63 results about "Hypobromous acid" patented technology

Vehicle and method is disclosed for treating and/or preventing skin disorders such as acne vulgaris and which exfoliates healthy skin by a topical application. The vehicle is a formulation incorporating hypohalous acid in a suitable pharmaceutical compound. The topical application comprises administering and scrubbing a therapeutically effective amount of hypohalous acid in the vehicle. The hypohalous acid may be hypochlorous acid, hypobromous acid, or hypoiodious acid. The suitable pharmaceutical vehicles include water, solutions, cleansers, lotion, cream, paper facial masks, and gels. The scrubbing action on the skin is exerted by a mechanic tool, such as hand, cloth towel, sponge, brush, and spraying device. Methods of preparing and compounding the vehicle for topical application and of its use are also set forth.

The invention includes a method of preparing hypobromous acid by mixing an aqueous solution of hydrogen bromide and a source of hypochlorite with water. The invention also includes a method of using the hypobromous acid prepared by this method to wash animal carcasses, trim, and offal to reduce microorganisms, in particular, human pathogenic bacteria, on and in the carcasses, trim, or offal. Compositions of hypobromous acid are also described. The hypobromous acid of the invention may also be used to reduce fat, oil, and grease build-up on equipment and hard surfaces used in the processing of animal carcasses, trim, and offal.

The invention relates to the field of environmental purification and disinfectants, in particular to a chlorine dioxide solid releasing agent and a preparation method thereof.The chlorine dioxide solid releasing agent is prepared from the following raw materials in parts by weight:4-26 parts of chlorite,10-65 parts of a bromine-containing inorganic salt activator and 5-20 parts of a passivation stabilizer, wherein a tasteless bromine-containing inorganic compound is used for firstly forming hypobromous acid and then activating sodium chlorite under an acidic condition;hypobromous acid has stronger oxidizing ability than hypochlorous acid and does not produce chloroform, thereby quickly producing high purity and high yield of chlorine dioxide and being less affected by temperature and reaction time;no secondary pollution occurs during use. According to the preparation method of the chlorine dioxide solid releasing agent, chlorine odor is not produced during the production and preparation process, and the production environment and the health of workers are effectively protected;the bromine-containing compound formed during the activation process has higher oxidation performance thanchlorine-containing compound, so the use concentration is lower,the disinfection effect is better and the application range is wider.

The invention discloses a production process for controlling generation of ozonized bromate. A biological film reactor is used for removing ammonia nitrogen in water before ozone is in contact with a pool, sodium hypochlorite is added to water for reacting, bromide ions in water are oxidized into hypobromous acid through hypochlorous acid, then ammonium chloride is added to water, hypobromous acid and the ammonium ions react to generate ammonium bromide, most of bromide ions in water are converted into ammonium bromide to reduce the concentration of the bromide ions in water, ozone is added to water to react with water, and due to the fact that the concentration of the bromide ions is low, the generation amount of bromate is effectively restrained in the ozonization process. The process is simple, operation is convenient, generation of bromate can be effectively controlled in practical engineering production, and therefore the concentration of bromate in water is reduced.

A new eco-friendly process is described in the present invention for the preparation of bromobenzene through substitution of one of the C—H proton of benzene ring with a highly reactive hypobromous acid generated in situ, said process comprises the steps of activating a water soluble, easy to handle, brominating reagent with a mineral acid at elevated temperature and atmospheric pressure to generate active bromine species which in turn reacts with benzene.

The invention relates to an improved synthesis method for hydantoin bromo and for preparing dibromohydantoin or bromo-3-chloro-5,5-dimethylhydantoin. The method comprises the following steps of: taking various hydantoins as raw materials, dissolving the hydantoins and the corresponding amount of bromide in 0.2g/mL saturation chlorate solution, electrolyzing the bromide solution and obtaining the corresponding hypobromite, generating hypobromous acid under the condition of addition of acid, further performing bromo reaction to the hydantoin, adjusting the bromide equivalent according to demand and synthesizing the corresponding dibromohydantoin or bromo-3-chloro-5,5-dimethylhydantoin. Reaction liquid can be repeated and used, and the reaction yield can reach more than 95%. The invention has the advantages of easy obtainment of raw materials by low cost, low production cost, simple post treatment, high yield, good purity and repetitive recycle of the mother liquid. By utilizing the electrolysis process, the process is simple, and the equipment has low requirement, safe operation and no toxicity or stimulation.

