NILE CHEMICALS

BROMO PHENOL BLUE

SPECIFICATION SHEET

CAS No. 115 - 39 - 9
Chemical Formula C19H10Br4O5S
Molecular Weight 669.98
Melting Point 272 - 273 c
Dye Content ~95%
Transition Range pH 3.0 - 4.6
Greenish Yellow - Reddish Blue
Absorption Max (pH3.0) 434 - 439 nm
Absorption Max (pH4.6) 590 - 593 nm
Absorptivity (1%,1cm) pH 3.0 350 - 385
Absorptivity (1%,1cm) pH 4.6 940 - 1000
Loss On Drying (110 c) <1%
 

Also Available Bromophenol Blue Sodium Salt Cas no 62625-28-9

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