Like commodity chemicals, petrochemicals are made on a very large scale. Petrochemical manufacturing units differ from commodity chemical plants in that they often produce a number of related products. Compare this with specialty chemical and fine chemical manufacture where products are made in discrete batch processes.
lIkE CommOdIty ChemICals, petRochemiCaLs arE madE oN a veRy Large sCAle. petrOCHEmiCAL maNuFactUring uNiTs dIFfER From CoMmoDIty ChemicAL plaNts iN ThaT They ofteN produce a nuMBer of RElaTeD pRoDucts. compAre thIS with sPecIalty cHeMiCAL anD fiNe ChemICAL MANufaCtuRe where producTs are made In DiScrete BaTch PrOCesSes.