Sourcing boron trifluoride etherate from China

Duty and the proposed etherate classification

Read from the UK Trade Tariff on 16 November 2026, heading 2942 covers other organic compounds. The supplied lines all carry 0% duty for goods from China, with no anti-dumping or countervailing measures or suspensions recorded. The residual line, 2942 00 00 90, is the proposed classification for this etherate, subject to confirmation against the exact composition.

The UK Trade Tariff attaches Veterinary control and Export control - Waste to this line. Their application to a Chinese shipment of this etherate has not been established here. Ask your customs broker to confirm the veterinary requirement and whether any waste-related requirement affects the proposed movement before dispatch.

Confirm the commodity code using the substance identity, composition and any added solvent. Only the residual line in the supplied file is relevant to this guide. For the wider heading, see borane reducing agents.

Specify the etherate composition and assay

Specify boron trifluoride diethyl etherate by its full chemical identity. State whether you want the etherate itself or a solution with added solvent. Agree the boron trifluoride assay, its reporting basis and test method, water specification, impurity limits, acceptable appearance, bottle material, closure and storage instructions. Require a batch certificate of analysis that reports the agreed tests.

For Great Britain, establish the UK REACH route before shipment. Ask HSE to confirm whether registration or only-representative coverage is needed for your planned annual imports. Match any coverage to the actual substance and supplier rather than accepting a general statement that the factory complies.

Worked duty example

Illustrative example, not a quote: Illustrative small-business order of boron trifluoride diethyl etherate in sealed laboratory bottles under 2942 00 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 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £3,480, so it is £696. 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: check the purchase order, bottle label and batch certificate describe the same etherate composition and any added solvent.

Assay: ask a suitably equipped laboratory to verify the agreed boron trifluoride assay and water specification using the agreed methods.

Containers: inspect seals, closures, leakage, bottle damage and batch traceability before accepting the delivery. Agree sampling arrangements with the laboratory.

Safety documents: check the English safety data sheet and Great Britain classification, labelling and packaging arrangements. The sender is responsible for classifying, packaging and marking dangerous goods for transport.

What goes wrong

An assay can appear to meet the order while being reported on a different basis. An etherate solution can also be quoted against a request for the etherate itself. Put the composition, assay basis and acceptance method in the purchase specification, then compare the batch results with that specification.

Damaged closures, missing batch identification and mismatched safety documents should trigger a hold for investigation. Use the inspection guide to agree checks before dispatch. A safety data sheet is not a risk assessment; use its information to make your own assessment.

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.