Sourcing Hexafluorobutadiene from China
Hexafluorobutadiene from China carries 4% UK duty under the relevant residual line. Its named suspension covers other substances. Before GB supply, ensure correct labelling and packaging, and establish the UK REACH registration position. Cambridge China Bridge sources hexafluorobutadiene.
Hexafluorobutadiene duty and tariff scope
Read from the UK Trade Tariff on 1 October 2026, heading 2903 covers halogenated derivatives of hydrocarbons. The relevant residual line for hexafluorobutadiene is 2903 59 00 90, covering other unsaturated fluorinated derivatives of acyclic hydrocarbons. The table repeats this line for different purchasing specifications, rather than separate tariff classifications.
The supplied line carries 4% duty for goods from China, with no anti-dumping or countervailing measure recorded. Its 0.00 % suspension names other substances, not hexafluorobutadiene. The UK Trade Tariff also attaches an export control for waste; ask your customs broker to confirm its relevance to the shipment, including any proposed return of unwanted material.
Confirm the commodity code against the full chemical identity and composition before ordering. For wider heading context, see the hexafluoropropylene guide. Do not copy a related fluorochemical's suspension or import paperwork onto this product.
| Goods | Commodity code | Duty | Anti-dumping or countervailing duty on China |
|---|---|---|---|
| Hexafluorobutadiene for process trials | 2903 59 00 90 | 4% | None |
Specify hexafluorobutadiene by impurity profile
Write the chemical identity, intended process, assay method and acceptance limits into the purchase specification. Ask for separate results for moisture, oxygen, other fluorinated compounds and non-volatile residue where relevant to your process. Agree reporting limits so that an impurity reported as undetected has a defined meaning.
Specify cylinder material, valve connection, delivered quantity and the supplier's cylinder preparation procedure. Confirm compatibility with your receiving equipment before dispatch. Establish the UK REACH registration position for your importing business; registration is per substance and legal entity.
Everyone in the chemical supply chain is responsible for correct labelling and packaging before market supply. A safety data sheet is required where a hazardous chemical is supplied for workplace use. Obtain the product-specific sheet before approving the order.
Worked duty example
Illustrative example, not a quote: Illustrative small cylinder consignment for a process trial; values are illustrative under 2903 59 00 90, invoiced at £2,500 free on board, with £860 of freight and insurance to the UK. The customs value is £3,360. Duty at 4% is £134.40. Import VAT at 20% is charged on the customs value plus duty, £3,494.40, so it is £698.88. Import taxes total £833.28; a VAT-registered importer can usually reclaim the VAT, so the lasting cost is the £134.40 of duty. The import duty and VAT guide explains each step.
Inspection checklist
Identity: match the purchase specification, cylinder labels, invoice and batch certificate to hexafluorobutadiene.
Analysis: compare batch results and analytical reporting limits with the agreed impurity specification; arrange independent testing through a laboratory equipped to handle the material.
Cylinders: check cylinder identifiers, valve connections, protective fittings, seals and visible damage against the approved packing specification.
Arrival: reconcile delivered quantities and batch identifiers before connection; hold material with inconsistent documents or damaged packaging for supplier investigation.
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What goes wrong
A headline purity claim can hide an impurity profile that does not suit your process. Certificates without methods or reporting limits make batches difficult to compare. A valve connection that differs from the approved drawing can prevent use even when the chemical meets its specification.
Another avoidable mistake is claiming the suspension attached to the residual code without checking its named substances. For rejected or spent material, establish whether it is waste before arranging movement. Waste shipment controls apply when the material is waste; ask your broker to confirm the requirements for the proposed route.
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.
Frequently asked questions
What is the UK import duty on hexafluorobutadiene from China?
The supplied tariff line 2903 59 00 90 carries 4% duty. Its named suspension does not cover hexafluorobutadiene. No anti-dumping or countervailing measure is recorded.
Does the suspension on the commodity code cover hexafluorobutadiene?
No. The supplied suspension names other substances. Sharing their residual commodity code does not make hexafluorobutadiene eligible.
What should a hexafluorobutadiene certificate of analysis show?
Ask for batch identity, assay, agreed impurity results, analytical methods and reporting limits. Match the certificate to the cylinders delivered.
What should I check before connecting the cylinders?
Check chemical identity, cylinder identifiers, valve compatibility, seals, visible condition and the product-specific safety information against your approved specification.