Sourcing Dicyclohexylcarbodiimide from China

Zero duty on dicyclohexylcarbodiimide

Read from the UK Trade Tariff on 1 October 2026, dicyclohexylcarbodiimide, chemical identity 538-75-0, falls under 2925 29 00 10 within heading 2925 for carboxyimide-function and imine-function compounds. The supplied tariff record shows 0% duty for goods from China, no anti-dumping or countervailing measure and no suspension on this dedicated line.

The UK Trade Tariff attaches veterinary control to this line. Confirm its application to the actual chemical with your customs broker before shipping from China. For animal products subject to veterinary checks, official guidance requires entry through an approved Border Control Post. The record also attaches export controls for dangerous chemicals and waste; ask your broker to confirm their relevance to any proposed movement.

Match the chemical identity, composition and physical form to the declaration and confirm the commodity code. Only the dedicated dicyclohexylcarbodiimide line is shown here. For the wider heading, see the guanidine hydrochloride guide.

Specify assay, moisture and coupling performance

Specify dicyclohexylcarbodiimide by its full chemical name and identity 538-75-0. Agree an assay method, acceptance limits for moisture, dicyclohexylurea and residual solvents, and the supplied physical form. Request actual batch results rather than a certificate containing only specification limits. Use a sample in your intended coupling process before approving the production batch.

For a substance you have not previously manufactured or imported, consider whether UK REACH registration is required. Before placing chemicals on the Great Britain market, ensure correct labelling and packaging under the chemical classification, labelling and packaging rules. When supplying chemicals onward, pass safety data sheet information to your customers.

Agree sealed inner packaging, closure checks and storage instructions with the supplier. Arrange testing and certification support around the agreed analytical methods and your intended use.

Worked duty example

Illustrative example, not a quote: Illustrative order: 1 tonne of dicyclohexylcarbodiimide under 2925 29 00 10, invoiced at £9,000 free on board, with £800 of freight and insurance to the UK. The customs value is £9,800. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £9,800, so it is £1,960. 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: match the container name, chemical identity and batch number to the purchase order and analysis certificate.

Analysis: check reported assay, moisture, residual solvents and dicyclohexylurea against the agreed limits and methods.

Packaging: check seals, closures, leakage and contamination; photograph damaged containers before moving the contents.

Process sample: compare the received material with the approved sample in your intended reaction and retain a traceable batch sample.

What goes wrong

A headline assay can hide differences in moisture, residual solvents or impurity profile. A sample that performs acceptably in your reaction does not establish that a later batch will perform the same way. Check batch-specific analytical results and investigate changes in reaction performance or purification behaviour.

Paperwork can describe the right chemical but the wrong batch, or omit whether the shipment contains a solvent formulation. Resolve identity and composition discrepancies before clearance. If material is being shipped as waste, waste shipment controls apply; confirm its status before agreeing any return movement.

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.