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

4-(p-NITROPHENYLAZO) RESORCINOL

Synonyms:			1,3-Benzenediol, 4-((4-Nitrophenyl)azo)-, p-Diazviolet, 					Magneson, Magneson 1, Azo Violet

CAS No:			74-39-5

Chemical Formula:		C12H9N3O4

Formula Weight:		259.22

Appearance:			Red to orange to Red-Orange Powder

Identification (IR):		Conforms to standard

Assay:				90% Minimum

Absorptivity 1%/ 1cm,	>1430
at λ max. 441.2 nm

Loss on drying:		<8%
at 110° C (1hr)

Solubility 0.1%		Almost Clear
(MeOH + 2ml 0.1N
NaOH)

Effective: 01/09/17