CDS Chemical CUS Code

The CUS number is the identification number assigned to chemical products in the European Customs Inventory of Chemical Substances (ECICS) database.

This field is clearly marked in the items section of the customs declaration for both imports and exports:

You should refer to the tariff DE 6/13 to ensure that you are correctly and compliantly using these codes.

Useful links:

https://www.gov.uk/government/publications/cds-uk-trade-tariff-volume-3-import-declaration-completion-guide/group-6-goods-identification#data-element-6-13

https://www.gov.uk/government/publications/uk-trade-tariff-cds-volume-3-export-declaration-completion-guide/group-6-goods-identification#de-613-cus-code-for-chemicals-box-31-packages-and-description-of-goods

https://taxation-customs.ec.europa.eu/online-services/online-services-and-databases-customs/ecics-european-customs-inventory-chemical-substances_en