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

BRILLIANT YELLOW

Synonyms:				Direct Yellow 4; C.I. 24890

CAS No:				3051-11-4

Chemical Formula:			C26H18N4Na2O8S2

Formula Weight:			624.55

Appearance:				Brick red to rust colored powder

Dye content:				~85%

Visual Transition Interval:	From pH 6.4  (yellow)
To     pH 8.0  (red-orange)

Solubility:				Soluble in water (2.5 gm/100 ml; slightly soluble in acetone and cellosolve.

Effective: 02/04/09