6
HS Code 3815.90
Other
Heading 3815: Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included
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 3815.90
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 |
|---|---|---|---|---|---|
| 3815.90.10 |
Consisting wholly of inorganic substances > Of bismuth, of tungsten or of vanadium |
6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 40% | kg |
| 3815.90.20 |
Consisting wholly of inorganic substances > Of mercury or of molybdenum |
2.8% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 18% | kg |
| 3815.90.30 |
Consisting wholly of inorganic substances > Other |
Free | - | 25% | kg |
| 3815.90.50 |
Consisting wholly of inorganic substances > Other |
5% | 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 3815.90
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 | |
|---|---|---|
| 3815 90 10 | Catalyst consisting of ethyltriphenylphosphonium acetate in the form of a solution in methanol | EU duty (TARIC) → |
| 3815 90 90 | Other | EU duty (TARIC) → |
| 3815 90 00 | Other | EU duty (TARIC) → |
United Kingdom - commodity codes under 3815.90
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 | |
|---|---|---|
| 3815 90 00 00 | Other | UK duty & VAT → |
| 3815 90 10 00 | Catalyst consisting of ethyltriphenylphosphonium acetate in the form of a solution in methanol | UK duty & VAT → |
| 3815 90 90 00 | Other | UK duty & VAT → |
| 3815 90 90 16 | Initiator based on dimethylaminopropyl urea | UK duty & VAT → |
| 3815 90 90 30 | Catalyst, consisting of a suspension in mineral oil of: <br><br><br>- tetrahydrofuran complexes of magnesium chloride and titanium(III) chloride; and <br> <br><br><br>- silicon dioxide <br> <br><br><br>- containing 6,6 % (± 0,6 %) by weight of magnesium, and <br> <br><br><br>- containing 2,3 % (± 0,2 %) by weight of titanium | UK duty & VAT → |
| 3815 90 90 38 | Photoinitiator, containing by weight: -80 % or more of polyethylene glycol di[β-4-[4-(2-dimethylamino-2-benzyl)butanoylphenyl]piperazine]propionate (CAS RN 886463-10-1), -not more than 17 % of polyethylene glycol [β-4-[4-(2-dimethylamino-2-benzyl)butanoylphenyl]piperazine]propionate | UK duty & VAT → |
| 3815 90 90 43 | Catalyst in powder form consisting by weight of<br><br>-92,50 % (± 2) % titanium dioxide (CAS RN 13463-67-7)<br><br>-5 % (± 1) % silicon dioxide (CAS RN 112926-00-8) and<br><br>-2,5 % (± 1,5) % sulphur trioxide (CAS RN 7446-11-9)<br> | UK duty & VAT → |
| 3815 90 90 48 | Photoinitiator containing by weight: -88 % or more of α-(2-benzoylbenzoyl)-ω-[(2-benzoylbenzoyl)oxy]-poly(oxy-1,2-ethanediyl) (CAS RN 1246194-73-9), -not more than 12 % of α-(2-benzoylbenzoyl)-ω-hydroxy-poly(oxy-1,2-ethanediyl) (CAS RN 1648797-60-7) | UK duty & VAT → |
| 3815 90 90 50 | Catalyst containing titanium trichloride, in the form of a suspension in hexane or heptane containing by weight, in the hexane- or heptane-free material, 9 % or more but not more than 30 % of titanium | UK duty & VAT → |
| 3815 90 90 55 | Catalytic Additives for fluid catalytic cracking (FCC), not containing Y type zeolite (CAS RN 308079-79-0), and not being a FCC (Fluid Catalytic Cracking) base catalyst, in the form of powder, consisting of a mixture of one or more of the following active substances: -calcium carbonate (CAS RN 471-34-1), -copper oxide (CAS RN 1217-38-0), -iron oxide (CAS RN 1309-37-1), -aluminium magnesium vanadium oxide (CAS RN 70621-8-0), -vanadium pentoxide (CAS RN 1314-62-1), -aluminium phosphate (CAS RN 7784-30-7), -cerium oxide (CAS RN 1306-38-3), -ZSM-5 type zeolite (CAS RN 308081-08-5), and one or more of the following inert substances: -magnesium oxide (CAS RN 1309-48-8), -aluminium oxide (CAS RN 1344-28-1), -kaolin (CAS RN 1332-58-7) | UK duty & VAT → |
| 3815 90 90 58 | 1,1′-Bis(4-triethylsilylphenyl)methylene(cyclopentadienyl)(2,7-di-tert-butyl-9-fluorenyl)dimethylhafnium (CAS RN 264926-41-2) in the form of a hexane (CAS RN 110-54-3) solution, containing by weight 2,0 % or more but not more than 2,5 % of 1,1′-bis(4-triethylsilylphenyl)methylene(cyclopentadienyl)(2,7-di-tert-butyl-9-fluorenyl)dimethylhafnium | UK duty & VAT → |
| 3815 90 90 60 | Dinonylnaphthalenedisulfonic acid (CAS RN 60223-95-2) with a content by weight of 50 % or more but not more than 65 %, in the form of a solution in isobutanol (CAS RN 78-83-1) | UK duty & VAT → |
| 3815 90 90 76 | Catalyst consisting of titanium dioxide and tungsten trioxide | UK duty & VAT → |
| 3815 90 90 81 | Catalyst, containing by weight 69 % or more but not more than 79 % of (2-hydroxy-1-methylethyl)trimethylammonium 2-ethylhexanoate | UK duty & VAT → |
| 3815 90 90 85 | Catalyst based on aluminosilicate (zeolite), for the alkylation of aromatic hydrocarbons, for the transalkylation of alkylaromatic hydrocarbons or for the oligomerization of olefins | UK duty & VAT → |
| 3815 90 90 88 | Catalyst, consisting of titanium tetrachloride and magnesium chloride, containing by weight on an oil- and hexane-free basis:<br> <br><br><br>- 4 % or more but not more than 10 % of titanium and<br> <br><br><br>- 10 % or more but not more than 20 % magnesium<br> | UK duty & VAT → |
| 3815 90 90 89 | Rhodococcus rhodocrous J1 bacteria, containing enzymes, suspended in a polyacrylamide gel or in water, for use as a catalyst in the production of acrylamide by the hydration of acrylonitrile | UK duty & VAT → |
| 3815 90 90 90 | Other | UK duty & VAT → |
Nearby codes in heading 3815
The subheadings immediately before and after 3815.90 in chapter 38.
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 3815.90.
What is HS code 3815.90?
HS code 3815.90 covers: Other. It belongs to chapter 38 (Miscellaneous chemical products) of the Harmonized System.
What is the US import duty for HS code 3815.90?
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 3815.90?
The UK extends 3815.90 to 18 declarable 10-digit commodity codes, starting with 3815900000. The full code goes on the UK customs declaration.