Abstract: The invention concerns a hygienic agent for use in hemodialysis. This hygienic agent based on peracetic acid has an aqueous solution containing 6 to 8 weight % hydrogen peroxide, 0.1 to 1 weight % peracetic acid and 2 to 10 weight % acetic acid. Application to the disinfection, sterilization of dialysis generators, dialyzers, hemofilters and hemodialyzers and circuits of water treatment for hemodialysis.

Abstract: The invention concerns a hygienic agent for use in hemodialysis. This hygienic agent based on peracetic acid has an aqueous solution containing 6 to 8 weight % hydrogen peroxide, 0.1 to 1 weight % peracetic acid and 2 to 10 weight % acetic acid. Application to the disinfection, sterilization of dialysis generators, dialyzers, hemofilters and hemodialyzers and circuits of water treatment for hemodialysis.

Abstract: Alkaline aqueous liquid bleaching detergents that remain stable during storage contain monohydrated sodium perborate, a Mg 3.5 SiO.sub.2 magnesium silicate, sodium acid pyrophosphate and a viscosity regulator composed of dialkylether polyethyleneglycol copolymers.The detergents can be used for washing and bleaching at temperatures between 40.degree. and 90.degree. C.

Abstract: Commercial solutions of noncorrosive and time-stable carboxylic peracids, particularly peracetic acid, contain an acid of oxidizing nature, such as nitric acid, present in a weight percentage at least equal to that of the carboxylic peracid. Such solutions, diluted with ordinary water, are useful for the sterilization and microbiological disinfection of asceptic enclosures, and of equipment of the food industry, particularly the milk industry, with reduced risk of corrosion to the equipment.

Abstract: Epoxidation of oil, such as soybean oil, using a peracid, is performed in the presence of a complexing agent for heavy metals selected from nitriloacetic, cyclohexane aminotetracetic and diethylenetriaminopentacetic acids.

Abstract: A apparatus for obtaining monoperoxy sulphuric acid from hydrogen peroxide and sulphuric acid is disclosed. Hydrogen peroxide in the form of an aqueous solution with a concentration ranging from 35 to 100 percent and either concentrated sulphuric acid or fuming sulphuric acid are added simultaneously to a reaction vessel. The temperature of the reaction is maintained in the range -10.degree.C to +80.degree.C and the supply of the hydrogen peroxide and sulphuric acid to the reaction vessel is controlled so that the generation of the monoperoxysulphuric acid occurs when required and the quantity thereof produced is adjusted according to the quantity thereof required for reaction with another reactant, for example a pollutant, the concentration of the monoperoxysulphuric acid being substantially constant.