Sourcing pyrazole from China
The supplied pyrazole-family lines carry base UK duties of 0% to 6%, with qualifying named derivatives suspended to 0%. Confirm the exact substance and settle UK REACH and chemical classification before importing into Great Britain. The supplied record does not identify unsubstituted pyrazole's code. Cambridge China Bridge sources pyrazole.
Pyrazole identity determines the tariff line
Read from the UK Trade Tariff on 1 October 2026, heading 2933 covers heterocyclic compounds with nitrogen hetero-atoms only. The supplied pyrazole-family records name propyphenazone at 0%, and edaravone and the listed pyrazole carboxylic acid at 6%. Both latter lines have autonomous suspensions to 0%, excluding mixtures, preparations and multi-component products containing them. The acid line specifies purity by weight of at least 97%. These named derivatives are not interchangeable with unsubstituted pyrazole.
No anti-dumping or countervailing duty is recorded for these lines. All carry a waste export-control flag; the edaravone and carboxylic acid lines also carry a dangerous-chemical export-control flag. Ask your customs broker to confirm their relevance to imports from China. Waste shipment controls apply only if the material is waste. For recovered or rejected material, confirm the applicable requirements before shipment rather than treating it as ordinary chemical stock.
The table repeats propyphenazone for laboratory and bulk purchasing; these are the same tariff line. The supplied record contains no line identifying unsubstituted pyrazole. Give your broker its exact substance identity, composition and intended use, and use finding your commodity code. For wider heading coverage, see the imidazole guide.
| Goods | Commodity code | Duty | Anti-dumping or countervailing duty on China |
|---|---|---|---|
| Propyphenazone for laboratory supply | 2933 11 10 00 | 0% | None |
| Edaravone | 2933 19 90 40 | 6% | None |
| 3-Difluoromethyl-1-methyl-1H-pyrazole-4-carboxylic acid, purity at least 97% | 2933 19 90 63 | 6% | None |
Specify the pyrazole compound and impurity profile
State whether you want unsubstituted pyrazole or a named derivative. Specify the substance name, chemical identity number, physical form, assay method, water content, residual solvents and individual impurities. For substituted pyrazoles, ask the laboratory to distinguish the intended compound from positional isomers. Agree a batch certificate of analysis, traceable samples and acceptance criteria before approving production.
For Great Britain, confirm whether UK REACH registration is required and whether the manufacturer's GB-based only representative covers your imports. Confirm with HSE the classification, labelling and packaging responsibilities applicable to your imports before placing the chemicals on the GB market. Obtain the safety data sheet and agree packing against the chemical's classification. A certificate of analysis supports quality checks; it does not settle these importer responsibilities.
HSE states that there are no prior informed consent notification obligations for imports. If the exact substance is listed under that regime, check annual quantity reporting and any reporting exemption with HSE. The export-control flag alone does not establish that your particular pyrazole compound is listed.
Worked duty example
Illustrative example, not a quote: Illustrative order: 500 kg of propyphenazone; values illustrate the calculation only under 2933 11 10 00, invoiced at £40,000 free on board, with £2,500 of freight and insurance to the UK. The customs value is £42,500. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £42,500, so it is £8,500. 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 agreed pyrazole compound across container labels, the order, safety data sheet and batch certificate.
Analysis: check assay, water, residual solvents and specified impurities using the agreed methods; investigate unexpected analytical peaks.
Traceability: match delivered batch markings to original laboratory results and retain a sample of the delivered material.
Packing: inspect liners, closures and seals for damage, leakage or moisture entry; compare hazard labels with the safety data sheet.
Working out your own order? Send us the product on WhatsApp and we reply the same working day: WhatsApp us
What goes wrong
A quotation describing only a pyrazole derivative can conceal the wrong substitution pattern, a blend or a different chemical entirely. A high assay figure does not resolve identity, water content or an unsuitable impurity profile. A copied certificate may describe an earlier batch rather than the delivered stock.
Write the identity tests, analytical methods and acceptance criteria into the order. Investigate conflicting labels or unexpected results before releasing material into your process. Do not assume a named derivative's code or suspension applies to unsubstituted pyrazole. Use factory verification to check the manufacturing site behind the seller's documents.
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 pyrazole from China?
The supplied named pyrazole-family lines have base duties of 0% to 6%, with qualifying edaravone and the listed carboxylic acid suspended to 0%. They do not identify unsubstituted pyrazole's code or duty.
Can I use an edaravone code for ordinary pyrazole?
Do not assume so. Edaravone is a named derivative. Give your broker the actual substance identity and composition to confirm the code for unsubstituted pyrazole.
Do I need UK REACH registration for pyrazole?
For Great Britain, confirm with HSE whether registration is required and whether the manufacturer's GB-based only representative covers your imports. Settle coverage before ordering.
What should a pyrazole certificate of analysis show?
The delivered batch, exact compound identity, assay, water, residual solvents and agreed impurities, with analytical methods and results against your specification.