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

CHROMOTROPE 2R

Synonyms:				Acid Red 29, C.I. 16570
Mordant Blue 80

CAS No:				4197-07-3

Chemical Formula:			C16H10N2Na2O8S2

Formula Weight:			468.37

Description:				Brownish-red powder

Assay:					>75%

Absorptivity 1%/1cm, (in 		>485
Methanol) at λ max. 511.6 nm

Loss on drying:			< 10%

Solubility:				Clear red solution
0.1% in water

Effective: 01/20/15