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

PYROGALLOL RED

Synonyms:					Pyrogallolsulfonephthalein

CAS No:					32638-88-3      

Formula:					C19H12O8S

F.W.:						400.37

Appearance:					Dark red to dark green to brown or black powder

Identification (IR):				Conforms to standard

Melting Point:				> 300˚ C

Lambda Max:				480 (282) nm in Ethanol

Sulfated Ash:				0.5% maximum

Suitable as Metal Indicator:		To pass test

Solubility:					H2O  		1 mg/ml
EGME	3 mg/ml
EtOH		4 mg/ml

Effective: 12/27/10