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

4',5'-DIBROMOFLUORESCEIN

Synonyms:					Solvent Red 72; C.I. 45370:1

CAS No:					596-03-2

Chemical Formula:				C20H10Br2O5
  
Formula Weight:				490.12

Description:					Orange powder

Identification:				Conforms to structure and standard

Dye content:					~95%

Melting Point:				270-275 Deg. C (lit.)

Lambda max.:				450nm in methanol

Loss on drying @100 deg.C:		5.0% maximum

Solubility
10 mg/ml, 0.5N NH4OH (heat):		Clear yellow to slightly dark
						Orange solution					

Effective: 01/26/09