Sourcing benzenesulphonamide from China
The supplied benzenesulphonamide derivative lines range from 0% under suspension to 6% duty. They do not establish the rate for unsubstituted benzenesulphonamide. Confirm applicable UK REACH registration requirements and exemptions with HSE before shipment. Cambridge China Bridge sources benzenesulphonamide.
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Benzenesulphonamide identity and tariff checks
Read from the UK Trade Tariff on 23 November 2026, heading 2935 covers sulphonamides. The table contains named benzenesulphonamide derivatives for comparison. These are different substances, rather than grades of ordinary benzenesulphonamide. The supplied tariff extract does not include the residual commodity line needed to establish the duty on the unsubstituted substance.
The named derivatives shown carry a 6% third-country duty for goods from China. Code 2935 90 90 57 also has a 0% autonomous suspension, whose footnote excludes mixtures, preparations and products containing different components. The selected lines show no anti-dumping or countervailing measures. They attach dangerous-chemical export and waste-export controls; ask your customs broker to confirm their relevance to the shipment.
Confirm the exact identity and commodity code before ordering. Do not transfer a derivative's suspension to ordinary benzenesulphonamide. If the substance is on the British prior informed consent list, annual quantity reporting applies, although imports have no notification obligation under that scheme. Waste shipment controls apply only when the material is waste; confirm the applicable route with your broker if that status is uncertain. See the related para-toluenesulphonamide guide for wider heading context.
| Goods | Commodity code | Duty | Anti-dumping or countervailing duty on China |
|---|---|---|---|
| Bromo-substituted benzenesulphonamide derivative, purity 97% or more | 2935 90 90 16 | 6% | None |
| Amino-dimethoxy methylbenzenesulphonamide derivative, purity 98% or more | 2935 90 90 18 | 6% | None |
| Amino-dimethoxy phenylbenzenesulphonamide derivative, purity 98% or more | 2935 90 90 19 | 6% | None |
| Phenylcarbamoylaminophenyl benzenesulphonamide derivative | 2935 90 90 57 | 6% | None |
Specify benzenesulphonamide by identity and assay
Write the full chemical name and chemical identity reference into the purchase specification. Make clear whether you want unsubstituted benzenesulphonamide or a named derivative. Agree the assay method, impurity profile, water content, residual solvents, particle size and acceptable appearance. Ask for a batch certificate of analysis and a sample for a trial in your process.
For ordinary chemical uses, confirm applicable UK REACH registration requirements and exemptions with HSE. Check your route before shipment. Everyone supplying chemicals must ensure correct labelling and packaging before placing them on the Great Britain market. A safety data sheet is required when a hazardous chemical is supplied for workplace use.
Agree sealed moisture-resistant packing, batch identification and storage instructions with the supplier. Put the sampling method and acceptance criteria in writing so that the arrival sample can be compared with the approved sample.
Worked duty example
Illustrative example, not a quote: Illustrative trial order: one tonne of the named derivative, purity 98% or more under 2935 90 90 18, invoiced at £21,000 free on board, with £2,500 of freight and insurance to the UK. The customs value is £23,500. Duty at 6% is £1,410. Import VAT at 20% is charged on the customs value plus duty, £24,910, so it is £4,982. Import taxes total £6,392; a VAT-registered importer can usually reclaim the VAT, so the lasting cost is the £1,410 of duty. The import duty and VAT guide explains each step.
Inspection checklist
Identity: match the order, container labels, certificate of analysis and safety data sheet to the same substance and batch.
Assay: independently check purity, related substances, water and residual solvents against the agreed methods.
Condition: inspect for dampness, caking, discolouration or foreign particles before releasing the batch.
Packing: check seals, liners, container damage and readable labels. Record arrival findings using the quality inspection guide.
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What goes wrong
A quotation can describe a derivative as benzenesulphonamide without making the substitution clear. That changes the product you receive and can invalidate the tariff comparison. Another failure is accepting an assay result without checking its method or the impurity profile needed by your process.
Treat caking, colour changes, broken seals and conflicting batch documents as reasons to hold the material for investigation. Compare an independently tested arrival sample with the approved sample before using the stock. A supplier's claim of duty-free treatment needs an exact substance and tariff basis.
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 benzenesulphonamide from China?
The supplied facts show 6% on the selected named derivatives, with a 0% suspension on 2935 90 90 57. They omit the residual line, so do not establish the duty on unsubstituted benzenesulphonamide.
Do I need UK REACH registration for benzenesulphonamide?
Confirm your import route before shipment.
What should a benzenesulphonamide specification include?
Include exact identity, grade, assay method, impurities, water, residual solvents, particle size, packing and batch documentation. Agree acceptance criteria before approving the sample.
Can I use a derivative's duty suspension for benzenesulphonamide?
Do not assume so. The suspension shown belongs to the named substance in 2935 90 90 57 and excludes mixtures and preparations. Ordinary benzenesulphonamide needs its own classification check.