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

PYROCATECHOL VIOLET

Synonyms:				Pyrocatechol Sulfonphthalein; 1,2-Benzenediol
    
CAS No:					115-41-3

Chemical Formula:				C19H14O7S

F.W.:						386.38

Appearance:					Dark Green Powder

Identification (IR):				To conform to standard

Assay:						80%  Minimum					
(Titration w/ NaOH)

Solubility:					Red to brown solution
(10mg plus 10ml of water)

Suitability as Indicator for
   Complexometry:				To pass test

Effective: 02/01/13