Norway
Duty free*
- Their lines1 Norwegian line
28.42.9000 Other
Norwegian tariff data checked Sept. 13, 2026.
Customs code · HS subheading 2842 90
Salts of inorganic acids or peroxyacids
Excluding specified metal salts, silicates, selenium and tellurium salts, azides and mercury compounds
This category covers salts of inorganic acids or peroxyacids. It does not cover salts of oxometal or peroxometal acids, double or complex silicates including aluminosilicates, salts of selenium or tellurium acids, azides, or inorganic or organic mercury components.
For example
- A salt of an inorganic acid, other than an oxometal or peroxometal salt, silicate, selenium or tellurium acid salt, azide, or mercury component
- A salt of a peroxyacid, other than an oxometal or peroxometal salt, silicate, selenium or tellurium acid salt, azide, or mercury component
See the official tariff text
Official Danish tariff text
Salte af uorganiske syrer eller peroxosyrer (undtagen salte af oxometalsyrer eller peroxometalsyrer, dobbelte eller komplekse silicater, herunder aluminosilicater, også når de ikke er kemisk definerede, enkelte, dobbelte eller komplekse salte af selens syrer og tellurs syrer samt azider og uorganiske eller organiske komponenter af merkur)
until Aug. 3, 2026
This code is no longer in use. See the current codes under 2842 90:
Selling to Norway, Great Britain and the United States
What they charge on arrival.
Norway, Great Britain and the United States use their own tariff lines under the 6-digit HS code. The rates below are what their customs charge on goods arriving from the EU. Match the goods against each country's own wording before you rely on a rate.
Great Britain
Duty free*
- Their lines8 British lines
2842 90 10 10 Sodium selenate (CAS RN 13410-01-0)
Northern Ireland follows other rules.
UK tariff data checked Sept. 13, 2026.
United States
10.0%†
Estimated from published US measures
- Their lines3 US lines
- Entry dateSept. 17, 2026
2842.90.10.00 Other salts of inorganic acids or peroxoacids
The US importer of record files the entry.
US tariff data checked Sept. 16, 2026.
See the 1 Norwegian line
Selling to Norway
Norway splits the 6-digit category its own way, so these are Norway's own lines under it, not this EU code. Check your product against their wording; what Norwegian customs charges is shown per line.
-
28.42.9000
Other
- Ordinary duty
- Duty free*
Contains data from Norwegian Customs (data.toll.no), licensed under CC BY 4.0, adapted for display.
See the 8 British lines
Selling to Great Britain
What UK customs charges when goods like these arrive in Great Britain.
-
All 8 UK lines under this code
They all have the same duty rates shown here.
- Ordinary duty
- Duty free*
These rates apply in Great Britain. Different rules may apply for goods entering Northern Ireland.
Contains public sector information licensed under the Open Government Licence v3.0.
Source: UK Department for Business and Trade (data.api.trade.gov.uk).
See the 3 US lines
Selling to the United States
What US customs charges when goods like these arrive from the EU. The US importer of record files the entry and pays the duty.
-
2842.90.10.00
Other salts of inorganic acids or peroxoacids (including aluminosilicates whether or not chemically defined), other than azides, Other, Fulminates, cyanates and thiocyanates
- General rate
- 3.1%
- From the EU
- 10.0%† Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99
-
2842.90.90.10
Other salts of inorganic acids or peroxoacids (including aluminosilicates whether or not chemically defined), other than azides, Other, Selenides and tellurides
- General rate
- 3.3%
- From the EU
- 10.0%† Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99
-
2842.90.90.50
Other salts of inorganic acids or peroxoacids (including aluminosilicates whether or not chemically defined), other than azides, Other
- General rate
- 3.3%
- From the EU
- 10.0%† Estimated from published US measures US headings applied: 9903.05.39 Section 301 forced-labour action, 91 FR 47318 (memorandum 91 FR 47717), U.S. note 52 to subchapter III of chapter 99
Anti-dumping and countervailing duties, US import taxes and customs fees are not included.
