BROMOTHYMOL BLUE SODIUM SALT Grade:ACS GRADE CAS Number: 34722-90-2Synonym(s): 3,3'-DIBROMOTHYMOLSULFONPHTHALEIN SODIUM SALT Molecular Weight: 646.38Molecular Formula: C27H27Br2O5S.Na Storage Condition: ROOM TEMPERATURE CodeSizePriceQuantity 0554-25G 0554-50G 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