Patent ID: 9675076
Date: 2017-06-13
CPC Classifications: A01N,G01N,Y10T

Claim:
1. An equilibrium peracid composition comprising: a C 1 -C 22 peroxycarboxylic acid; a C hydrogen peroxide; and an aryl sulfonate fluorescent active compound, wherein the fluorescent active compound is stable in the equilibrium peracid composition for monitoring peroxycarboxylic acid concentration by an optical sensor, and provides a fluorescent emission equal to or greater than 0.01 SU in an aqueous solution and that is proportional to peroxycarboxylic acid concentration as measured by an optical sensor when the concentrated composition is diluted to from about 0.05 wt-% to about 0.25 wt-% in water, wherein the fluorescent active compound is sodium xylene sulfonate, toluene sulfonate, alkyl diphenyl oxide disulfonate, naphthalene sulfonate, alkyl naphthalene sulfonate, naphthalene disulfonate or sodium cumene sulfonate.