The invention belongs to the field of fluorescent probes in analytical chemistry and relates to a ratiometric fluorescent probe compound for detecting hypobromous acid and application thereof. The synthetic method comprises the following steps: reacting 3-amino-4-bromo-1,8-naphthalic anhydride and 4-(2-amino ethyl) morpholine to produce an intermediate product II, and carrying out a coupled reaction between the compound II and 2-methylthiophenylboronic acid, thereby obtaining the probe molecule. The probe is excellent in stability and simple in preparation method, response on the hypobromous acid has the advantages of being ratiometric, high in selectivity, rapid and sensitive, and other activated small molecules, ions and amino acids do not produce interference to detection of the hypobromous acid. The probe provides a novel method for detecting the hypobromous acid, and has excellent application prospects.

The invention discloses a treatment method of degradation-resistant bromine-containing organic wastewater. The method comprises the following steps: adding bromine-containing organic wastewater into an electrolytic reactor; switching on the power supply connected to positive electrode and negative electrode of the electrolytic reactor, carrying out reactions for a while so that bromine ions in thewastewater are oxidized into bromine, and quickly carrying out reactions between bromine and water to generate strongly oxidative hypobromous acid. Hypobromous acid can oxidize and degrade refractoryorganic matters in the wastewater, so that COD of wastewater is reduced, and biodegradability of wastewater is improved. After the wastewater is treated by the method, refractory organic matters in the wastewater are greatly reduced, B/C is improved, the treated wastewater can independently enter a biochemical system or the treated wastewater can be mixed with other wastewater before entering a biochemical system.

The application describes synergistic microbicidal compositions comprising: 2,2-dibromomalonamide and an oxidizing biocide selected from the group consisting of: monochloramine, bromochlorodimethylhydantoin, hypobromite ion or hypobromous acid, hydrogen peroxide, dichloroisocyanurate, trichloroisocyanurate and chlorine dioxide and a method for controlling microorganism growth in an aqueous or water-containing system.

The invention relates to a quick, highly selective and ultra-sensitive hypobromous acid fluorescence probe. In particular, the probe is a 4-amino-1,8-naphthalimide compound and can serve as the hypobromous acid fluorescence probe for hypobromous acid detection. The probe can achieve at least one of the following technical effects that probe can highly selectively identify hypobromous acid, quicklyrespond to hypobromous acid, highly sensitively analyze hypobromous acid and achieve hypobromous acid analysis, is stable in property, can be stored and used for a long term, and has higher interference resistance.

The invention includes a method of preparing hypochlorite-activated solutions of hypobromous acid and/or hypobromite ion. The method includes the steps of mixing a solution of a source of bromide ion with a solution of a source of hypochlorite ion to activate the bromide ion, allowing sufficient time to maximize the activation of the bromide ion, and storing the solution before use. The invention also includes a method of using the solution to wash meat and poultry carcasses, trim, and offal to reduce pathogenic microorganisms. The solutions may also be used to reduce pathogenic microorganisms in industrial cooling water and on food contact hard surfaces and equipment. The solutions may be stored for up to about three hours before use and are stable for that period of time.

Provided is a method for producing a one-liquid stabilized hypobromous acid composition which contains substantially no bromate ions, has excellent sterilization performance, exhibits almost no corrosiveness relative to metals, and displays excellent storage stability. This method for producing the stabilized hypobromous acid composition includes a step in which a reaction is induced by adding, under an inert gas atmosphere, bromine to a mixed solution including water, an alkali hydroxide, and sulfamic acid, wherein the proportion of bromine added is not more than 25 wt % relative to the total weight of the composition.

Provided is a method for treating water containing cyanogen and ammonia with which cyanogen and ammonia are sufficiently decomposed even in cases where the concentration of soluble iron is high. This method for treating wastewater containing cyanogen and ammonia involves a step for oxidizing and decomposing cyanogen and ammonia by adding a chemical solution including hypobromous acid and/or hypochlorous acid to wastewater containing cyanogen and ammonia. A solution in which hypobromous acid and/or a hypobromite have/has been produced by mixing a bromide aqueous solution and a hypochlorite aqueous solution is added to wastewater containing cyanogen and ammonia. A sodium bromide aqueous solution and a sodium hypochlorite aqueous solution are mixed and added at an equimolar ratio or such that sodium hypochlorite is excessive.

The invention discloses a preparation method of a bromofluorescein type cosmetic dyestuff. Specifically, the dyestuff disclosed by the invention is prepared from 4',5'-dibromofluorescein (C.I.45370: 1) , 2',4',5',7'-tetrabromofluorescein (C.I.45380: 2), 2',4',5',7'-tetrabromo-4,7-dichlorofluorescein (C.I.45405: 1) and 2',4',5',7'-tetrabromo-4,5,6,7-tetrabromofluorescein (C.I.45410: 1). The preparation method comprises the following steps: (I) putting bromine into liquid alkali and a water solution of sodium hypochlorite at low temperature to prepare a sodium hypobromite solution; (II) dissolving fluorescein or corresponding chlorofluorescein or partially dissolving the fluorescein or the corresponding chlorofluorescein into an acid-containing solvent; dropwise adding the sodium hypobromitesolution at room temperature and carrying out bromination; (III) after reaching a bromination finishing point, adding a proper amount of a reducing agent to eliminate hypobromous acid if residual hypobromous acid exists; after removing a solvent, washing an obtained crude product with diluted hydrochloric acid and desalting; drying to obtain a target product.

