O le resini phenolic mautu e samasama, manino, amorphous mass mea, aua o loʻo i ai le phenol saoloto ma le mumu, o le averesi o le kalave faʻapitoa o le tino e tusa ma le 1.7, soluble i le ava malosi, e le mafai ona faʻaaogaina i le vai, mautu i le vai, vaivai vaivai, vaifofo vaivai. Resin faia i le phenol ma formaldehyde polycondensation, neutralization ma vai fufulu i lalo o tulaga catalyst. Ona o le eseese catalysts filifilia, e mafai ona vaevaeina i ni vaega se lua: thermosetting ma thermoplastic. Phenolic resin o loʻo i ai le malosi o le acid resistance, mea faʻainisinia ma le vevela, ma e faʻaaogaina lautele i le faʻainisinia faʻamaʻi, faʻapipiʻi, mea e faʻafefe ai le afi, faʻafefiloi uili gaosiga ma isi pisinisi.