Sourcing cyanuric chloride from China

Cyanuric chloride duty and tariff flags

Read from the UK Trade Tariff on 1 October 2026, heading 2933 covers heterocyclic compounds with nitrogen hetero-atoms only. The supplied residual line for other unfused triazine compounds, 2933 69 80 90, carries 6% duty for goods from China. Use this as the candidate code for cyanuric chloride, subject to confirmation. The supplied record shows no anti-dumping or countervailing duty on this line.

The line has a 0% autonomous suspension restricted to a different named substance, so it does not establish relief for cyanuric chloride. The UK Trade Tariff also attaches dangerous-chemical export and waste export controls. Ask your customs broker to confirm whether any requirement applies to the proposed import from China; do not treat these export flags as proof that an import licence is required.

Give the broker the exact substance identity, composition and intended presentation, then confirm the commodity code. The table repeats the candidate code for purchasing specifications, rather than separate tariff lines. For the wider heading, see the pyrimidine sourcing guide.

Specify cyanuric chloride for your process

Write cyanuric chloride explicitly on the enquiry, specification and purchase order. Agree assay, impurity profile, water content, appearance and particle-size requirements with the laboratory that will release the material. Ask the factory to identify its analytical methods and supply a batch certificate of analysis. Trial a representative sample in your process before approving bulk material.

Agree the drum, inner liner, closure and sampling arrangements with the receiving site. Settle the UK REACH position before ordering: ask HSE to confirm the applicable registration threshold and whether the Chinese manufacturer's UK only representative covers the import. Registration is per substance and legal entity. Hazardous chemicals supplied for use at work require a safety data sheet.

Worked duty example

Illustrative example, not a quote: Illustrative order: 500 kg of cyanuric chloride; illustrative FOB value and freight under 2933 69 80 90, invoiced at £2,500 free on board, with £2,500 of freight and insurance to the UK. The customs value is £5,000. Duty at 6% is £300. Import VAT at 20% is charged on the customs value plus duty, £5,300, so it is £1,060. Import taxes total £1,360; a VAT-registered importer can usually reclaim the VAT, so the lasting cost is the £300 of duty. The import duty and VAT guide explains each step.

Inspection checklist

Identity: match the purchase order, drum label and batch certificate, then have your laboratory confirm cyanuric chloride against the agreed reference material.

Analysis: check assay, impurities and water content against the purchase specification using the agreed methods; retain a traceable sample from each batch.

Physical condition: check appearance, particle size, unexpected clumping, liner damage, broken seals and evidence of moisture before releasing the drums.

Supply documents: reconcile batch labels with the safety data sheet and delivery records. Supply-chain businesses must ensure correct labelling and packaging before material is placed on the market.

What goes wrong

A headline assay can hide an unsuitable impurity profile or particle size. A sample approved for your reaction may not represent the delivered batch, while a copied certificate can conceal that difference. Treat clumping, damaged liners and inconsistent batch labels as reasons to hold the material for investigation.

Another error is claiming the residual line's suspension without checking its named substance. Keep tariff confirmation separate from laboratory release, and resolve both before using or supplying the batch. Use testing and certification support to arrange the agreed analytical checks.

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.