1.phthalic Anhydride bụ otu n'ime kemịkal kemịkal dị mkpa nke ahịhịa, bụ esterl ya na Esterl Aster, ma enwere ike iji ya plastizer maka PVC, wdg.
A na-ejikwa ya na mmepụta nke polynester resin, Alkyd resin, na-agbanye na ụyọkọ, ọtụtụ ihe osise, ihe mgbakwunye nri, wdg.
