Bromophenol Red sodium salt, cas registry number of 102185-50-2, is also called 5',5''-Dibromophenolsulfonphthalein sodium salt . According to its structure, the system name is named as Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[2-bromo-,monosodium salt . This compound is an irritant substance which irritates to eyes, respiratory system and skin. When use it, remember wear suitable protective clothing. Bromophenol Red sodium salt is also harmful by inhalation, in contact with skin and if swallowed. If contact with eyes, do not panic. Rinse immediately with plenty of water and seek medical advice.

  Bromophenol Red sodium salt is offered by suppliers for example, Suzhou Sinoera Chem Co., Ltd. and The Lab Depot, Inc. with different package specifications like 5 g and 1 g in different prices. The colour of this compound will change. When it is in solution of pH 5.2, it shows yellow. When the pH turns to 6.8, the colour will show red. So the pH changes from 5.2 to 6.8, the colour will gradually chang from yellow to red.