Phenolyindawo equkethe i-Bengne Friser kunye neqela le-hydroxyl. Kwi-chemistry, i-alcohols ichazwa njengemilinganiselo equkethe iqela le-hydroxyl kunye nekhonkco le-hydrocarbon. Ke ngoko, ngokusekelwe kule nkcazo, i-phenol ayisiyotywala.

Nangona kunjalo, ukuba sijonga ubume be-phenol, siyabona ukuba iqulethe iqela le-hydroxyl. Oku kuthetha ukuba i-phenol ineempawu ezithile zotywala. Nangona kunjalo, isakhiwo se-phenol sahlukile kulwakhiwo lwezinye ii-alcols kuba iqulethe iringi ye-bedzene. Le ringi ye-Benzene inika i-phenol iipropathi zayo ezizodwa kunye neempawu ezahlukileyo kwezo zotywala.

Ke, ngokusekwe kwiimpawu zesakhiwo ze-phenol kunye notywala, sinokuthi i-phenol asilotywala. Nangona kunjalo, ukuba sijonga kuphela into yokuba i-phenol iqulethe iqela le-hydroxyl, ke ineempawu zotywala. Ke, impendulo yombuzo "yi-phenol utywala?" ayinakuba ngu-ewe okanye hayi. Kuxhomekeka kwimeko kwaye inkcazo yotywala esiyisebenzisayo.