Petroleum Refinery Engineering
Iso-octane is used as a reference substance in the definition of octane number and it is assigned an octane number value of 100. Iso-octance is chemically known as

α-methyl naphthalene
2-2-4 tri methyl pentane
1, 3 butadiene
Tetra methyl ethylene

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Petroleum Refinery Engineering
Polymerisation

Produces i-octane from cracked gases containing i-butane and butene
Is aimed at producing lubricating oil
Causes aromatics to combine with each other
Causes olefins to combine with each other

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