Sourcing rubber anti-scorch blends from China
Prepared rubber anti-scorch blends confirmed within heading 3812 pay 0% UK duty from China across all supplied lines. Confirm the formulation and tariff classification; mixtures placed on the Great Britain market must be classified and labelled under its chemical rules. Cambridge China Bridge sources prepared rubber anti-scorch blends.
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0% duty, with classification to confirm
Read from the UK Trade Tariff on 1 October 2026, heading 3812 covers prepared rubber accelerators, compound plasticisers and anti-oxidising preparations or other compound stabilisers for rubber or plastics. Every supplied line carries 0% duty for goods from China. The supplied records show no anti-dumping or countervailing duty, suspension or attached import control.
The supplied tariff descriptions do not name anti-scorch blends separately. The table includes other compound stabilisers and neighbouring accelerator and antioxidant lines for comparison. These are different functions, so do not assign an anti-scorch blend a code from its trade name alone. This guide concerns preparations, rather than a single chemically defined substance.
Give your customs broker the complete composition, carrier and intended function to confirm the commodity code. Use the prepared rubber accelerator blends guide for the wider heading. The illustrative order assumes that classification under the other compound stabiliser line has been confirmed.
| Goods | Commodity code | Duty | Anti-dumping or countervailing duty on China |
|---|---|---|---|
| Other compound stabilisers for rubber or plastics | 3812 39 90 90 | 0% | None |
| Other prepared rubber accelerators | 3812 10 00 90 | 0% | None |
| Anti-oxidising preparations | 3812 39 10 00 | 0% | None |
| Trimethyl dihydroquinoline oligomer mixtures | 3812 31 00 00 | 0% | None |
Specify the anti-scorch formulation and trial
Specify the active chemical identity, active content, carrier, powder or granule form, moisture, particle distribution and acceptable contamination. Agree whether the factory may change the carrier or raw-material source. Use your current approved grade as the comparison sample.
Agree a trial in your own rubber compound, using the same mixing sequence and cure conditions for both samples. Compare scorch behaviour, dispersion, cure curve and finished properties. Set acceptance criteria before approving the production batch.
Substances and mixtures placed on the Great Britain market must be classified and labelled under its classification, labelling and packaging rules. Classification applies regardless of quantity. UK REACH registration is per substance and per legal entity; assess the constituents individually. Confirm with HSE how your annual import quantities affect any UK REACH registration requirements.
Worked duty example
Illustrative example, not a quote: Illustrative order: one tonne of prepared rubber anti-scorch blend, assuming classification as an other compound stabiliser is confirmed under 3812 39 90 90, invoiced at £3,000 free on board, with £1,600 of freight and insurance to the UK. The customs value is £4,600. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £4,600, so it is £920. 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: compare the batch analysis, active content and carrier declaration with the approved specification and retained sample.
Condition: inspect for caking, moisture, excessive dust, uneven granules and foreign material; check dispersion in your compound.
Performance: compare scorch behaviour and the cure curve with the approved grade, then check the finished compound against agreed properties.
Packing and documents: check seals, batch identification and label consistency with the actual formulation. Obtain an English safety data sheet and retain batch samples. Plan checks through our quality inspection guide.
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What goes wrong
A matching trade name can hide a different active content or carrier. That makes a comparison by bag weight unreliable. Caked material or poor dispersion can also give uneven results. Approve the formulation and the batch trial together.
An anti-scorch product can be confused with an accelerator or antioxidant when ordering or declaring it. Keep the composition, technical specification and approved trial linked to the batch. Resolve substitutions before shipment, rather than adjusting your rubber recipe after arrival.
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 anti-scorch blends from China?
Blends confirmed within heading 3812 carry 0% duty on every supplied line. The supplied records show no anti-dumping or countervailing duty. Confirm the formulation and commodity code first.
Which commodity code covers my anti-scorch blend?
The supplied descriptions do not name anti-scorch blends separately. Ask your broker to assess the full composition, carrier and function. Do not choose an accelerator or stabiliser code from the trade name alone.
Does a small trial order avoid chemical classification?
No. Chemical classification applies regardless of the quantity supplied. Mixtures placed on the Great Britain market must be classified and labelled under its classification, labelling and packaging rules.
How do I approve a replacement anti-scorch blend?
Compare active content and carrier, then trial it against your approved grade in the same rubber compound. Check scorch behaviour, dispersion, the cure curve and finished properties before approving the batch.