4-(Methylthio)phenol Chemical Properties Melting point 84-86(lit.) Boiling point 153-156 °C20 mm Hg(lit.) density 1.1182 (rough estimate) refractive index 1.5530 (estimate) Fp 153-156°C/20mm form Powder or Crystalline Powder pka 9.53(at 25℃) color White to pale brown