Sourcing guanidine nitrate from China

Guanidine nitrate 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 lists 2925 29 00 90 for other imine compounds and their salts at 0% duty from China, with no anti-dumping or countervailing measure and no suspension listed. It does not name guanidine nitrate separately, so treat this as a candidate classification.

The UK Trade Tariff attaches veterinary control to this line. Its application to the proposed guanidine nitrate shipment has not been established: the importer should confirm the requirement with their customs broker. The record also attaches export controls on dangerous chemicals and waste. Ask the broker to review their relevance if goods will subsequently be exported or returned.

Confirm the commodity code using the substance identity, composition and intended presentation. Only the residual line is relevant to this focused table; the supplied facts contain no separate guanidine nitrate grades. For related sourcing considerations within the wider heading, see guanidine carbonate.

Specify the nitrate salt and batch quality

Write guanidine nitrate explicitly in the purchase specification. Agree the identity test, assay method, moisture limit, insoluble matter, particle-size distribution and acceptable impurities with your laboratory and process team. Make acceptance depend on the agreed methods rather than a supplier's unexplained purity statement.

Request a batch certificate of analysis and the safety data sheet before approving shipment. Agree packaging, liner compatibility, closure and handling arrangements against the documented hazards. HSE states that hazardous chemicals supplied for workplace use require a safety data sheet.

Before a first import, consider whether UK REACH registration is required. HSE also states that everyone in the supply chain is responsible for correct labelling and packaging before chemicals are placed on the market. Use testing and certification support to define the evidence needed for your order.

Worked duty example

Illustrative example, not a quote: Illustrative order: 1 tonne of guanidine nitrate, subject to classification confirmation under 2925 29 00 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 substance name and batch reference across the certificate, safety data sheet, labels and order.

Analysis: compare assay, moisture, insoluble matter and particle-size results with the agreed specification; arrange independent verification where needed.

Packaging: inspect closures, liners and outer packaging for leakage, tears, moisture damage and contamination.

Traceability: match delivered packages to the tested batch and retain a documented sample using an agreed safe sampling procedure.

What goes wrong

An order described only as guanidine can leave the salt identity unclear. A generic certificate may omit moisture or particle-size results that matter to the buyer's process. Treat these as acceptance risks: resolve the identity and test methods before approving production.

At arrival, investigate caking, damaged liners, inconsistent batch labels or unexplained differences from the approved sample. Hold affected stock for assessment rather than blending it into accepted material. A certificate from a different batch does not demonstrate conformity of the delivered goods.

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.