Location: GLO - Global
The multioutput-process "naphta, to melecular sieve separations" delivers the co-products hexane, heptane, 2,3-dimethylbutane, 2-methylpentane, methylcyclopentane, 1,1-dimethylcyclopentane, methylcyclohexane, fraction 1 from naphta, fraction 7 from naphta, and fraction 8 from naphta. The allocation is based on mass balance.
Undefined unit processes (UPRs) are the unlinked, multi-product activity datasets that form the basis for all of the system models available in the ecoinvent database. This is the way the datasets are obtained and entered into the database by the data providers. These activity datasets are useful for investigating the environmental impacts of a specific activity (gate-to-gate), without regard to its upstream or downstream impacts.