Brazilian petrochemicals giant Braskem S.A. said Wednesday that Mexico’s Centro Nacional de Control del Gas Natural (Cenagas) has cut off natural gas transportation service for the Etileno XXI complex in Mexico’s Veracruz state.

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Cenagas is the state entity tasked with coordinating operations and allocating capacity on the Sistrangas natural gas pipeline network.

Etileno XXI, the largest petrochemical complex in Latin America, is owned by Braskem Idesa, a joint-venture between Braskem and Mexico’s Grupo Idesa.

Braskem said it received notification from Cenagas “related to the unilateral termination of the service of natural gas transportation, an essential energy input for the production of polyethylene” at the complex.

“As a result, in compliance with safety...