Sourcing Trioxane from China

Trioxane duty and classification

Read from the UK Trade Tariff on 1 October 2026, heading 2912 covers aldehydes, cyclic polymers of aldehydes and paraformaldehyde. The supplied trioxane-relevant line is 2912 50 00 00, cyclic polymers of aldehydes. It carries 4% duty on goods from China, with no listed anti-dumping or countervailing duty and no suspension. Only this line is shown because the supplied facts contain no separate trioxane grades.

The tariff attaches an export control for waste. Waste shipment controls apply only where the material is waste; this attachment should not be presented as an import ban on fresh trioxane. If buying recovered material or returning rejected stock, ask your customs broker to confirm the applicable waste requirements before arranging transport.

Confirm the commodity code using the substance identity, composition and intended supply form. Do not assume a formulated product uses the same code as the substance. See the paraformaldehyde guide for related heading coverage.

Specify trioxane identity and batch quality

Write trioxane explicitly into the purchase specification rather than accepting a generic formaldehyde product description. Agree assay, moisture, acidity, residual formaldehyde, appearance and the analytical methods used. Request a batch certificate of analysis and retain an approved sample. State whether the material is for laboratory work or a production process, and trial it in that use before accepting bulk supply.

Agree sealed packaging, closure checks and storage instructions with the supplier. Chemicals must be correctly labelled and packaged before being placed on the GB market. A hazardous chemical supplied for workplace use needs a safety data sheet. Confirm with HSE whether UK REACH registration is required for your import and who is responsible before ordering.

Worked duty example

Illustrative example, not a quote: 2 tonnes of trioxane, illustrative order only under 2912 50 00 00, invoiced at £24,000 free on board, with £1,200 of freight and insurance to the UK. The customs value is £25,200. Duty at 4% is £1,008. Import VAT at 20% is charged on the customs value plus duty, £26,208, so it is £5,241.60. Import taxes total £6,249.60; a VAT-registered importer can usually reclaim the VAT, so the lasting cost is the £1,008 of duty. The import duty and VAT guide explains each step.

Inspection checklist

Identity: match the purchase specification, container labels and batch certificate to trioxane.

Analysis: check assay, moisture, acidity and residual formaldehyde against the agreed limits and methods.

Packaging: inspect seals, closures, liners and containers for damage, leakage or contamination on arrival.

Traceability: match batch references across the shipment documents and containers; retain samples for disputed results.

What goes wrong

A generic formaldehyde description can conceal a substance mismatch. Other rejection points include moisture outside the agreed limit, discoloured or contaminated material, damaged closures and a certificate that describes a different batch. Appearance alone cannot establish chemical identity or suitability for your process.

Specify what happens when test results disagree, including sampling, retesting and batch segregation. Keep suspect material separate pending a decision. A supplier's certificate should be checked against the delivered batch rather than treated as proof that every container meets your specification.

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.