Sourcing dimethylformamide from China

Dimethylformamide duty and purity conditions

Read from the UK Trade Tariff on 5 November 2026, heading 2924 covers carboxyamide-function compounds and amide-function compounds of carbonic acid. Dimethylformamide falls within the residual acyclic-amide line 2924 19 00 90. The table repeats that single relevant commodity line for different purchasing situations; these are not separate tariff codes.

The China third-country duty is 6%. The supplied tariff record lists a 0% autonomous suspension for dimethylformamide with purity by weight of 99.9% or more, excluding mixtures, preparations and products made up of different components. No anti-dumping or countervailing measure is recorded. The line also carries an export control for waste. Ask your customs broker to confirm its relevance, particularly for recovered solvent or proposed returns.

Match the chemical identity, composition and purity evidence before claiming the suspension. Confirm the commodity code, and see the wider amide chemicals guide for other products in this heading.

Specify dimethylformamide purity and water content

Specify dimethylformamide by its chemical identity rather than a solvent trade name. Agree assay, water content, acidity, colour and relevant impurities, together with test methods and acceptance criteria. State whether recovered material is acceptable. Request a certificate of analysis tied to the production batch and a retained sample for comparison.

For Great Britain, confirm with HSE the safety data sheet, chemical hazard labelling and UK REACH registration requirements applicable to your dimethylformamide imports. Check these arrangements before ordering. Agree drum material, closures and seals with the supplier, and review the safety data sheet when planning unloading, storage and sampling.

Worked duty example

Illustrative example, not a quote: Illustrative small-business consignment of sealed drums, without a suspension claim under 2924 19 00 90, invoiced at £2,500 free on board, with £980 of freight and insurance to the UK. The customs value is £3,480. Duty at 6% is £208.80. Import VAT at 20% is charged on the customs value plus duty, £3,688.80, so it is £737.76. Import taxes total £946.56; a VAT-registered importer can usually reclaim the VAT, so the lasting cost is the £208.80 of duty. The import duty and VAT guide explains each step.

Inspection checklist

Identity: match the purchase order, drum labels, safety data sheet and batch certificate to dimethylformamide.

Analysis: compare assay, water, acidity, colour and impurity results with the agreed specification; retain evidence supporting any purity-based suspension claim.

Packaging: check closures, seals, leaks, corrosion and staining before accepting the drums.

Traceability: reconcile drum batch marks with the certificate and sampling record; investigate mixed or missing batch identities.

What goes wrong

A supplier's headline purity can hide an unsuitable water or impurity profile. A certificate from a different batch gives no assurance about the delivered solvent. Treat an unexplained change in colour, acidity or analytical results as a reason to hold the batch for investigation.

The suspension claim can fail when the evidence does not establish the specified purity or the shipment is a preparation. Do not assume recovered solvent has the same regulatory position as fresh product. Waste shipment controls apply only where the material is waste; confirm its status and the applicable requirements before shipment or return.

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.