BROMOTHYMOL BLUE Grade:ACS GRADE CAS Number: 76-59-5Synonym(s): 3,3'-DIBROMOTHYMOLSULFONPHTHALEIN Molecular Weight: 624.38Molecular Formula: C27H28Br2O5S Storage Condition: ROOM TEMPERATURE CodeSizePriceQuantity 0431-25G 0431-50G A pH indicator (Yellow to Blue; range 6.0 – 7.6). Used to trace movement of fluids from the lymph and also for demonstration of fungal hyphae within plant roots. Color Index: N/A