Sourcing manganese sesquioxide from China

Duty on manganese sesquioxide

Heading 2820 covers manganese oxides. For manganese sesquioxide, the relevant line is 2820 90 90 00, other manganese oxides. Only this line is shown because the other supplied lines describe different oxides. Confirm the composition and commodity code before declaring the shipment. See the wider manganese oxides guide for the rest of the heading.

Read from the UK Trade Tariff on 29 September 2026, the supplied record lists 0% duty for goods from China, no anti-dumping or countervailing measure and no suspension.

The tariff attaches import and export waste controls. For waste from China subject to notification controls, the exporter must apply to the competent authority in the dispatch country for consent. Confirm the applicable import requirements with your customs broker before shipment. Ask the broker to check the export control before returning material that is waste.

Specify oxide identity and powder behaviour

Name manganese sesquioxide explicitly in the purchase specification. Agree the assay basis, acceptable other manganese oxides, iron and other impurities, moisture, particle size distribution and test methods. A total manganese result alone does not establish which oxide the factory has supplied. Ask for batch analysis and an agreed method of confirming oxide identity.

Describe how the powder will be used and agree a sample trial in that process. Record acceptable agglomeration, dispersion and packing conditions. Request the safety data sheet and the factory's classification basis. Confirm with HSE whether your imports require UK REACH registration; registration is per substance and legal entity. Classification and labelling must be carried out by someone with scientific competence.

Worked duty example

Illustrative example, not a quote: Illustrative order: 25 kg of manganese sesquioxide powder under 2820 90 90 00, invoiced at £2,000 free on board, with £980 of freight and insurance to the UK. The customs value is £2,980. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £2,980, so it is £596. With no duty, the only import tax is the VAT, which a VAT-registered importer can usually reclaim. The import duty and VAT guide explains each step.

Inspection checklist

Identity: compare the batch certificate and independent identity test with the contracted manganese sesquioxide specification.

Composition: check assay, moisture and agreed impurities using samples drawn across the batch; retain sealed samples.

Powder: check particle size distribution, hard agglomerates and behaviour in the agreed process trial.

Packing and documents: check seals, liners, net weight and batch references; compare the hazard label with the safety data sheet. Safety data sheets fall under UK REACH.

What goes wrong

A generic manganese oxide description can hide a different oxide or a mixed material. A certificate showing only total manganese may leave that unresolved. Particle size drift, hard agglomerates or moisture can also make an otherwise acceptable assay unsuitable for the buyer's process.

Agree the identity test and sampling plan before production. Check batch references on arrival and hold material that fails the agreed specification while it is investigated. Use quality inspection to check packing and sampling, with laboratory analysis for composition and oxide identity.

Cambridge China Bridge sources these products for UK businesses, checking the factory and the documents before shipment. See factory verification. For repeat volumes, see container programmes.