S P E C I F I C A T I O N S

BROMOPHENOL BLUE SODIUM SALT ACS

Synonyms:					3',3",5',5"-Tetrabromophenolsulfon-
phthalein, sodium salt

CAS No:					62625-28-9

Chemical Formula:				C19H9Br4NaO5S			

Formula Weight:				691.97

Description:					Yellow brown powder

Loss on drying at 110 Deg. C
(1 hour):					< 5.0%

Clarity of solution:				To pass test

Visual transition
interval:					From pH 3.0 (yellow) to pH 4.6 (blue)

Absorptivity 1%/1cm
(pH 3.0) at Lambda max 436 nm:		320-370
(pH 4.6) at Lambda max 591 nm:		880-950

Effective Date:  02/04/09