Phenol Red

Phenol redPhenolsulfonphthaleinMOLECULAR BIOLOGY GRADEC19H14O5SMW: 354.380 g/molBright red powderForms a yellow to red or orange and clear to slightly turbid (traces of insoluble matter possible) solution when dissolved 0.1% in ethanol.Transition of pH indicator: 6.8 - 8.2 yellow to red. Used in selective microbial culture media to detect lactose- or sucrose-fermenting bacteria.Protect from light.