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

EOSIN B CERTIFIED
(C. I. 45400)

Synonyms:				Acid Red 91; 4’,5’-Dibromo-2’,7’-Dinitrofluorescein,
					Disodium Salt; Eosin Bluish; C.I. 45400

CAS No:				548-24-3

Chemical Formula:			C20H6N2O9Br2

Formula Weight:			624.08

Appearance:				Brownish-Green Powder

Lambda max:			514 (395) nm (in Water plus 1% Na2CO3)

Visual Transition Interval		pH 0.0 (colorless) to pH 2.4(fluorescent pink)

Dye Content:			85 % minimum

Effective: 01/20/09