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

NITRAZINE YELLOW

Synonyms:					2-(2,4-Dinitrophenylazo)-1-hydroxy-
						naphthalene-3,6-disulfonic acid disodium salt;  C.I. 14890; Nitrazol Yellow.

CAS No:					5423-07-4

Formula:					C16H8N4Na2O11S2

F.W.:						542.36

Description:					Brown to Red-Brown to Yellow to Orange powder

Identification:				Conforms to structure and standard

Dye content:					85% minimum

Lambda Max.:				586-591nm 
C= 0.1g/l : 0.1N sodium hydroxide

Visual Transition Interval:		From pH 6.0 (bright yellow)
						To     pH 7.2 (bright blue)

Solubility:					Clear, yellow-brown to red-brown to
1 mg/ml in H2O				brown solution

Effective: 01/10/18