Stabilized active halogen solutions

摘要

Disclosed are compositions for stabilizing a source of active halogen in aqueous solution. The compositions comprise (i) at least one substituted N-hydrogen compound, such as 5,5-dimethylhydantoin, and (ii) at least one additional nitrogen compound selected from ammonia, ammonium salts, and nitrogen compounds containing no carbon-hydrogen bonds, the molar ratio of (i) and (ii) being in the range of 50:1 to 0.02:1. Active halogen-containing aqueous solutions stabilized by the above compositions are particularly useful for controlling microbial and planktonic growth in aqueous systems such as process liquids in the pulping or papermaking industry. The compositions are also useful in reducing the corrosivity of halogen-containing solutions.

主权项

1. A composition for stabilizing a source of active halogen in aqueous solution for use in an industrial water process system, said composition comprising:
(i) at least one substituted N-hydrogen compound selected from the group consisting of p-toluenesulfonamide, 5,5-dialkylhydantoins, methanesulfon-amide, barbituric acid, 5-methyluracil, imidazoline, pyrrolidone, morpholine, acetanilide, acetamide, ΛAethylacetamide, phthalimide, benzamide, succin-imide, /V-methylolurea, ΛAmethylurea, acetylurea, methyl allophanate, methyl carbamate, phthalohydrazide, pyrrole, indole, formamide, /V-methyl-formamide, dicyanodiamide, ethyl carbamate, 1,3-dimethylbiuret, methyl-phenylbiuret, 4,4-dimethyl-2-oxazolidinone, 6-methyluracil, 2-imidazoli-dinone, ethyleneurea, 2-pyrimidone, azetidin-2-one, 2-pyrrolidone, capro-lactam, phenylsulfinimide, phenylsulfinimidylamide, diaryl- or dialkylsulfin-imides, isothiazoline-1,1-dioxide, hydantoin, glycine, piperidine, piperazine, ethanolamine, glycinamide, creatine, and glycoluril, and (ii) at least one additional nitrogen compound selected from the group consisting of ammonia, ammonium salts, and nitrogen compounds containing no carbon-hydrogen bonds,in a molar ratio of (i) to (ii) in the range of 50:1 to 0.02:1.