The descriptions above are the US tariff texts, which the United States publishes in English only.
Source: the US International Trade Commission's Harmonized Tariff Schedule (hts.usitc.gov), public domain, and the measures published in the Federal Register.
This is a planning estimate from the US Harmonized Tariff Schedule (revision shown) and the published Federal Register measures as of the date shown, for a shipment of EU origin. It is not a customs entry, legal advice or a broker's opinion, and tariffs.help is not a US-licensed customs broker. The US importer of record or their broker confirms the classification, origin, value and the duty due before filing.
Before you use the code
Check the facts that sit outside the code
The code can be right while what you pay still changes, because of where the goods come from, when they arrive, or extra EU measures.
- The product and its form Check that your product really matches this description, including what it is made of and the form it arrives in.
- Country of origin Trade agreements, sanctions and extra measures can change the treatment of the very same code.
- Current tariff measures Check today's rate, any restrictions or licences, and the quantity customs asks for, with Toldstyrelsen or TARIC.
Rates, origin and documents
Read the signals first. Open only the ones you want to check.
Besides the ordinary duty, the EU records these kinds of measure against this code. They are listed as signals only: whether one applies to your goods can depend on where they come from, who produced them, the exact product and the documents you present. No amounts are worked out here.
Data of Sept. 1, 2026
Extra duty on goods from some countries
First
Trade-defence measures, such as anti-dumping duty, may apply to goods originating in:
- China
- any country except China
The duty depends on the producer or exporter, so two shipments of the same goods can be charged differently.
This is recorded on a more detailed code below this one, so it may not cover your goods.
Check this code in the official EU TARIC database
Lower duty for goods from some countries
Possible
Preferential rates exist for goods originating in:
- Andorra
- San Marino
- Türkiye
- European Union
- Comoros (excluding Mayotte), Madagascar, Mauritius, Seychelles and dependencies and Zimbabwe
- Botswana, Eswatini, Lesotho, Mozambique and Namibia
- Western Sahara
- European Union, Iceland, Liechtenstein and Norway
- +45 origins
These rates apply to Economic Partnership Agreements; CARIFORUM except Haiti; GSP-EBA (Special arrangement for the least-developed countries - Everything But Arms); OCTs (Overseas Countries and Territories); GSP - General arrangements except India; GSP+ (incentive arrangement for sustainable development and good governance).
Whether you can use one depends on the origin rules for the goods and on the documentation you can show.
Check this code in the official EU TARIC database
Restrictions and paperwork
Important
Import restrictions are recorded for goods originating in:
- any country
- Ukraine
The EU records document conditions on this code. What customs may ask for depends on where the goods come from, exactly what the product is and the customs procedure.
Proof of origin 2 conditions
If you claim a lower rate for goods from a country the EU has a trade agreement with, customs asks for proof of origin, for example a EUR.1 certificate or an origin declaration.
Show the EU's own wording for these conditions
- Invoice declaration or origin declaration made out by any exporter on invoice or any other commercial document
- Movement certificate EUR.1
Sanctions and restricted regions 2 conditions
Some conditions come from EU sanctions rules. They matter when the goods are linked to a country or region the EU restricts trade with.
Show the EU's own wording for these conditions
- Goods not originating from or destined to Crimea or Sevastopol (Articles 2 and 2b.1 of Council Regulation (EU) No 692/2014)
- Goods not originating from or not destined for the non-government controlled areas of Ukraine in the oblasts of Donetsk, Kherson, Luhansk and Zaporizhzhia
Product controls and permits 1 condition
Depending on the exact product, customs may ask for a licence, a permit or a control certificate before the goods are released.
Show the EU's own wording for this condition
- Notification document as mentioned in Regulation (EU) 2024/1157 - Article 5 and Annex IA
Other conditions 3 conditions
These conditions match none of the groups above. Whether customs asks for one depends on the goods, where they come from and the customs procedure.
