Keywords: Phenol-red-mid-pH-3D-balls.png Ball-and-stick model of the phenol red molecule a pH indicator as it appears in a neutral to mildly acidic solution having a yellow color Derived from File Phenol-red-zwitterionic-form-3D-balls png 2010-08-28 Jynto and Ben Mills Phenol red Ball-and-stick models Images by Jynto |