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

RESAZURIN SODIUM SALT CERTIFIED

Synonyms:				Alamar Blue; 7-Hydroxy-3H-phenoxazin-
3-one-10-oxide, sodium salt

CAS No:				62758-13-8

Chemical Formula:			C12H6NNaO4

F.W.:					251.18

Appearance:				Dark green to black Powder

Identification (IR):			To conform to standard

Dye content:				> 80%

Lambda Max:			598(380)nm in water

pH (0.1 mg/ml H2O)		8.75 - 10.0	

Solubility 0.1% H2O:		Dark bluish purple. 
					Insoluble in ether, slightly soluble in alcohol and
					 acetic acid.

Visual transition Interval:		From pH 3.5 (orange) 
To     pH 6.5 (bluish-violet)

Effective: 08/30/12