Sourcing Succinimide from China

Succinimide duty and classification

Read from the UK Trade Tariff on 1 October 2026, heading 2925 covers carboxyimide-function and imine-function compounds. The supplied record has no named succinimide line. Its residual other-imides line, 2925 19 95 90, carries 0% duty for China, with no anti-dumping or countervailing measure and no suspension shown. Only this potentially relevant line is included in the table.

That line attaches export controls for dangerous chemicals and waste. These are export-labelled measures in the supplied record. For imports from China, ask your customs broker to confirm applicability. HSE says imports of listed chemicals must comply with the prior informed consent regime. Waste shipment controls apply only where the material is waste; confirm the status of any recovered or off-specification material.

Confirm the exact substance, composition and commodity code before shipment. The table is a classification starting point, not a ruling for derivatives or formulated products. See the wider heading guide for saccharin, creatine and other chemicals.

Specify succinimide identity and batch quality

Specify succinimide by its full chemical identity, intended process and agreed analytical methods. Agree assay, moisture, residual solvents, named process impurities, appearance and particle size where these affect your application. Ask for a batch-specific certificate of analysis and a representative sample. Do not accept a substituted derivative against a succinimide order.

For a new UK REACH registration, where downstream user import notification provisions do not apply, HSE requires complete registration before imports into Great Britain reach 1 tonne per year. Check your registration position before ordering. Chemical classification is the supplier’s responsibility, including importers, regardless of quantity. A safety data sheet is required for a hazardous chemical supplied for workplace use.

Worked duty example

Illustrative example, not a quote: Illustrative order: 1 tonne of succinimide under 2925 19 95 90, invoiced at £9,000 free on board, with £800 of freight and insurance to the UK. The customs value is £9,800. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £9,800, so it is £1,960. 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 order, container labels and certificate of analysis to the same substance and batch.

Analysis: compare assay, moisture and agreed impurities with the purchase specification; independently test a representative sample before releasing the batch.

Packaging: inspect seals, liners and containers for damage, moisture ingress, contamination and powder leakage.

Condition: check colour, foreign matter and caking against the approved sample; retain a traceable sample and record discrepancies.

What goes wrong

A headline assay can conceal a different moisture basis or omit impurities important to your process. A generic certificate may not describe the delivered batch. Damaged liners, contamination or caking can make material difficult to dose even when the supplier’s assay appears acceptable.

Hold discrepant material separately while checking identity and analysis. Agree the sampling method, acceptance criteria and response to failed results before shipment. Use testing and certification support to arrange the checks your application needs.

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.