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Each feedstock provides a different number of co-products when cracked Feedstocks Co-Products Yield when producing 1 unit of ethylene via several feedstocks Benzene 0.2 0.2 Butadiene 0.3 1.0 1.0 0.1 Products 0.5 0.2 (ton) 1.0 1.0 1.0 0.4 1.0 Propylene 1.0 Ethylene -1.3 Feedstock -2.4 -3.5 -5.9 -9.8 Feedstock Consumption (ton) Coal Methanol Naphtha Propane Feedstocks on Crackers Ethane The composition of the products depends crucially on the feedstock used. Heavier feedstocks will produce more products than lighter feedstocks on crackers Source: External Consultants PUBLIC Braskem 21

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