Specification Product Name XYLENE CYANOLE FF CAS NO. 4463-44-9 C.I. NO. 43535 Molecular Formula C25H27N2NaO7S2 Formula Weight 554.61 Appearance Dark blue to dark green powder Structure     Tests    Limits 1% Soln. in Water - Dark Blue clear solution Dye Content - 78.80% pH of 1% Soln. in Neutral Water - 5.7         REVISED: 1-1-2012