Showing papers on "Sodium chlorate published in 1994"

Corrosion inhibition of oxidant-based anti-microbial compositions

Abstract: Items such as medical instruments (which may include brass, copper, aluminium, stainless steel, carbon steel or plastic parts) are microbially decontaminated (sterilised or disinfected) in an antimicrobial solution containing at least one corrosion inhibitor from the class consisting essentially of: benzotriazoles, tolyltriazoles, mercaptobenzathiazoles azoles, benzoates (eg salicylates), molybdates, phosphates chromates, dichromates, tungstates, vanadates, borates and benzoyl alanines. Powdered or liquid reagents containing such a corrosion inhibitor(s) are selected such that they react in the presence of a dissolving liquid (eg water) to form a strong oxidant solution in an appropriate concentration to be effective as an anti-microbial. Such reagents are advantageously stable during storage and handling. The preferred reagents include acetylsalicylic acid and sodium perborate (which react in the presence of water to form a peracetic acid solution and, moreover, sodium metaborate and salicylic acid, both of which inhibit corrosion of metal parts in the medical instruments). Disodium phosphate and benzotriazole may also be added. Sodium chlorate and an acid activator may be used to generate chlorine dioxide.

Method for prodn. of sodium chlorate by enclosed circulation of non-evaporating mother liquor

Abstract: A method for producing sodium chlorate by electrolysis of table salt resides in that the electrolyzed liquid is put in sodium chloride thickener and NaCl content of industrial salt is concentrated up to 120-165g/l, then urea, caustic soda, sodium carbonate and barium chloride are added to remove hypochlorite, magnesium, calcium and sulphate radical, the concentrated liquid is fed into crystallization tank to separate out crystals, and the product is obtained thro. separating and drying. The mother liquid is entered into salt-dissolution tank to make saturated salt liquor for further electrolysis. The thickener is a new design having great effect and high efficiency. This enclosed circulating technology avoids treatment of six-valent Cr-ion and environmental pollution, lowers cost and raises product quality.

Electrolytic production of acid

Abstract: A salt solution, particularly aqueous sodium chlorate, is acidified electrolytically at a higher current efficiency than has previously been the case by employing a plurality of multiple compartment cells, in which the effluent from intermediate compartments is passed through more anodic compartments.

Extraction voltammetric determination of phosphorus

Abstract: The proposed method for the determination of phosphorus is based on the extraction of molybdophosphoric acid. A mixture of methyl-iso-butyl-ketone and cyclohexane is used as extractant. The addition of cyclohexane allows the separation from silicon. Sodium chlorate is used as oxidant and gives rise to a catalytic current. The voltammetric behaviour of molybdophosphoric acid is described, comparing the dropping mercury electrode and the glassy carbon electrode. The 3σ-detection limit is 2.3 · 10−8 mol P/l. The method was applied to water samples from the river Spree.