CN code 293369 covers other heterocyclic compounds containing an unfused triazine ring not falling within subheading 293361 (melamine). Principal substances classified here include atrazine (CAS 1912-24-9), cyanuric chloride (cyanuryl chloride, CAS 108-77-0), and other triazine-based active substances or synthesis intermediates in chemically pure form. Melamine (2,4,6-triamino-1,3,5-triazine, CAS 108-78-1) has its own subheading, CN 293361, and should be declared there rather than under CN 293369. Atrazine was widely used as a herbicide but has been prohibited as a plant protection product in the EU since 2004 under Regulation (EC) No 1107/2009; it remains the subject of trade for export to third countries and for research use. Cyanuric chloride is a highly reactive triazine derivative used as a key building block in the synthesis of reactive dyes, herbicides, pharmaceuticals and UV stabilisers. Classification to CN 293369 requires a chemically defined compound in accordance with Note 1 to Chapter 29.

Substances under CN 293369 are subject to REACH Regulation (EC) No 1907/2006. Atrazine is listed as a priority hazardous substance under EU water policy (Directive 2013/39/EU) and is prohibited as a plant protection product in the EU; import is possible only for research purposes, export to third countries or for use as a chemical synthesis intermediate, subject to REACH registration and applicable conditions. Cyanuric chloride is classified as a corrosive, highly reactive substance that releases hydrogen chloride on contact with moisture; CLP labelling must include hazard pictograms GHS05 (corrosion) and GHS07 or GHS06 as appropriate, with H314, H318 and relevant P-statements. The Safety Data Sheet (SDS) must be prepared in the official language of the destination member state pursuant to Regulation (EU) 2020/878. Melamine used in food-contact applications is regulated by Regulation (EC) No 10/2011 and Regulation (EC) No 1935/2004 with a specific migration limit (SML) of 15 mg/kg.

The customs declaration for goods under CN 293369 must include the IUPAC name, CAS number, degree of chemical purity, and the REACH registration number or Only Representative reference. For atrazine destined for re-export outside the EU, documentation confirming the intended use must accompany the consignment; transit through EU territory is subject to ADR transport rules. Cyanuric chloride is subject to ADR Class 8 (corrosive substances) transport requirements and must be packaged in accordance with the relevant UN packing group. Export of triazine derivatives - particularly plant protection active substances - to third countries may require prior authorisation or notification under Regulation (EU) No 649/2012 on the prior informed consent (PIC) procedure for export and import of hazardous chemicals. Current MFN duty rates, anti-dumping measures and tariff preferences for CN 293369 should be verified in the TARIC database of the European Commission before each transaction.

Organic substances under CN code 2933 69 (Compounds with triazine ring) require detailed chemical documentation for customs clearance. The Safety Data Sheet must comply with REACH Annex II. Substances classified as hazardous under CLP require GHS pictogram labelling. Transport follows ADR (road) or IMDG (maritime) regulations. Some organic substances may be subject to export controls as dual-use goods. Importers should verify whether the substance requires REACH authorisation (Annex XIV) or is subject to restrictions (Annex XVII).