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

REACTIVE RED 4

Synonyms:				C.I. 18105; Procion Brilliant Red H-7B;
Cibacron Brilliant Red 3B-A

CAS No.:				17681-50-4

Formula:				C32H24CIN8Na4O14S4

Formula Weight:			995.23

Appearance:				Dark Red to Maroon-purple to Burgundy powder.

Identification (IR):			Conforms to Standard

Dye Content: 			Minimum 50%
(Assay by Nitrogen)

Extinction Coefficient:		> 14000
278-284 nm

Solubility:				Clear pink to dark red solution
 1 mg/ml, H2O

Effective: 07/01/15