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US 2017/0248522 A1Published application
Peroxycarboxylic acid compositions suitable for inline optical or conductivity monitoring
AssigneeEcolab USA Inc.
InventorsJunzhong Li, David D. McSherry, Allison Brewster, Richard Staub
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Abstract
Peracid stable fluorescent active compounds in highly acidic, equilibrium peroxycarboxylic acid sanitizing compositions are disclosed as having improved fluorescent stability allowing for monitoring of peroxycarboxylic acid concentration by conductivity and/or optical sensors. Beneficially, the compositions are also low odor and low/no VOC dual functioning acid wash and sanitizing compositions.
Claims20
An equilibrium peracid composition comprising:
- a C1-C22 peroxycarboxylic acid;
- a C1-C22 carboxylic acid;
- hydrogen peroxide;
- and
- an aryl sulfonate fluorescent active compound, 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;
- and wherein the fluorescent active compound is stable in the equilibrium peracid composition for monitoring peroxycarboxylic acid concentration by an optical sensor.
3 more elements
An equilibrium peracid composition comprising:
- a C1-C22 peroxycarboxylic acid;
- a C1-C22 carboxylic acid;
- hydrogen peroxide;
- an aryl sulfonate fluorescent active compound, 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;
- and wherein the fluorescent active compound is stable in the equilibrium peracid composition for monitoring peroxycarboxylic acid concentration by an optical sensor;
- a mineral acid;
- and
- a surfactant.
5 more elements
Dependencies are inferred from the claim text.