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

CHROMOTROPE FB

Synonyms:				Disodium 2-(4-sulfo-1-naphthylazo)-1-naphthol-4-sulfonate.

CAS No:				3567-69-9

Chemical Formula:			C20H12N2Na2O7S2

Formula Weight:			502.43

Appearance:				Dark Red to Brown to Black powder

Infrared Spectrum:			Conforms to Structure 

UV-Visible Spectrum:		0.03 G/L, H2O
					E(516 +/- 3NM) = >14,500
					E(323 +/- 3NM) = >9,000
					E(217 +/- 3NM) = >33,000

Effective: 02/19/10