The invention discloses a treatment method of degradation-resistant organic nitrogen wastewater. The method comprises the following steps: adding wastewater containing degradation-resistant organic nitrogen and bromine-containing wastewater into an electrolytic cell according to a certain ratio, carrying out an electrolytic reaction for a certain period of time, oxidizing bromide ions in the wastewater into bromine, rapidly reacting bromine with water to generate hypobromous acid with a very strong oxidizing performance, and oxidizing and degrading organic nitrogen in the wastewater by hypobromous acid. After being treated by the method, more than 90% of degradation-resistant organic nitrogen can be removed. According to the method, waste is treated with waste, the treatment cost is low, the pH application range is wide, and the method can be widely applied to treatment of various degradation-resistant organic nitrogen-containing wastewater.

The invention provides a method for controlling generation of bromate in an ozone/activated carbon advanced water-treatment process. The method comprises the following steps that available chlorine is added into a raw water body, and then the ozone/activated carbon advanced water-treatment process is conducted after bromide ions in the raw water body are converted into hypobromous acid. By adoption of the method for controlling generation of the bromate in the ozone/activated carbon advanced water-treatment process, the problems that the economical efficiency is poor and the treatment efficiency is low in the prior art are solved, the method has the characteristics of being low in cost, obvious in control effect, easy to operate and the like, and accordingly, the method is wide in application range and achieves application to practical production to a certain extent.

The invention provides a benzothiazole compound probe, which can be reacted with HBrO to generate a cyclo-sulfilimine bond, thus increasing the conjugation degree of the reaction system and making a red shift on the fluorescence intensity of the reaction system by 137 nm and a change on fluorescence intensity ratio by 234 times. The probe can selectively recognize the HBrO without interference byother active oxygen substances and metal ions. Besides, the probe has advantages of short responding time and high sensitivity for detecting the HBrO and can be used for measurement of content of theHBrO. In addition, by researching the influence of pH value on measurement of the HBrO by the fluorescent probe, the fluorescence intensity ratio (I580/I447) of a probe blank solution to a solution with addition of HBrO is hardly changed along with change of pH value in the range of pH 2.0-12.0, so that it is proved that the pH has no obvious influence on the fluorescence intensity ratio. Withoutaddition of HBrO to the probe, a cell has strong fluorescence of blue pathway and weak fluorescence of red pathway, and the fluorescence is hardly to be seen. After the HBrO is added, the cell has weakened fluorescence of the blue pathway and enhanced fluorescence of the red pathway.

The invention provides a method for controlling generation of bromate in a sulfate-radical-based advanced oxidation system and relates to a method for controlling bromate in water treatment. The problem that the sulfate-radical-based advanced oxidation system generates suspected cancerogen, namely bromate, and accordingly water quality safety risks are caused is solved. The method includes the step that ammonia is put into the sulfate-radical-based advanced oxidation system and stirred. Ammonia reacts with intermediate products, including hypobromous acid and bromine-containing radicals, of bromate in water, so that generation of intermediate products is inhibited, and control over bromate is achieved. The method has the advantages that the method can efficiently control generation of bromate, meets national domestic drinking water hygienic standard, does not influence oxidation capacity of the advanced oxidation system, is easy to operate and safe to use, does not change original treatment technologies, and is low in operation cost. The method can be used for the control over bormate in the treatment process of drinking water, underground water, sewage and industrial wastewater.

The invention provides a green method for catalyzing dithioacetal/ketone to be deprotected into a carbonyl compound, and belongs to the field of green organic synthesis. According to the method, a green solvent ethanol is taken as a reaction solvent, hypobromous acid generated in situ by a synergistic catalysis system H2O2-CeBr3 is taken as a direct oxidant under neutral, open and room-temperature conditions, and the dithioacetal/ketone compound is quickly oxidized into a corresponding carbonyl compound. The solvent ethanol used in the method is green and environment-friendly, the reagents H2O2 and CeBr3 are cheap and easy to obtain, the reaction cost is low, the method is mild and efficient, the substrate application range is wide, the product yield is high, operation is easy and convenient, application of dithioacetal/ketone protecting groups in modern organic synthesis is further expanded, and the method has wide application prospects.