Ortho-Xylene (OX) Purity ≥98.5%: Primary Feedstock for Phthalic Anhydride
Ortho-Xylene (OX) purity ≥98.5% is the primary feedstock for phthalic anhydride in gas-phase fixed-bed oxidation plants. The 98.5 wt% minimum is operationally significant because it bounds the sum of meta-xylene, para-xylene, ethylbenzene, cumene, and non-aromatic C8–C9 hydrocarbons entering the catalytic oxidation loop. In vanadium pentoxide–titania catalyst beds, these co-fed impurities...