Show the EU's own wording for these conditions
- Information document accompanying shipments of waste as mentioned in Regulation (EU) 2024/1157 – Article 18 and Annex VII
- Product not subjected to the provisions of Regulation (EU) 2024/1157
- Movement document as mentioned in Regulation (EU) 2024/1157 – Article 5 and Annex IB
One last classification check
Check the path and the nearest alternatives.
Use this view if you are still unsure the code describes the product precisely.
Show the steps
Compare with the codes next to it.
Compare the sibling codes at this level before you settle on this one.
- another option 2842 90 10 Salts, double salts or complex salts of selenium or tellurium acids 5.3%*
- another option 2842 90 20 Lithium iron phosphate 5.5%*
- another option 2842 90 70 Salts of inorganic acids or peroxoacids, n.e.s. No rate on file
-
you are here 2842 90 80 Salte af uorganiske syrer eller peroxosyrer (undtagen salte af oxometalsyrer eller peroxometalsyrer, dobbelte eller komplekse silicater, herunder aluminosilicater, også når de ikke er kemisk definerede, enkelte, dobbelte eller komplekse salte af selens syrer og tellurs syrer samt azider og uorganiske eller organiske komponenter af merkur) No rate on file
Worth comparing
Codes that sit close to this one, for when the material itself could be different.
Similar products elsewhere in the tariff
- 2811 29 90 Inorganic oxygen compounds of non-metals (excl. diphosphorus pentaoxide, oxides of boron, carbon dioxide, silicon dioxide, sulphur dioxide, sulphur trioxide "sulphuric anhydride", diarsenic trioxide and nitrogen oxides) 5.3%*
- 2811 19 80 Inorganic acids (excl. hydrogen chloride "hydrochloric acid", chlorosulphuric acid, sulphuric acid, oleum, nitric acid, sulphonitric acids, phosphoric acid, polyphosphoric acids, boric acids, hydrogen fluoride "hydrofluoric acid", hydrogen bromide "hydrobromic acid" and hydrogen cyanide "hydrocyanic acid") 5.3%*
- 2811 29 10 Sulphur trioxide "sulphuric anhydride"; diarsenic trioxide 4.6%*
- 2811 29 30 Nitrogen oxides 5.0%*
- 2841 90 85 Salte af oxometalsyrer eller peroxometalsyrer (undtagen chromater, dichromater, peroxochromater, manganiter, manganater, permanganater, molybdater, wolframater, zinkater og vanadater) No rate on file
Often confused with
-
2811 19 80
Inorganic acids (excl. hydrogen chloride "hydrochloric acid", chlorosulphuric acid, sulphuric acid, oleum, nitric acid, sulphonitric acids, phosphoric acid, polyphosphoric acids, boric acids, hydrogen fluoride "hydrofluoric acid", hydrogen bromide "hydrobromic acid" and hydrogen cyanide "hydrocyanic acid")
5.3%*
That code covers specified inorganic acids, whereas this code covers salts of inorganic acids or peroxyacids.
-
2841 90 85
Salte af oxometalsyrer eller peroxometalsyrer (undtagen chromater, dichromater, peroxochromater, manganiter, manganater, permanganater, molybdater, wolframater, zinkater og vanadater)
No rate on file
That code covers salts of oxometal or peroxometal acids; this code excludes them.
-
2842 90 10
Salts, double salts or complex salts of selenium or tellurium acids
5.3%*
That code covers single, double or complex salts of selenium and tellurium acids; this code excludes them.
Duty rates shown here are estimates, read from official EU / Danish, Norwegian and UK tariff data for orientation only. Confirm the current rate with Toldstyrelsen, TARIC, Norwegian Customs or the UK Online Trade Tariff before you file. The rate you pay can also depend on the country of origin. These are base customs duties only: import VAT, excise duties, anti-dumping duties and safeguard or quota measures are not included.