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

NITROSO-R-SALT

Synonyms:				Nitro-R-Salt; 2,7-Naphthalenedisulfonic Acid

CAS No:				525-05-03

Chemical Formula:			HOC10H4(NO)(SO3Na)2

Formula Weight:			377.25

Description:				Yellow to Yellow Orange crystalline powder

Assay:					90.0 % minimum

Loss on drying
(at 110 Deg. C/1hr:			5.0 % maximum

Suitable for determination	
of Cobalt:				To Pass Test

Solubility 0.1%
(0.1N NaOH):			Clear yellow solution

Effective: 01/05/09