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

1-(2-PYRIDYLAZO)-2-NAPHTHOL ACS
(P.A.N.)

Synonyms:				PAN; Nickel Indictor; 2-Naphthalenol, 1-(2-							pyridinylazo)-

CAS No:				85-85-8

Chemical Formula:			C15H11N3O

Formula Weight:			249.27

Description:				Orange to Orange-red to Red to 
					Brown crystalline powder

Identification (IR):			To pass test

Loss on drying at 110 °C/1hr:	<5.0%

Assay:					98.0 % minimum

Melting Point			128 - 141 °C

Sulfated Ash:			0.3 % maximum

Suitability as a complexo-
 metric indicator:			To pass test

Effective: 02/07/11